Is a limited company always better than an umbrella for a contractor?

No. For genuinely inside-IR35 work, an umbrella is often simpler and more economical because you avoid PSC running costs, accountancy fees, and the administrative burden of operating PAYE yourself. A limited company makes sense where you hold outside-IR35 work, want to retain profits for reinvestment, or plan significant pensions contributions. The right choice depends on your IR35 status and your work mix, not the structure alone.

What is the April 2026 umbrella reform and does it affect me?

From 6 April 2026, the recruitment agency that contracts with your end client (or the client itself where there is no agency) becomes jointly and severally liable with the umbrella for any PAYE and National Insurance the umbrella fails to remit. The umbrella stays your legal employer, but this reform tightens compliance. It means agencies and end clients will scrutinise which umbrellas they use more carefully, so you should use a transparently compliant umbrella (FCSA or Professional Passport accredited, clear Key Information Document, no inflated "expenses").

What does "inside IR35" and "outside IR35" mean for choosing between umbrella and limited company?

Inside IR35 means HMRC treats you as an employee in substance, so you pay employment tax even if formally self-employed. Under Chapter 10 (medium/large clients), the client issues a Status Determination Statement; under Chapter 8 (small clients), you assess yourself. For inside work, an umbrella is usually cheaper because you avoid PSC running costs. Outside IR35, you get to extract profit as dividends and claim the tax-efficient salary/dividend split, which favours a limited company.

How much does it cost to run a limited company versus an umbrella?

A limited company carries annual accountancy and compliance costs (statutory accounts, CT600, Self Assessment); market quotes commonly fall in the GBP 800 to GBP 2,000 range, but figures vary widely by provider and complexity, so treat that as a rough guide. An umbrella costs nothing directly to you (the umbrella margin is deducted from your assignment rate before you are paid). The umbrella's margin (a fixed weekly or monthly fee, or a small percentage of the rate, depending on the provider) plus legitimate deductions for employer National Insurance and the Apprenticeship Levy comes out of your take-home, whereas a PSC's accountancy costs come from taxable company profit.

Can I switch between an umbrella and a limited company mid-year?

Switching is administratively possible but should be planned carefully with your accountant. Moving from a limited company to an umbrella requires you to shut the PSC and close PAYE, both triggered by Your Tax Advisor. Moving from an umbrella to a PSC requires setting up the company, registering for PAYE, and switching clients (if they permit). The IR35 status of the engagement does not change when you switch structure, so timing matters less than ensuring the new structure is genuinely the right fit.

What happens to my salary and dividends if I go inside-IR35 and move to an umbrella?

When you move to an umbrella, you cease extracting profit as salary and dividends. Instead, the umbrella pays you a fixed assignment rate less deductions (employer National Insurance 15%, the Apprenticeship Levy, and the umbrella's margin). You receive a single net salary from the umbrella. The umbrella must give you a Key Information Document before you start, showing the rate and expected take-home. Importantly, you are entitled to holiday pay, which must be paid and not unlawfully retained.

Can I run a limited company and an umbrella at the same time?

Yes. A common pattern is to hold a PSC for outside-IR35 work and inside-IR35 assignments via an umbrella. This lets you extract outside-IR35 work as salary/dividends in the PSC, while the umbrella handles the simpler administrative route for inside work. However, you must be clear with your clients which structure you are using for each engagement and ensure your contracts and IR35 status align.

What is the 5 percent allowance and why does it disappear for inside-IR35 work?

Under Chapter 8 (where small clients apply), if you run a PSC and are inside IR35, you get to deduct a flat 5 percent of your engagement income as an administrative expenses allowance. This goes some way toward covering accountancy and compliance. Under Chapter 10 (medium/large clients), this 5 percent allowance does not exist. So one real cost difference between Chapter 8 and Chapter 10 is that the 5 percent relief disappears.

Is an umbrella treated as an employee or self-employed for tax?

An umbrella company is your legal employer, so you are treated as an employee. The umbrella operates PAYE and National Insurance on your behalf from your assignment rate. However, you are not an employee of the end client (the client may issue a Status Determination Statement saying you are inside IR35, but that does not change your employment status with the umbrella itself). For tax and National Insurance purposes, umbrella work is employment income.

What is the take-home difference between an umbrella and a limited company for inside-IR35 work?

For a genuinely inside-IR35 engagement at the same assignment rate, an umbrella usually gives a better take-home because you avoid PSC running costs and the double-layer PAYE admin. In a PSC, fixed accountancy and compliance costs eat a larger share of a modest inside-IR35 income, whereas an umbrella's only cost on top of the statutory deductions (employer National Insurance and the Apprenticeship Levy, both funded from the assignment rate) is its own margin. Because that margin is typically a small fixed fee rather than a fixed annual accountancy bill, the umbrella often comes out ahead on inside-IR35 work. The gap narrows if you hold multiple assignments (spreading accountancy costs) or if you plan significant pensions contributions via the PSC.

