Why an umbrella payslip needs its own explanation

Pick up a standard employment payslip and the logic is simple: a gross salary, income tax, employee National Insurance, and a net figure at the bottom. An umbrella payslip follows the same PAYE mechanics at the bottom, but above the gross-pay line there is an entirely separate layer of deductions that most contractors never see explained clearly. Those deductions come out of the assignment rate before your gross pay is even set, which is why the same daily rate produces a different outcome through an umbrella than it does through a limited company.

This guide walks through every line from the assignment rate down to net pay, shows you how to run the reconciliation yourself, and explains precisely what the numbers should look like and what it means if they do not add up. If you want a broader picture of how umbrella companies work and what they cost, the guide on umbrella companies explained covers the full model including when to use one and how to choose compliantly.

Line 1: the assignment rate

The assignment rate is the total amount your agency or end client pays to the umbrella for your services. It may be quoted as a daily rate, an hourly rate or an annualised figure, but however it is expressed it is the umbrella's entire funding envelope for you. Everything, including your pay, comes from it.

A compliant umbrella will disclose the assignment rate in your Key Information Document (KID) before the assignment starts, under the Conduct of Employment Agencies and Employment Businesses Regulations 2003. The KID must set out the rate, every planned deduction above and below the gross-pay line, and the expected net take-home. If the umbrella or agency cannot produce a KID with a stated assignment rate before you sign, that is a compliance failure, not a minor administrative oversight.

The reason the assignment rate matters so much is that it fixes the ceiling for everything below it. You cannot negotiate a higher gross pay while holding the assignment rate constant: there is no additional budget. This is what people mean when they say that employer NIC and the margin "come out of your rate".

Lines 2 and 3: employer NIC and the Apprenticeship Levy

The two deductions that come out of the assignment rate before your gross pay is set are employer Class 1 NIC and the Apprenticeship Levy. Both are genuine employment costs that the umbrella incurs as your employer and passes through to the assignment rate rather than absorbing themselves.

Employer NIC at 15%

Employer secondary Class 1 NIC runs at 15% on earnings above the secondary threshold of £5,000 for 2026/27. The rate rose from 13.8% and the threshold fell from £9,100, both from 6 April 2025, and those figures carry into 2026/27 unchanged. The umbrella calculates the charge on your annualised gross pay, not on the raw assignment rate.

To illustrate: suppose your assignment rate is £500 per day and you work five days a week. That produces roughly £130,000 a year (260 days). After the employer-NIC and other deductions below, your gross pay might be set at around £115,000. The employer NIC charge on that gross pay would be 15% of (£115,000 minus £5,000) = 15% of £110,000 = £16,500 per year, or about £317 per week. That £317 per week comes out of your £500-per-day funding envelope before you see a penny of gross pay. It is not small, and it is why umbrella take-home always sits below the equivalent limited-company figure for the same day rate on an outside-IR35 engagement.

Note that the Employment Allowance (£10,500 for 2026/27) offsets employer NIC for eligible employers, but a large umbrella with many employees will have long exhausted its Employment Allowance across its whole payroll; individual contractors cannot assume their assignment benefits from it.

The Apprenticeship Levy

The Apprenticeship Levy is charged at 0.5% of an employer's total annual pay bill. Every employer receives a £15,000 annual levy allowance to offset against it, so in practice only employers with a pay bill over £3 million (0.5% of which is £15,000) actually pay the levy. An umbrella company with a significant number of workers has a pay bill well above £3 million, so it pays the levy on its aggregated payroll and typically passes the attributable cost through to each worker's assignment rate on a pro-rata basis. The figure is small on any individual assignment, often a few pounds per week, but it should appear as a named line in your KID and in the supporting breakdown on your payslip. An inability to state this figure is a sign the umbrella is not being transparent about what it is taking from the rate.

Line 4: the umbrella's margin

After employer NIC and the Apprenticeship Levy, the umbrella deducts its own margin, the fee that covers its operating costs and profit. A compliant umbrella states this as a fixed weekly or monthly pound figure, not as a percentage of your pay or a blended amount that shifts week to week.

The specific amount matters less than its transparency. An umbrella charging £20 per week and showing it clearly on your KID and payslip is preferable to one charging £10 per week that cannot explain how it derives the figure. When you compare umbrella quotations, always compare on a fixed disclosed margin, not on a headline take-home figure: the headline can be manipulated by varying the margin disclosure, increasing the assignment rate assumption or omitting certain deductions from the illustration.

