Umbrella company reform from April 2026: What joint and several liability means for contractors, and how to check the umbrella you are offered
On 6 April 2026 the rules on who answers for a contractor's tax changed. Since that date, where an umbrella company employs a worker and fails to pay over the PAYE and National Insurance it deducted, HMRC can recover the shortfall from the recruitment agency that placed the worker, or from the end client where there is no agency. HMRC's own guidance on the new PAYE rules for labour supply chains, first published on 17 September 2025 and updated on 19 June 2026, puts it plainly: the agency or end client is responsible for making sure PAYE is operated correctly, and HMRC can recover any underpayment from them.
The scale of the problem is in HMRC's policy paper of 30 October 2024. Umbrella companies engaged at least 700,000 workers in 2022 to 2023. At least 275,000 of them, "likely significantly more" in HMRC's words, were engaged at some point that year by umbrellas that failed to comply with their tax obligations, and £500 million was lost to disguised remuneration schemes in the same year, almost all of it through umbrellas.
If you are an employed professional taking a first contract through an agency, an umbrella is very likely to be the vehicle you are offered. This post explains what one is, what joint and several liability changes, how to read the payslip, what £500 a day actually pays, and how to check the umbrella before you sign.
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What an umbrella company is
GOV.UK's guidance for workers, last updated 17 September 2025, describes an umbrella company as a business often used by recruitment agencies to pay temporary workers: it employs you and pays your wages through PAYE. You do the work for the end client, the agency invoices the client, the agency pays the umbrella an assignment rate, and the umbrella pays you as its employee after deducting its costs and your tax.
The umbrella is therefore your legal employer for the assignment. For an employed professional that means a second PAYE employment alongside the main job, not self-employment: tax code, National Insurance and pension auto-enrolment all run through the umbrella's payroll.
What joint and several liability means
Before April 2026 the umbrella alone was responsible for operating PAYE. If it deducted tax and disappeared without paying it over, HMRC's only route was the umbrella itself, which by then often had no assets. The reform, introduced through the Finance Bill 2025 to 2026 and described by KPMG in its commentary of 11 December 2025, makes the umbrella and a "relevant party" jointly and severally liable for the PAYE the umbrella should have paid.
The relevant party is usually the recruitment agency that contracts directly with the end client. It becomes the end client instead where the client contracts with the umbrella directly, where the agency is connected to the umbrella, or where the agency is not UK resident. KPMG's note is blunt about the design: there is no reasonable-excuse defence and no appeal against the liability for the relevant party, even where the umbrella supplied fraudulent information. Commentary in Tax Adviser magazine describes the mechanism as a new Chapter 11 of Part 2 of the Income Tax (Earnings and Pensions) Act 2003, with parallel regulations for National Insurance.
The definition of an umbrella is wide. Grant Thornton's briefing of 2 April 2026 notes it covers any business supplying labour under a contract of employment, which may catch employers of record that would not describe themselves as umbrellas. The umbrella still has the primary duty to operate PAYE; the change is that someone else now stands behind it.
The umbrella market HMRC is targeting
What it changes for the contractor
The worker is not the liable party. The rule sits between the umbrella, the agency and the client, and its purpose is to make agencies police the umbrellas they use. FCSA, the umbrella industry's compliance body, wrote on 27 July 2026 that agencies are rationalising their provider lists and demanding payroll evidence, and Grant Thornton's advice to clients is to map supply chains, review payslips and reconcile HMRC remittances.
For a contractor the effect is indirect but real. Agencies now have a financial reason to steer you towards a short list of vetted umbrellas and to refuse one you bring yourself. The reform reduces the chance of being paid through a scheme; it does not remove your interest in checking.
"The assignment rate is not your pay. It is the budget from which your pay, the umbrella's margin and the employer's costs all have to come."
How to read an umbrella payslip
The most common confusion is the gap between the rate the agency quoted and the gross pay on the payslip. GOV.UK's worker guidance lists what the umbrella deducts from the assignment rate before it reaches your gross pay: the umbrella's operating costs, usually called the margin; employer National Insurance; the employer workplace pension contribution; holiday pay; and the Apprenticeship Levy where it applies. Only after those come off is your gross pay calculated, and only then are income tax, employee National Insurance and your own pension contribution deducted.