What tax and compliance obligations do I have on an umbrella assignment?

When you work via an umbrella, the umbrella is responsible for PAYE and National Insurance. You must provide the umbrella with your bank details and a valid right-to-work document (passport, visa, settled status) before starting. You will receive payslips and an end-of-year P60. For tax, the umbrella's PAYE deductions flow to HMRC, and you typically do not need to file a Self Assessment return unless you have other income. The umbrella (as your employer) is responsible for compliance, which is why choosing a compliant umbrella matters, especially after the April 2026 reform.

Should I plan for National Insurance when comparing umbrella and limited company costs?

Yes. If you work via an umbrella, employer National Insurance (15 percent on earnings above the GBP 5,000 per year secondary threshold) is deducted from your assignment rate before you are paid. If you run a PSC, you pay employer National Insurance on your salary (same 15 percent), and then you can extract profit as dividends with no National Insurance. For inside-IR35 work in both structures, National Insurance costs are roughly the same; the difference is that the umbrella deducts it upfront, while a PSC lets you manage the timing. For outside-IR35 work, the PSC advantage is that you pay National Insurance only on the salary you take, not on the full profit you extract as dividends.

Umbrella vs limited company: choose right for your contract

Contractor Tax Accountants Editorial Team

Figures checked against primary sources (HMRC, legislation.gov.uk, HMRC IR35 guidance) in 12 June 2026.

Key takeaways

Inside-IR35 engagements are often simpler and more economical via an umbrella because you avoid PSC running costs and double-layer PAYE.
Outside-IR35 work, retained profits, or pensions as a major lever favour a limited company for the tax efficiency it delivers.
A mixed portfolio (inside and outside work) usually points toward a PSC with the option to umbrella inside work.
From April 2026, the umbrella joint and several liability reform makes agency and end-client compliance tighter, so choose a transparently compliant umbrella.
Extraction strategy and compliance overhead drive the real cost of either route, not the headline structure alone.

Why the Choice Matters

A limited company (personal service company, or PSC) and an umbrella company are fundamentally different structures with different tax and admin consequences. The question "which is better" has no single answer because it depends on whether your work is inside or outside IR35, whether you plan to retain profits, and how much compliance overhead you can tolerate. The firm's position is clear: do not assume the limited company is always superior. The inside/outside mix drives the answer. For a clearer understanding of your own status, see our what is IR35 guide.

Inside-IR35: The Case for Umbrella

When you are caught by IR35 (treated as an employee in substance), the economic case for an umbrella strengthens considerably. An inside-IR35 umbrella engagement is simpler and often cheaper than running a PSC for that work.

Here is why. A PSC treating an engagement as inside IR35 must operate PAYE and National Insurance on a deemed employment payment at year-end. That requires an accountant to compute the deemed payment, file statutory accounts, and file a Corporation Tax return. Those accountancy costs are a fixed annual overhead (market quotes commonly sit in the GBP 800 to GBP 2,000 range, but figures vary widely by provider, so treat that as a rough guide). An umbrella, by contrast, costs you nothing directly. The umbrella's margin (a fixed weekly or monthly fee, or a small percentage of the rate, depending on the provider) plus legitimate employer National Insurance deductions (15 percent on earnings above the secondary threshold of GBP 5,000 per year) come out of the assignment rate. You receive a net salary, a payslip, and a P60 at year-end. The umbrella handles the compliance.

For a typical inside-IR35 assignment, the umbrella usually delivers a better take-home. Why? Because a PSC running inside-IR35 work must pay fixed accountancy fees from taxable profit, and those fees often outweigh the umbrella's margin, while the inside-IR35 deemed payment washes out most of the corporate tax advantage. The exact gap depends on your assignment rate, whether you hold multiple assignments (which spreads accountancy costs), and whether you plan significant pensions contributions via the PSC. For a single inside-IR35 assignment with no outside-IR35 work alongside it, the umbrella usually wins on take-home, but the deciding factor is the inside/outside mix and your appetite for compliance, not a particular income figure.

