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The short version
An umbrella company employs you and runs your payroll. You work on site, but on paper you're an employee of the umbrella. Your pay comes through them after tax, NI and their margin are taken off. Some umbrellas are legitimate and do a decent job. Others are skimming your pay, pocketing your holiday money, or running outright fraud. The difference between a good one and a bad one can cost you thousands a year -- and from April 2026, the rules are changing hard.
What an umbrella company actually is
An umbrella company sits between you and the agency (or end client). Instead of being self-employed and invoicing for your work, the umbrella employs you. You become their employee. They pay you through PAYE, deducting income tax, employee NI, and their own margin before the money reaches your bank account.
The chain typically looks like this:
End client (the site) → Agency → Umbrella company → You
The end client pays the agency. The agency pays the umbrella. The umbrella pays you -- minus tax, NI, employer's NI, pension contributions, and their fee.
You get a payslip, you're technically employed, and your tax is handled. That's the theory.
When an umbrella makes sense
There are legitimate reasons you might end up in an umbrella:
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Inside IR35 engagements. If your engagement is determined to be inside IR35 (see 3.2), working through a PSC offers little tax advantage. An umbrella gives you a PAYE route without the admin of running a limited company for an inside-IR35 contract.
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Short-term or irregular work. If you're moving between agencies and sites frequently, an umbrella handles the payroll without you needing to set up PAYE yourself.
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The agency requires it. Many agencies won't pay you directly and insist you go through either their own payroll or a named umbrella. Whether that's legitimate or a red flag depends on the circumstances (more on this below).
A compliant umbrella charges a transparent weekly margin -- typically around £20--£30 per week -- for running your payroll, handling your tax, and providing you with employment rights like holiday pay and workplace pension contributions.
What a compliant umbrella should look like
If the umbrella is doing things properly, you should see all of the following:
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A clear employment contract making you their employee
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A Key Information Document (KID) before you agree to anything -- this must show the assignment rate the agency pays the umbrella, every deduction taken (employer's NI, employee's NI, income tax, pension, apprenticeship levy, umbrella margin), and your expected take-home pay
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A detailed payslip every pay period showing every line item separately -- gross pay, employer's NI, employee's NI, tax, pension, umbrella fee, and net pay
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Holiday pay -- either paid when you take leave, or accrued and shown as a separate, itemised line if rolled up (see 3.3 for when that's legal)
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Auto-enrolment pension -- the umbrella is your employer, so they have to enrol you and make minimum employer contributions
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No fees -- the margin should be the margin, clearly stated, and nothing else should be disappearing from your pay that isn't explained
If any of that is missing, opaque, or doesn't add up -- you have a problem.
The Key Information Document (KID)
Since April 2020, any agency placing you through an umbrella must give you a KID before you agree to the engagement. This isn't optional. It's a legal requirement under the Conduct of Employment Agencies and Employment Businesses Regulations 2003 (as amended).
The KID must show:
- The name of the umbrella company and who your actual employer will be
- The expected or minimum assignment rate the agency pays the umbrella
- All deductions from that rate required by law (employer's NI, apprenticeship levy, etc.)
- Any other deductions (umbrella fee/margin, and how it's calculated)
- Your expected or minimum rate of pay
- Details of any fees you'll be charged for goods or services
- Holiday entitlement and pay
- A representative example pay illustration showing how deductions affect your take-home
If the agency doesn't give you a KID, that's a breach of the Conduct Regulations. You can report it to the Employment Agency Standards Inspectorate (EAS). If the KID doesn't match your actual payslips once you start working, that's a red flag.
The skims, scams and predatory practices
This is where it gets ugly. The umbrella company market is largely unregulated. There is currently no licensing requirement, no mandatory accreditation, and the EAS does not directly regulate umbrella companies -- only the agencies that supply workers to them. That gap has been exploited ruthlessly.
Here are the most common ways workers get ripped off:
1. Salary skimming -- margin on top of the stated fee
Some umbrellas charge a visible weekly margin (say £25) but also skim additional amounts from your pay, disguised within the employer's NI or other deduction lines on your payslip. If you can't reconcile the numbers -- if the gross the agency pays the umbrella minus the legitimate deductions doesn't equal what you're getting plus the stated margin -- something is being taken.
2. Pocketing holiday pay on exit
When you leave an umbrella, you're owed any accrued but untaken holiday pay. Some umbrellas deliberately delay paying this out -- or have contract terms that push the payout beyond three months after your leaving date, which conveniently puts you past the tribunal claim deadline. By the time you realise, it's too late to claim.
An umbrella withheld £2,865.50 in holiday pay from a single contractor in one documented case, and the worker had to fight to get it back.
3. Rolling up holiday pay without telling you -- or doing it wrong
Some umbrellas roll holiday pay into your hourly rate but don't itemise it on your payslip. Others calculate it incorrectly. If it's not shown as a separate line, there's no evidence it was ever paid -- and if you're not an irregular hours worker, the rolled-up method may not even be lawful for your engagement (see 3.3).
