Skip to content

Contractor guides

IR35 and contractor tax, explained.

Practical guides on IR35 status, off-payroll rules, limited company tax, expenses, dividends and pension planning. Written by specialist contractor accountants.

All articles

  • Umbrella vs Limited Company

    Cheapest Umbrella Company UK: Why the Margin Is the Wrong Number to Chase

    Searching for the cheapest umbrella company feels like sensible cost control, but the entire compliant market operates within a margin band of roughly £15 to £30 per week, which means the maximum saving available from chasing the cheapest option is a few hundred pounds a year. Meanwhile the arrangements that look dramatically cheaper, or that promise dramatically higher take-home pay, are almost always tax-avoidance schemes for which HMRC pursues the worker. This guide explains how umbrella margins actually work, why cheapest is the wrong question, and how to run a total-cost comparison that protects both your net pay and your tax position.

    9 min read
  • Umbrella vs Limited Company

    HMRC Umbrella Company Warning: Named Schemes, What It Means and What to Do

    HMRC maintains a live register of tax avoidance schemes and their promoters, which it updates regularly and uses to warn contractors who may have used arrangements now under investigation. This page explains what appears on that list, what a warning or nudge letter from HMRC means in practice, how to check whether your umbrella is implicated, and what steps to take if you have used a scheme, including the settlement route and the Loan Charge context.

    13 min read
  • Umbrella vs Limited Company

    Mini Umbrella Company Fraud: How to Spot It and What It Means for You

    Mini umbrella company (MUC) fraud fragments a temporary workforce across hundreds or thousands of small limited companies so that each one can abuse the Employment Allowance and the VAT Flat Rate Scheme. HMRC has been warning about the model since 2021, a BBC investigation exposed it operating inside high-profile supply chains, and from 6 April 2026 the joint and several liability rules make agencies and end clients directly exposed to the PAYE these structures fail to pay. This guide explains how the fraud works, the Companies House red flags that give it away, who carries the liability, and what to do if you suspect you are being paid through one.

    8 min read
  • IR35 Status

    Off-payroll working rules hub: everything contractors need to know

    The off-payroll working rules sit in Chapter 10 of ITEPA 2003 and shift responsibility for IR35 status from the contractor to the end client when that client is medium or large. This hub covers every aspect of the regime: what off-payroll working is, the public and private sector timelines, the small company exemption (with the updated 2025 thresholds), how the Status Determination Statement works, deemed direct payment mechanics, overseas clients, the April 2024 offset, and the self-assessment question about employment income from inside off-payroll engagements.

    13 min read
  • Umbrella vs Limited Company

    Can You Be Self-Employed and Use an Umbrella Company?

    An umbrella company employs you under a contract of employment and operates PAYE on your income. That makes you an employee for that engagement, not self-employed. The two statuses are mutually exclusive for the same piece of work. This page explains why the confusion arises, what genuine self-employment looks like, and how hybrid situations work when you run both at once.

    8 min read
  • Umbrella vs Limited Company

    Umbrella Company vs Agency PAYE: Which Employment Route Pays More?

    When you take an inside-IR35 or temporary contract, you are often offered two employed routes: an umbrella company or the agency's own PAYE payroll. Both treat you as an employee and both deduct income tax and National Insurance. But they differ in who employs you, how the employer NIC and margin interact with your rate, holiday pay treatment, pension contributions, continuity of employment across contracts, and the rights and protections you carry. This guide compares the two routes at 2026/27 rates with a worked example at £400 per day.

    10 min read
  • Umbrella vs Limited Company

    How to Verify a Compliant Umbrella Company: FCSA, SafeRec and HMRC Checks

    Choosing an umbrella and verifying one are different tasks. This page is the verification toolkit: the exact checks that prove an umbrella is operating PAYE correctly rather than merely claiming to. It covers how to read the FCSA and Professional Passport registers, what a SafeRec real-time payslip audit actually proves, how to search HMRC's published list of named tax-avoidance schemes, how to reconcile your own RTI record in the Personal Tax Account, the red flags that override every reassurance, and the practical steps if you discover you are already inside a scheme.

    10 min read
  • Umbrella vs Limited Company

    How to Choose a Compliant Umbrella Company in the UK

    Thousands of UK contractors use umbrella companies each year, and after the Finance Act 2026 reforms the compliance stakes are higher than ever for workers, agencies and end clients alike. This guide sets out the compliance-led framework for choosing an umbrella: what accreditation means, how to read your Key Information Document, why a 90%-plus take-home promise is a hard warning sign, and how the April 2026 joint and several liability change reshapes agency PSLs.

    12 min read
  • IR35 Status

    How to Challenge an Inside IR35 Determination

    Receiving an inside IR35 Status Determination Statement does not mean the matter is closed. Under ITEPA 2003 s.61T, every contractor has a formal right to challenge the determination through the client-led disagreement process. This guide covers the evidence to gather, how to write a compelling representation, what the 45-day process involves, and why blanket determinations are a strong attack line.

    12 min read
  • Limited Company Tax

    Closing Your Contractor Limited Company: MVL and Strike-Off

    Two legal routes exist for closing a solvent contractor company: voluntary strike-off (low-cost, capped at £25,000) and a Members' Voluntary Liquidation (MVL, suited to larger reserves and capital treatment). The right choice turns on reserve size, future contracting plans, and the TAAR's two-year same-trade trap, which can flip what looks like a capital gain into an income distribution.

    12 min read
  • Contractor Accounting Basics

    What Does a Contractor Accountant Cost? UK Fees Explained

    Contractor accountant fees in the UK public market typically run from around £60 to £150 a month, though the range is wide and the number alone tells you little. This guide explains what drives the price, what you should expect for your money, and why the cheapest option often costs more in the end.

    12 min read