The hidden admin overhead of a PSC for inside-IR35 work is worth understanding. Under Chapter 10 (which applies when your client is a medium or large company), there is no 5 percent expenses allowance to offset compliance costs. The PSC must compute the deemed direct payment (taking the assignment income, deducting VAT and materials, then calculating deemed salary and National Insurance), operate PAYE on that deemed amount, and file quarterly payroll returns. Under Chapter 8 (which applies for small clients or overseas clients with no UK fee-payer), the 5 percent allowance exists, but the PSC still must self-assess and file statutory accounts and a Corporation Tax return. Either way, the admin sits with you. An umbrella puts that admin on the umbrella provider, leaving you to focus on the work.

Another reason the umbrella often wins on inside-IR35 work is the deemed payment calculation itself. For a Chapter 10 (off-payroll) inside-IR35 engagement, the fee-payer must deduct employer National Insurance at 15 percent from the assignment rate before the PSC is paid. That is a direct hit to your take-home. The umbrella, operating as your legal employer, does exactly the same deduction, but it is transparent upfront (shown in the Key Information Document) rather than buried in a deemed payment calculation at year-end. The economic result is similar, but the umbrella gives you clarity about what you will actually take home.

Outside-IR35: The Case for a Limited Company

When your engagement is outside IR35, or when you hold a portfolio of both inside and outside work, a PSC offers tax efficiency that an umbrella cannot match.

An outside-IR35 PSC director can extract profit as dividends, using a salary/dividend split to minimise tax and National Insurance. For 2026/27, the standard strategy is a salary at or near the personal allowance (GBP 12,570 if the company can claim Employment Allowance, or GBP 6,708 or GBP 5,000 for a single-director company) plus dividends. Dividends are taxed at 10.75 percent (ordinary rate) in the basic-rate band, with a GBP 500 allowance, and carry no National Insurance. This extraction route is not available in an umbrella, where the umbrella is the legal employer and you receive a single taxed salary.

The concrete advantage of this salary/dividend split is substantial. Consider a contractor with GBP 80,000 profit from an outside-IR35 PSC. Taking a salary of GBP 12,570 and dividends of GBP 67,430 (a simplified example), the contractor pays corporation tax at approximately 19 to 26.5 percent on the profit (depending on the marginal band), plus income tax and employee National Insurance on the salary, plus dividend tax on the dividends above the allowance. The overall effective rate on outside-IR35 profit is lower than umbrella employment income, where the full GBP 80,000 would be subject to PAYE, employee National Insurance (8 percent up to GBP 50,270), and income tax. The dividend allowance (GBP 500) and the basic-rate dividend rate (10.75 percent from 6 April 2026) amplify the advantage. For a detailed analysis of this extraction strategy, see our PSC limited company contractor tax guide.

The outside-IR35 advantage also includes working practice freedom. Outside-IR35 contractors are not subject to PAYE deemed payment calculations, so the PSC accountancy is simpler. You can also carry forward losses to future years and retain profits for reinvestment, both valuable if you are building a contracting business or saving for expansion. If you have a lean year (a longer gap between assignments, or a low-rate project), the PSC lets you carry forward losses against future profits, smoothing your tax over time. An umbrella offers no such flexibility; if you are between assignments, you are not paid.

Additionally, an outside-IR35 PSC offers tax-efficient pension contributions. An employer pension contribution from the PSC is deductible against corporation tax, attracts no National Insurance, and is not taxed on the director as income (subject to the annual allowance of GBP 60,000 for 2026/27, with carry-forward available from the previous three years). See our contractor pension employer contributions guide for a deeper dive into this leverage. For a contractor with significant profit, an employer pension contribution is often the single most tax-efficient extraction route. Concretely, if your PSC has GBP 100,000 profit and you make a GBP 40,000 employer pension contribution, the company pays corporation tax only on GBP 60,000 (saving GBP 11,400 to GBP 15,900 in corporation tax), and the GBP 40,000 goes into your pension free of income tax and National Insurance. Over a working career, that compounds substantially. An umbrella, by contrast, puts you at the mercy of the umbrella's pension offerings (if any), and employer contributions into your personal pension come from your net salary, not the company's pre-tax profit.

The Mixed Portfolio: Inside and Outside Work

Many contractors do not fit neatly into one category. A contractor might hold one inside-IR35 engagement with a large firm and simultaneously take outside-IR35 project work for smaller clients. This mixed pattern is common and suggests a PSC, with the option to take inside-IR35 work via an umbrella when appropriate.

Here is how it works. You run a PSC and use it for your outside-IR35 work and any retained profits. For inside-IR35 assignments, you can either (a) keep the work in the PSC and operate the Chapter 8 or Chapter 10 deemed payment calculation, or (b) take the work via an umbrella alongside the PSC. Option (b) is often the better deal because it quarantines the inside-IR35 compliance within the umbrella and leaves your PSC for the outside work where the tax efficiency is real. You then decide on a case-by-case basis.