After the margin is taken, what remains is your gross pay. That gross pay figure is the starting point for the PAYE deductions below the line.

The gross pay figure and holiday pay

Gross pay, as set by the assignment rate minus employer NIC minus the Apprenticeship Levy minus the margin, is the figure from which income tax and employee NIC are calculated. It is not always a round number, and on a payslip that covers a partial week or a variable number of days it can look unfamiliar. The key check is that it ties back to the assignment-rate calculation, not that it matches some expected figure in isolation.

Holiday pay adds a layer that many contractors find confusing. Under the Working Time Regulations 1998, you are entitled to at least 28 days of paid annual leave per year as an umbrella employee. That leave must be paid. How it appears in the gross-pay figure depends on the model your umbrella uses.

In the rolled-up model, a portion of the assignment rate is designated as holiday pay, built into the gross-pay figure, and itemised as a separate named line on every payslip. In the accrual model, the holiday element is held back and paid out when you actually take leave, with a separate entry on that payslip. Either can be compliant, but only if the holiday element is clearly named, never pocketed by the umbrella, and paid out (including any untaken balance) on termination.

If your payslip shows a gross-pay figure that implies holiday pay has been funded from the assignment rate but contains no holiday-pay line, and you are never paid when you take leave, the holiday element is being unlawfully retained. The guide on umbrella company holiday pay covers the entitlement rules, rolled-up arrangements and your remedies in detail. For the purposes of reading your payslip, the rule is simple: every pound of holiday funding that comes out of your assignment rate must reappear on your payslip, one way or another.

Below the line: PAYE income tax and employee NIC

With gross pay established, the umbrella operates PAYE exactly as any employer would. There are two deductions.

Income tax under PAYE

Income tax is calculated on your gross pay using your tax code, which determines how much personal allowance you can set against earnings in each pay period. For 2026/27 the personal allowance is £12,570, frozen to April 2031. Income above the personal allowance is taxed at 20% up to the higher-rate threshold of £50,270, at 40% from £50,270 to £125,140, and at 45% above £125,140. The higher-rate threshold is also frozen to April 2031, which means fiscal drag is a genuine issue: as day rates rise over the freeze period, more contractors are pulled into the 40% band without any change to the headline rate.

If you have multiple income sources (for example, you also draw a salary from a limited company you maintain alongside umbrella work) your tax code will reflect that, and the umbrella will collect tax accordingly. An incorrect tax code is a common source of under or over-payment, and it is worth checking your code on your payslip against your personal circumstances.

Employee NIC

Employee primary Class 1 NIC for 2026/27 runs at 8% on earnings between the primary threshold of £12,570 and the upper earnings limit of £50,270, and at 2% on earnings above £50,270. Like income tax, it is calculated on gross pay, not on the assignment rate. The lower earnings limit of £6,708 for 2026/27 is the floor at which national insurance credits accrue for state pension purposes; earnings above this threshold but below the primary threshold build NI credits without triggering an employee NIC charge.

For a contractor earning well above £50,270 in annualised gross pay, the 2% rate above the upper earnings limit means the marginal employee NIC cost tapers off significantly. The more significant costs at those earnings levels are income tax at 40% and, below the line, the employer NIC that has already come out of the assignment rate.

A worked reconciliation

Concrete numbers make this easier to follow. The figures below are illustrative, using 2026/27 rates, for a contractor on a £450 per day assignment rate working five days a week for a full week (£2,250 weekly assignment rate). At five days a week across a full year this is an assignment rate of about £117,000, which means the contractor is a higher-rate taxpayer: a large slice of the gross pay falls above the £50,270 higher-rate threshold (£966.73 per week), so the worked example carries 40% income tax, not just basic rate.

One mechanical point first. Employer NIC is charged on the gross pay, but the gross pay is itself the assignment rate after employer NIC, margin and levy are removed. The umbrella resolves this circularity by working backwards: it takes the assignment rate, removes the margin and levy, then splits what is left between gross pay and the employer NIC due on that gross pay. The figures below show the result of that calculation.