The employer costs are set by the 2026 to 2027 rates on GOV.UK. Employer National Insurance is 15% on earnings above the secondary threshold of £5,000 a year, or £417 a month. The Apprenticeship Levy is 0.5% of the pay bill, with a £15,000 annual allowance, which is why large umbrellas pass it on and small ones may not. Holiday pay for irregular-hours workers accrues at 12.07% of hours worked, and where it is rolled up into each payslip GOV.UK's guidance of 1 April 2024 requires it to be shown as a separate line. GOV.UK also says the agency must give you a key information document before you accept the work, setting out the umbrella, the minimum assignment rate, the deductions and your minimum gross pay.
Worked example: £500 a day through a compliant umbrella
Assumptions: 20 working days in the month, so an assignment value of £10,000; a margin of £100 a month; a standard 1257L tax code with no other income; employer NI at 15% above £417 a month; Apprenticeship Levy at 0.5%; holiday pay rolled up at 12.07%; pension opted out to keep the arithmetic simple. Take the £100 margin off £10,000, leaving £9,900. That has to cover gross pay plus 15% employer NI above £417 plus 0.5% levy, which solves to gross pay of about £8,626, employer NI of about £1,231 and levy of about £43. The gross includes roughly £929 of rolled-up holiday pay. From it, income tax of about £2,403 and employee NI of about £340 are deducted.
Net pay of roughly £5,880 for the month, about 59% of the £10,000 assignment value. Employment costs and margin absorb about £1,374, or 13.7%, before your own tax starts.
The example annualises to about £103,500 gross, above the £100,000 point where the personal allowance tapers, so a full year would be slightly worse than twelve times this month. If this is a second job alongside a salary, the allowance is already used and the whole gross is taxed at 40% or 45%: see how employed and self-employed tax work together.
Warning signs of a non-compliant umbrella
HMRC's payslip guidance for umbrella workers, updated 3 December 2025, lists the signs that an umbrella may be running a tax avoidance scheme. Extra payments arriving in your bank account beyond the net pay on the payslip. Payments described as loans, annuities, bonuses, profit shares or fiduciary receipts. Payments not processed through PAYE. An unusually high umbrella fee. Deductions grouped together on the payslip so that the true tax and National Insurance cannot be seen.
HMRC's guidance for agencies, also from 17 September 2025, adds the signs seen from the other side of the chain: an umbrella that keeps changing so that key information documents have to be reissued, a mismatch between the employer's name on that document and on the payslip, and frequent changes to the PAYE reference number.
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Two GOV.UK resources do most of the work. The first is the "Work out pay from an umbrella company" tool, updated on 6 April 2026 for the current tax year. It takes the assignment rate, the pay frequency and the tax year and returns an estimate of gross and net pay with each deduction shown, so that you can compare it line by line with the umbrella's illustration and later with the real payslip.
The second is HMRC's current list of named tax avoidance schemes, promoters, enablers and suppliers, last updated on 10 September 2026 and running to several hundred entries. HMRC tells agencies to check every umbrella against it and stop using any that appear; a contractor can run the same check in a minute. A softer third check is the FCSA members register, which FCSA itself calls a baseline rather than a substitute for due diligence.
The checklist before you sign
Umbrella checklist
What changes for an employed professional taking a first side contract
If you are taking a short agency contract around a job, three things follow. First, you will have two PAYE employments, so check the tax code on the first umbrella payslip: a second personal-allowance code means tax is being under-deducted and a bill will follow. Second, the employer costs come out of the assignment rate, so a £500 rate is worth around 13 to 14% less before your own tax, as the worked example shows. Negotiate knowing that, and compare the rate with the benchmarks in the 2026 day rate guide.
Third, the agency now carries the tax risk of the umbrella it recommends, which gives you a reasonable question before you sign: which umbrellas has it vetted, and will it confirm in writing that yours is on the approved list? The route from employment to a first contract is set out in consulting on the side while employed.
The order of operations
The reform makes the party with the most information responsible for checking. It does not make the checking unnecessary. Read the key information document, run the rate through HMRC's tool, search the named schemes list, and read the first payslip line by line. Twenty minutes before the first invoice is cheaper than a tax enquiry after the last one.
Related reading
Freelance day rates in the UK, 2026: The benchmarks by sector, the inside versus outside IR35 gap, and how to set yours
How to price your first freelance or consulting work in the UK
How to start consulting on the side while employed: A UK guide for professionals
How to turn professional skills into consulting income while employed
How employed and self-employed tax work together in the UK
This article is general information, not legal, financial or tax advice. The worked example uses stated assumptions and rounded figures; your own deductions will depend on your tax code, pension choices, the umbrella's margin and the days you work. Take independent advice on your own position and check the current rules and tools on GOV.UK.
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