The real-world example illustrates this well. A contractor might run a PSC for outside-IR35 freelance projects (say, 3 months of GBP 50,000 income per year) and take a 9-month inside-IR35 contract with a large firm (say, GBP 60,000 per year). Running both streams in the PSC means the accountant must handle the Chapter 10 deemed payment calculation for the inside-IR35 part, adding complexity and cost. Instead, the contractor can take the inside-IR35 work via an umbrella (GBP 60,000 assignment rate, umbrella takes care of PAYE), keep the outside-IR35 freelance work in the PSC (GBP 50,000, extracted as salary and dividends), and minimise overall compliance. The PSC accountancy is simpler because it covers only the outside-IR35 work; the umbrella handles the inside piece. The contractor can also use the PSC's outside-IR35 profit for a generous employer pension contribution, leveraging the corporation-tax deduction.

The trade-off is that you now manage two structures. You need to keep your PSC accounting and the umbrella arrangement separate, ensure each client knows which structure they are using, and make sure your contracts and IR35 determinations align. The umbrella must have a clear, separate contract of employment with you; the PSC must have separate client contracts. You will receive two sets of year-end documents (a P60 from the umbrella, a form CT600 and dividend voucher from the PSC). But the flexibility and the tax arbitrage between inside and outside work often justify the extra compliance. This pattern is especially common among contractors who have built a freelance client base (outside-IR35) but also take agency/fixed-term roles (often inside-IR35).

The Real Running Costs of a Limited Company

The hidden cost of a PSC is not just accountancy fees. Consider the full picture.

Accountancy and compliance are a fixed annual cost for a straightforward single-director PSC (market quotes commonly fall in the GBP 800 to GBP 2,000 range, but figures vary widely by provider and complexity, so treat that as a rough guide). This covers statutory accounts (required even if profit is low), a CT600 Corporation Tax return, and the accountant's time to advise on salary, dividends, and extraction strategy. If the PSC is inside IR35, the cost tends to sit at the higher end because the deemed payment calculation adds complexity. Under Chapter 10 (off-payroll), the deemed-payment computation requires the accountant to track the assignment income, any VAT charged, materials, and then calculate the deemed direct payment, applying PAYE and National Insurance. This is more involved than a straightforward outside-IR35 accounting year.

Beyond accountancy, a PSC requires you to register for PAYE (if you take a salary), file payroll information quarterly to HMRC, and operate pension contributions if you plan to use them. Most accountants include PAYE filing in their annual fee, though some charge a small additional amount for it. There are also the upfront cost of incorporating the company and the annual filing at Companies House (usually folded into the accountancy fee). If you wind up the company later, there are dissolution costs, though a straightforward strike-off is cheap or free. These figures vary by provider; treat them as illustrative market context rather than firm quotes. Taken together, the running costs of a PSC are not trivial over a multi-year career.

The real leverage in a PSC comes from tax efficiency on outside-IR35 work and from pension contributions, not from cost savings on compliance. A PSC makes sense when the tax efficiency on your actual earnings outweighs the compliance costs, and that turns on the inside/outside mix rather than on an income figure alone. For a contractor whose work is all inside IR35, the PSC is rarely worth it: the fixed accountancy cost is a meaningful slice of income and there is no tax-efficiency gain to offset it, because the inside-IR35 deemed payment washes out most of the corporate advantage. For a contractor with a genuine mix of inside and outside work, the PSC usually makes sense. The outside-IR35 portion generates real tax savings (through the salary/dividend split and pensions), and those savings outweigh the accountancy cost.

One often-missed cost is the time burden. A PSC requires you to keep records, provide your accountant with information, and understand your own tax position. If you are a contractor focused on billable work, your time is valuable. An umbrella removes that burden from you entirely. Some contractors factor in an implicit time cost when evaluating structures, especially if they are not comfortable with accounting and tax concepts.

National Insurance: The Silent Pressure on Take-Home

National Insurance is the cost that bites hardest when you compare umbrella and PSC take-homes.

Employer National Insurance runs at 15 percent on earnings above the secondary threshold of GBP 5,000 per year. Whether you work via umbrella or PSC, that 15 percent hit happens. The difference is when and how it appears.

In an umbrella, the employer National Insurance is deducted from your assignment rate before you are paid. If the assignment rate is GBP 50,000, the umbrella deducts roughly GBP 6,750 for employer National Insurance (15 percent on the GBP 45,000 above the GBP 5,000 secondary threshold), plus the Apprenticeship Levy where it applies, plus the umbrella's margin. You take home less. This is the transparent, upfront deduction mentioned in your Key Information Document.