From the assignment rate to gross pay:

  • Assignment rate for the week: £2,250.00
  • Less umbrella margin (illustrative): £20.00 per week
  • Less Apprenticeship Levy pro-rata (illustrative): £4.00 per week
  • Leaves a pot of £2,226.00 to split between gross pay and the employer NIC on it
  • Less employer NIC (15% on gross pay above the £5,000 secondary threshold, which is £96.15 per week): £277.81 per week
  • Gross pay for the week (including any rolled-up holiday element): £1,948.19

The gross pay (£1,948.19) plus the employer NIC on it (£277.81) add back to the £2,226.00 pot, which confirms the split is right: £1,948.19 + (15% of (£1,948.19 minus £96.15)) = £1,948.19 + £277.81 = £2,226.00.

From gross pay to net pay (approximate, higher-rate taxpayer, standard tax code):

  • Gross pay: £1,948.19
  • Personal allowance per week (£12,570 divided by 52): £241.73 (no tax on this portion)
  • Higher-rate threshold per week (£50,270 divided by 52): £966.73
  • Income tax at 20% on the band from £241.73 to £966.73 (£725.00): £145.00
  • Income tax at 40% on gross pay above £966.73 (£1,948.19 minus £966.73 = £981.46): £392.59
  • Total income tax for the week: approximately £537.59
  • Employee NIC at 8% on earnings between the £241.73 primary threshold and the £966.73 upper earnings limit (£725.00): £58.00
  • Employee NIC at 2% on earnings above £966.73 (£981.46): £19.63
  • Total employee NIC for the week: approximately £77.63
  • Net take-home for the week: £1,948.19 minus £537.59 minus £77.63 = approximately £1,332.97

This is an approximation: actual figures depend on tax code, the annualisation method the umbrella uses and whether holiday pay is rolled in or accrued separately. The purpose of working through the numbers is not to arrive at a precise figure but to show that every line is traceable back to a published rate. If your payslip produces a different net figure without a clear explanation of which line differs, that gap needs an answer.

Annualised (multiplying each weekly figure by 52), this contractor keeps roughly £69,315 of a £117,000 assignment rate. The balance goes to employer NIC (about £14,446), the Apprenticeship Levy (£208), the margin (£1,040), income tax (about £27,955, reflecting the 40% band) and employee NIC (about £4,037). Gross pay over the year is about £101,306. None of those figures are unreasonable in themselves: the issue arises only when a deduction is taken without disclosure.

Running your own payslip check

The reconciliation you should run every time you receive a payslip has four steps.

Step 1. Confirm the assignment rate. Your KID and your payslip (or a supporting remittance statement) should state the gross rate the umbrella received for the period. If the umbrella will not disclose this figure, stop there and request it in writing. You cannot audit anything without the starting number.

Step 2. Check the above-the-line deductions. Assignment rate minus employer NIC minus Apprenticeship Levy minus margin should equal gross pay (including any rolled-up holiday element). Use the 2026/27 employer NIC formula (15% on annualised earnings above £5,000) to verify the NIC figure. The margin should match the fixed figure in your KID. If the assignment rate minus those three items produces a figure larger than your gross pay, the umbrella is taking an undisclosed deduction.

Step 3. Check the PAYE deductions. Your income tax should match your tax code and the 2026/27 bands. Your employee NIC should match the 8%/2% rates on the correct thresholds. If either figure is materially different from what those rates imply on your gross pay, either the umbrella has applied the wrong code or rates, or something in the gross-pay calculation is off.

Step 4. Account for holiday pay. If your contract uses rolled-up holiday pay, identify the named line on your payslip. If it uses the accrual model, confirm that leave payments appear when you take leave and that the accruing pot is disclosed. If neither model is apparent, ask the umbrella in writing to explain how holiday pay is handled and where it sits in the reconciliation.

An umbrella accredited by the FCSA or Professional Passport is independently audited against these transparency standards and should be able to produce a full reconciliation on request without difficulty. If yours cannot, that itself is informative.

Red flags for skimming and non-compliance

Most umbrella workers will never encounter deliberate skimming. The more common problem is opacity: a payslip that shows only gross pay and net pay with no breakdown of the above-the-line deductions, making it impossible to verify whether the figures are correct. Even unintentional opacity is a problem because it prevents you from catching errors.