In a PSC, you pay the same 15 percent employer National Insurance on whatever salary you take, but you can then extract the remaining profit as dividends with no further National Insurance. So if you take GBP 6,708 salary and GBP 43,292 dividend from a GBP 50,000 profit (before tax), you pay employer National Insurance only on the salary, not the full amount. This is the extraction advantage that outside-IR35 contractors prize. The employer National Insurance saving is real: instead of GBP 6,750 on a full GBP 50,000 of employment earnings, you pay only GBP 256 on the GBP 6,708 salary (15 percent on the GBP 1,708 slice above the GBP 5,000 secondary threshold). That is a saving of around GBP 6,494 compared to the umbrella route, assuming the same assignment rate.

For inside-IR35 work in a PSC, the National Insurance pressure is similar in both structures because the deemed payment calculation in a PSC approximates what the umbrella deducts. Under Chapter 10, the fee-payer must deduct employer National Insurance from the assignment rate as part of the deemed payment calculation. Under Chapter 8 (small-client inside IR35), the PSC self-assesses and the National Insurance bill is similar. The PSC does not gain the dividend extraction advantage for inside-IR35 income; instead, the PSC's cost (accountancy fees) becomes the real differentiator. So for inside-IR35 work, do not expect the National Insurance savings to offset the compliance costs. The umbrella's lower compliance burden usually wins.

The April 2026 Umbrella Reform: What Changed

From 6 April 2026, a significant reform tightened umbrella company oversight. The recruitment agency that contracts with your end client (or the end client itself where there is no agency in the chain) became jointly and severally liable with the umbrella for any PAYE and National Insurance the umbrella fails to remit. The umbrella remains your legal employer, but the joint and several liability means HMRC can pursue the agency or end client if the umbrella breaks its obligations. Enacted under Finance Act 2026 section 24, which inserted new Chapter 11 (sections 61Y to 61Z2) into ITEPA 2003, this is a substantial shift in umbrella accountability.

This reform is a tax-compliance measure, not full umbrella regulation (a separate regulatory regime is expected later). But it has a practical effect: agencies and end clients now scrutinise which umbrellas they engage far more carefully. Many have tightened their preferred supplier lists and now require umbrellas to be accredited (FCSA or Professional Passport). This is good for contractors because it weeds out non-compliant umbrellas that promise inflated take-home rates by skimming National Insurance, running mini-umbrella frauds, or hiding deductions. The joint and several liability makes those schemes risky for the agencies and clients that engage non-compliant umbrellas, so they have a strong incentive to use reputable providers.

Before the April 2026 reform, an unscrupulous umbrella could operate with lax compliance because the contractor bore the risk (HMRC would pursue the contractor for unpaid PAYE/NIC). Now the agency and end client share that risk, so they have every reason to vet umbrellas carefully. From a contractor's perspective, this is a win. It pushes the market toward transparency and compliance. However, it also means some previously marginal umbrellas may become unavailable if they do not meet the tighter standards.

The upshot is simple: use a transparently compliant umbrella. Before you start an assignment, insist on a clear Key Information Document showing the assignment rate, all deductions (employer National Insurance, Apprenticeship Levy, umbrella margin), and the expected net pay. Avoid any umbrella promising take-home rates that imply tax is not being properly deducted. Those are a marker of tax avoidance schemes, and HMRC will pursue the contractor, not just the umbrella, when caught. The April 2026 reform makes this risk even more acute because the agency is now jointly liable and may be even more aggressive about clawing back unpaid tax if it is discovered later.

One practical implication of the reform is that agency paperwork has become more rigorous. You will now receive more formal documentation when you start an umbrella assignment, and the agency will want evidence that you have understood the terms (including the Key Information Document). This is good practice, not a red flag. It is the sign of a compliant market.

Pensions: Where the PSC Shines

Pensions are where a PSC offers leverage that an umbrella cannot match. An employer pension contribution from a PSC is deductible against corporation tax, carries no National Insurance, and is not taxed on the director as income (subject to the annual allowance of GBP 60,000 for 2026/27, with carry-forward available).

Concretely, if your PSC has GBP 80,000 profit and you make a GBP 30,000 employer pension contribution, the company is taxed on GBP 50,000 (saving GBP 5,000 to GBP 12,500 in corporation tax, depending on the rate), and the GBP 30,000 goes into your pension free of income tax and National Insurance. That is a real saving. An umbrella company gives you no equivalent. You can save into a personal pension from your net umbrella salary, but the contribution comes from your after-tax earnings, not from the company's pre-tax profit.

If pensions are a major part of your retirement planning, that alone is a strong argument for a PSC, even if some of your work is inside IR35. You can run the PSC for the outside-IR35 work and the pension contributions, and take inside-IR35 work via an umbrella.

Compliance and Peace of Mind

There is an underrated advantage to an umbrella: simplicity. You provide your bank details and right-to-work document to the umbrella, you receive a payslip and a P60 at year-end, and the umbrella handles PAYE, National Insurance, and year-end reporting. Your tax affairs are clean. You do not need to file a Self Assessment return (unless you have other income). You do not file statutory accounts or a Corporation Tax return. You just work. For many contractors, this simplicity is worth more than the small amount of extra take-home a PSC might offer.

A PSC, by contrast, demands ongoing compliance. You must register for PAYE if you take a salary, file payroll information quarterly (on the Real Time Information (RTI) system), operate statutory accounts (even if there is little profit), file a CT600 at year-end, and manage your own Self Assessment for any salary and dividends. The quarterly RTI filing is mandatory if you operate PAYE, and missing deadlines can trigger penalties. For many contractors, this overhead is worth it because of the tax efficiency, but it is not free in time or stress. If you are not comfortable with accounting software or prefer not to think about tax, the compliance burden of a PSC can feel significant.

Another compliance angle is record-keeping. A PSC must keep records of invoices from clients, evidence of expenses, and payroll records for at least six years. HMRC can ask for these records at any time (via a discovery assessment). An umbrella contractor also needs to keep records (for expenses or future tax returns), but the administrative load is lighter because the umbrella handles the employment side.

After the April 2026 umbrella reform, the compliance profile has shifted slightly. Umbrellas themselves face tighter oversight, so reputable umbrellas are investing in compliance infrastructure (PAYE reporting, Key Information Documents, audit trails). The trade-off is that rogue umbrellas (and there are still some) face higher penalties, which is good for you because your chosen umbrella is likely more trustworthy. But you still need to choose wisely. An accredited umbrella with a clear compliance history is your baseline. Check for FCSA membership or Professional Passport accreditation before signing.

What Actually Drives the Cost Comparison

It is tempting to look for an income threshold above which a PSC always wins, but that is the wrong lens. The factors that genuinely move the decision are the inside/outside mix of your work, your compliance appetite, and your pension plans, not a single income figure.

For inside-IR35 work, the umbrella's edge comes from avoiding a fixed annual accountancy bill: the lower your inside-IR35 income, the larger a share that fixed cost consumes, and the inside-IR35 deemed payment washes out the corporate tax advantage either way. So a contractor whose work is all inside IR35 will usually find the umbrella cheaper and simpler. Where you also hold outside-IR35 work, plan significant pension contributions, or expect the engagement to flip to outside IR35, the calculation shifts toward keeping a PSC.

For outside-IR35 work the picture is clearer: the salary/dividend extraction and the employer pension contribution are not available in any other structure, so a PSC is almost always more efficient regardless of income level.

Your actual position depends on the inside/outside split of your engagements, whether you have other earnings, your Employment Allowance eligibility, and your pension strategy. Work with an accountant to model your situation rather than relying on a rule of thumb.

The Decision Framework

Here is the locked firm stance, stated plainly. For a genuinely inside-IR35 engagement, an umbrella is usually the simpler and often the more economical route. You keep no PSC running costs, no double-layer of PAYE administration, no year-end accountancy burden. While a PSC makes sense where you also hold outside-IR35 work, want to retain profits, or value the company for pensions, the inside-IR35 structure does not benefit from incorporation. Do not let a sales pitch persuade you otherwise.

That said, context matters. A contractor with a portfolio of work (some inside, some outside IR35) will usually choose a PSC, taking inside-IR35 work via an umbrella where the economics suit. A contractor on a single inside-IR35 assignment should look hard at umbrella, unless they plan major pensions contributions or expect the engagement to flip to outside IR35.

Whichever you choose, use a compliant provider. For a PSC, choose an accountant who advises (not one running a package "company-run-for-you" scheme, which carries MSC risks when choosing an accountant). For an umbrella, use one with FCSA or Professional Passport accreditation, a clear Key Information Document, and no inflated "expenses" or tax-avoidance markers.

Making the Switch

Switching structures mid-engagement is possible but requires careful planning. If you move from a PSC to an umbrella, you must close the company and close PAYE, typically coordinated with the accountant and your clients. If you move from an umbrella to a PSC, you incorporate, register for PAYE, and move the engagement (if the client agrees). The IR35 status of the engagement does not change when you switch, so the decision is purely structural.