Deliberate non-compliance takes several forms. The clearest red flags are:

  • The umbrella cannot or will not state the assignment rate it receives from the agency or client
  • The assignment rate disclosed in your KID does not match the rate on your payslip or remittance statement
  • The gap between the assignment rate and your gross pay is larger than employer NIC, the Apprenticeship Levy and the stated margin combined
  • The margin on your payslip is a different figure from the margin in your KID
  • Holiday pay is deducted from the assignment rate (implied by the rate at which gross pay is set) but does not appear as a named line and is never paid when you take leave
  • The umbrella quotes a net take-home figure that is materially higher than the compliant maths produces for the assignment rate

That last flag is the most important. If a compliant umbrella on a £450 per day rate leaves a higher-rate contractor with roughly £1,333 per week net, as in the worked example above, an umbrella quoting £1,600 or more for the same rate without a clear and verifiable explanation is not delivering more value from the same money. It is almost certainly achieving the higher number by failing to remit PAYE and NIC correctly, by routing part of the payment through a structure that avoids income tax, or by some combination of the two.

HMRC is explicit on this point: where a worker receives income through a tax-avoidance arrangement, the worker bears the primary liability for the unpaid tax. The umbrella, the agency and the end client may also face liability (particularly since the April 2026 JSL reform, which is covered below), but HMRC's recovery action typically begins with the worker because they are the person who received the benefit. The fact that the umbrella, the agency or a financial intermediary assured you the arrangement was legal does not protect you.

The April 2026 JSL reform and what it means for payslip compliance

From 6 April 2026, Finance Act 2026 s.24 inserted new Chapter 11 (ss.61Y to 61Z2) into ITEPA 2003 Part 2. The reform makes the recruitment agency that contracts with the end client, or the end client itself where there is no agency in the chain, jointly and severally liable for any PAYE and NIC an umbrella fails to remit. The umbrella remains the legal employer and the employment relationship does not move to the agency: what changes is the reach of HMRC's recovery powers up the supply chain.

The practical effect is that agencies now face direct financial exposure if they use non-compliant umbrellas, which has substantially tightened preferred-supplier-list controls across the sector. For a contractor, this means the umbrella you are placed through is increasingly likely to be one the agency has vetted for compliance, because the agency's own liability depends on it. That does not eliminate the need to run your own payslip check, but it does mean the baseline compliance level in the market has moved upward.

The reform is a tax-compliance measure, not a full regulatory framework for umbrella companies. Separate umbrella regulation is expected in due course but was not in force at the time this guide was written. Until it is, the FCSA and Professional Passport accreditation schemes remain the best proxy for compliance standards.

Inside IR35 umbrella vs limited company: the payslip perspective

A contractor working an inside-IR35 engagement through a limited company faces a different but related set of deductions. Under the Chapter 10 off-payroll rules, the fee-payer (usually the agency) operates PAYE on the payment to the PSC, treating it as a deemed direct payment: the fee-payer deducts income tax and employee NIC and pays employer NIC on top, before passing the net to the limited company. There is no 5% administrative allowance under Chapter 10, as that was abolished when off-payroll working expanded to the private sector in 2021.

For a genuinely inside-IR35 engagement with no outside work alongside it, the umbrella is often the simpler route: no company accounts, no year-end filing, no director salary and dividend split to manage. The umbrella-versus-limited-company decision for inside-IR35 work turns on whether the contractor has other outside-IR35 engagements, plans to retain profits for pension purposes, or values the company structure for longer-term planning. For a full comparison, the guide on limited company versus umbrella contracting works through both scenarios with the 2026/27 figures. The IR35 status review service covers both the status question and the engagement structure if you are uncertain which route applies to you.

Choosing a compliant umbrella

The payslip checks above are easier with a compliant umbrella because a compliant umbrella will volunteer the information rather than making you extract it. The practical markers of compliance are straightforward: a KID issued before the assignment starts, a stated fixed margin, the assignment rate on your payslip or remittance, and clear FCSA or Professional Passport accreditation.

If your current umbrella fails two or more of the red-flag tests above, the appropriate step is to request a written reconciliation in the first instance, then if that is not satisfactory to move to an accredited alternative. The April 2026 JSL reform means agencies have a strong incentive to support that move, since their preferred-supplier-list obligations now carry direct financial risk. You can also report a non-compliant umbrella to HMRC via the Tax Avoidance Reporting page.

If you are at the point of deciding whether to stay with an umbrella or move to a limited company for a new engagement, whether to switch umbrella providers, or how the IR35 status of your engagement should affect the structure decision, our contractor accountancy services cover all three. We work exclusively with contractors, and the payslip reconciliation questions above are the kind of thing we field regularly.