Most contractors do not switch often. Once you settle on a structure, you tend to stay in it unless a material change (a major inside-IR35 contract ending, a decision to go all-outside IR35, a significant increase in income) triggers a re-evaluation. Plan your structure for the medium term, not month to month.

The Bottom Line

Neither an umbrella nor a limited company is universally superior. The right choice depends on your IR35 status, your work portfolio, your tolerance for compliance, and your long-term plans. For inside-IR35 work alone, umbrella is usually cheaper and simpler. For outside-IR35 work, a PSC is essential. For a mixed portfolio, a PSC with the option to umbrella inside work offers the best flexibility.

The April 2026 reform has made compliant umbrellas the default option for inside-IR35 work. Choosing one is no longer a compromise; it is the pragmatic move. Equally, the tax efficiency of outside-IR35 extraction via a PSC (salary/dividend split, pensions leverage) remains unmatched. Use each structure where it belongs, and you will optimise both your take-home and your peace of mind.

If you are unsure about your IR35 status or which structure suits your situation, speak to your accountant or a tax specialist. The choice has real money implications, so it is worth getting right.

Learn more about your IR35 status with our IR35 status guide, or explore your options with our contracting tax services.

Frequently asked questions

Is a limited company always better than an umbrella for a contractor?: No. For genuinely inside-IR35 work, an umbrella is often simpler and more economical because you avoid PSC running costs, accountancy fees, and the administrative burden of operating PAYE yourself. A limited company makes sense where you hold outside-IR35 work, want to retain profits for reinvestment, or plan significant pensions contributions. The right choice depends on your IR35 status and your work mix, not the structure alone.
What is the April 2026 umbrella reform and does it affect me?: From 6 April 2026, the recruitment agency that contracts with your end client (or the client itself where there is no agency) becomes jointly and severally liable with the umbrella for any PAYE and National Insurance the umbrella fails to remit. The umbrella stays your legal employer, but this reform tightens compliance. It means agencies and end clients will scrutinise which umbrellas they use more carefully, so you should use a transparently compliant umbrella (FCSA or Professional Passport accredited, clear Key Information Document, no inflated "expenses").
What does "inside IR35" and "outside IR35" mean for choosing between umbrella and limited company?: Inside IR35 means HMRC treats you as an employee in substance, so you pay employment tax even if formally self-employed. Under Chapter 10 (medium/large clients), the client issues a Status Determination Statement; under Chapter 8 (small clients), you assess yourself. For inside work, an umbrella is usually cheaper because you avoid PSC running costs. Outside IR35, you get to extract profit as dividends and claim the tax-efficient salary/dividend split, which favours a limited company.
How much does it cost to run a limited company versus an umbrella?: A limited company carries annual accountancy and compliance costs (statutory accounts, CT600, Self Assessment); market quotes commonly fall in the GBP 800 to GBP 2,000 range, but figures vary widely by provider and complexity, so treat that as a rough guide. An umbrella costs nothing directly to you (the umbrella margin is deducted from your assignment rate before you are paid). The umbrella's margin (a fixed weekly or monthly fee, or a small percentage of the rate, depending on the provider) plus legitimate deductions for employer National Insurance and the Apprenticeship Levy comes out of your take-home, whereas a PSC's accountancy costs come from taxable company profit.
Can I switch between an umbrella and a limited company mid-year?: Switching is administratively possible but should be planned carefully with your accountant. Moving from a limited company to an umbrella requires you to shut the PSC and close PAYE, both triggered by Your Tax Advisor. Moving from an umbrella to a PSC requires setting up the company, registering for PAYE, and switching clients (if they permit). The IR35 status of the engagement does not change when you switch structure, so timing matters less than ensuring the new structure is genuinely the right fit.
What happens to my salary and dividends if I go inside-IR35 and move to an umbrella?: When you move to an umbrella, you cease extracting profit as salary and dividends. Instead, the umbrella pays you a fixed assignment rate less deductions (employer National Insurance 15%, the Apprenticeship Levy, and the umbrella's margin). You receive a single net salary from the umbrella. The umbrella must give you a Key Information Document before you start, showing the rate and expected take-home. Importantly, you are entitled to holiday pay, which must be paid and not unlawfully retained.
Can I run a limited company and an umbrella at the same time?: Yes. A common pattern is to hold a PSC for outside-IR35 work and inside-IR35 assignments via an umbrella. This lets you extract outside-IR35 work as salary/dividends in the PSC, while the umbrella handles the simpler administrative route for inside work. However, you must be clear with your clients which structure you are using for each engagement and ensure your contracts and IR35 status align.
What is the 5 percent allowance and why does it disappear for inside-IR35 work?: Under Chapter 8 (where small clients apply), if you run a PSC and are inside IR35, you get to deduct a flat 5 percent of your engagement income as an administrative expenses allowance. This goes some way toward covering accountancy and compliance. Under Chapter 10 (medium/large clients), this 5 percent allowance does not exist. So one real cost difference between Chapter 8 and Chapter 10 is that the 5 percent relief disappears.
Is an umbrella treated as an employee or self-employed for tax?: An umbrella company is your legal employer, so you are treated as an employee. The umbrella operates PAYE and National Insurance on your behalf from your assignment rate. However, you are not an employee of the end client (the client may issue a Status Determination Statement saying you are inside IR35, but that does not change your employment status with the umbrella itself). For tax and National Insurance purposes, umbrella work is employment income.
What is the take-home difference between an umbrella and a limited company for inside-IR35 work?: For a genuinely inside-IR35 engagement at the same assignment rate, an umbrella usually gives a better take-home because you avoid PSC running costs and the double-layer PAYE admin. In a PSC, fixed accountancy and compliance costs eat a larger share of a modest inside-IR35 income, whereas an umbrella's only cost on top of the statutory deductions (employer National Insurance and the Apprenticeship Levy, both funded from the assignment rate) is its own margin. Because that margin is typically a small fixed fee rather than a fixed annual accountancy bill, the umbrella often comes out ahead on inside-IR35 work. The gap narrows if you hold multiple assignments (spreading accountancy costs) or if you plan significant pensions contributions via the PSC.
What tax and compliance obligations do I have on an umbrella assignment?: When you work via an umbrella, the umbrella is responsible for PAYE and National Insurance. You must provide the umbrella with your bank details and a valid right-to-work document (passport, visa, settled status) before starting. You will receive payslips and an end-of-year P60. For tax, the umbrella's PAYE deductions flow to HMRC, and you typically do not need to file a Self Assessment return unless you have other income. The umbrella (as your employer) is responsible for compliance, which is why choosing a compliant umbrella matters, especially after the April 2026 reform.
Should I plan for National Insurance when comparing umbrella and limited company costs?: Yes. If you work via an umbrella, employer National Insurance (15 percent on earnings above the GBP 5,000 per year secondary threshold) is deducted from your assignment rate before you are paid. If you run a PSC, you pay employer National Insurance on your salary (same 15 percent), and then you can extract profit as dividends with no National Insurance. For inside-IR35 work in both structures, National Insurance costs are roughly the same; the difference is that the umbrella deducts it upfront, while a PSC lets you manage the timing. For outside-IR35 work, the PSC advantage is that you pay National Insurance only on the salary you take, not on the full profit you extract as dividends.
What is a Key Information Document and why does my umbrella need to provide one?: A Key Information Document is a legal requirement under the Conduct of Employment Agencies and Employment Businesses Regulations 2003. The umbrella must give it to you in writing before you start an assignment, showing the assignment rate, the deductions (employer National Insurance, Apprenticeship Levy, umbrella margin, any other costs), and the expected take-home pay. It is your evidence of what you agreed. If the document is missing, vague, or shows deductions that seem inflated, that is a red flag. Always request and review it before signing.

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Umbrella vs Limited Company: Which is Right for Your Contracting Career

Why the Choice Matters

Inside-IR35: The Case for Umbrella

Outside-IR35: The Case for a Limited Company

The Mixed Portfolio: Inside and Outside Work

The Real Running Costs of a Limited Company

National Insurance: The Silent Pressure on Take-Home

The April 2026 Umbrella Reform: What Changed

Pensions: Where the PSC Shines

Compliance and Peace of Mind

What Actually Drives the Cost Comparison

The Decision Framework

Making the Switch

The Bottom Line

Frequently asked questions

Not sure where you stand on IR35?

How to Choose a Compliant Umbrella Company in the UK

Moving from Umbrella to Limited Company: When It Makes Sense

Umbrella Company Deductions and Pay: Reading Your Payslip

Umbrella vs Limited Company: Which is Right for Your Contracting Career

Why the Choice Matters

Inside-IR35: The Case for Umbrella

Outside-IR35: The Case for a Limited Company

The Mixed Portfolio: Inside and Outside Work

The Real Running Costs of a Limited Company

National Insurance: The Silent Pressure on Take-Home

The April 2026 Umbrella Reform: What Changed

Pensions: Where the PSC Shines

Compliance and Peace of Mind

What Actually Drives the Cost Comparison

The Decision Framework

Making the Switch

The Bottom Line

Frequently asked questions

Not sure where you stand on IR35?

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How to Choose a Compliant Umbrella Company in the UK

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Umbrella Company Deductions and Pay: Reading Your Payslip