4. Deducting employer's NI from your pay
This is a big one. Employer's NI (15% above the £5,000 secondary threshold) is the umbrella company's cost as your employer. It should come out of the assignment rate the agency pays them -- not out of your pay. But some umbrellas structure things so that the employer's NI effectively reduces your take-home, because the assignment rate is set to include it and your "gross pay" is calculated after it's been removed. The KID should make this visible -- but only if you read it carefully.
5. Tax avoidance schemes disguised as umbrellas
Some operations call themselves umbrella companies but pay you partly through "expenses," loans, or other mechanisms designed to reduce the tax paid. These are not legitimate umbrella arrangements -- they're disguised remuneration schemes. HMRC estimates approximately £500 million was lost to these schemes in 2022/23, almost all facilitated through umbrella companies. If your take-home looks too good to be true, it almost certainly is. And when HMRC catches up, it's you who gets the tax bill, not the umbrella.
6. Mini umbrella company (MUC) fraud
This involves organised groups splitting one umbrella into dozens of small companies, each employing a handful of workers, to fraudulently claim small business reliefs like the Employment Allowance and the VAT Flat Rate Scheme. In July 2025, HMRC secured a major Upper Tier Tribunal ruling confirming that the MUC model was fraudulent. HMRC is now actively writing to agencies telling them to check their supply chains and remove MUCs.
Workers caught in a MUC arrangement may find themselves moved between companies without being told, with inconsistent or missing payslips and tax records.
7. Forcing you onto a specific umbrella
Some agencies insist you use a particular umbrella -- often one they have a commercial relationship with (i.e. they get a kickback). Under the Conduct Regulations, an agency cannot make the offer of work conditional on you using a specific umbrella. If they do, you can report it to the EAS.
What's changing -- April 2026
This is the biggest shift in the umbrella market in years.
Joint and several liability for PAYE (from 6 April 2026)
New legislation will make recruitment agencies (or end clients where there's no agency) jointly and severally liable for PAYE income tax and Class 1 NI that an umbrella company fails to pay to HMRC.
In plain terms: if your umbrella doesn't pay the tax it's supposed to, HMRC can go after the agency. And if there's no agency, they can go after the end client.
This is designed to kill the model where dodgy umbrellas collect tax from your wages, pocket it, and disappear. From April 2026, the agency has skin in the game -- and that means agencies will either vet their umbrella partners much harder or stop using them altogether and run payroll in-house.
Fair Work Agency (from 7 April 2026)
The Employment Rights Act 2025 creates the Fair Work Agency, which will have enforcement powers covering umbrella companies -- specifically ensuring workers get the correct statutory entitlements and rights. This fills the gap where the EAS currently can't act directly against umbrellas.
What this means for you: the environment is tightening. Compliant umbrellas will survive. Non-compliant ones will either clean up or get caught. But during the transition, workers need to stay sharp -- there may be umbrellas trying to extract maximum profit before the rules bite.
How to check if your umbrella is legitimate
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Did you get a KID before you started? If not, the agency has already breached the rules.
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Do your payslips make sense? Can you trace the assignment rate the agency pays, through the deductions, to your net pay? If the numbers don't add up, something is being taken.
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Is your holiday pay visible? It should be a separate, itemised line on your payslip -- not in your rate with no paper trail.
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Is the umbrella's margin clearly stated? It should be a fixed, transparent weekly or monthly amount. If there are mystery deductions labelled vaguely, challenge them.
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Are they offering suspiciously high take-home pay? If your take-home through one umbrella is significantly higher than through another on the same gross rate, the first one is probably running a scheme that reduces tax -- and the liability will land on you when HMRC catches up.
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Check for accreditation. The Freelancer and Contractor Services Association (FCSA) accredits compliant umbrella companies. It's not a guarantee, but it's better than nothing. If the umbrella isn't FCSA-accredited or doesn't appear on any reputable compliance body's list, ask why.
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Check Companies House. Is the umbrella a real, established company? How long have they been trading? Are their accounts filed? Directors listed? If it's a company incorporated last month with no history, walk away.
What to do if something is wrong
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Raise it with the umbrella first, in writing. Ask for a breakdown of every deduction on your payslip and how it maps to the assignment rate. Keep the response.
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Raise it with your agency. They have obligations under the Conduct Regulations and, from April 2026, direct liability for PAYE compliance. They have a reason to care.
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Report the agency to the EAS. The Employment Agency Standards Inspectorate can investigate if the agency is forcing you onto a specific umbrella, failing to provide a KID, or not passing payment through properly. Use the pay and work rights complaints form on GOV.UK or call ACAS on 0300 123 1100.
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Report tax avoidance schemes to HMRC. If you believe the umbrella is running a disguised remuneration scheme or MUC fraud, report it. HMRC has a specific reporting route for this.
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Claim unpaid holiday pay. If the umbrella owes you holiday pay on exit and won't pay, you have three months less one day to bring a tribunal claim. Don't let them run down the clock (see 3.3).
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Talk to ACAS. Free, confidential, and they deal with umbrella company complaints. 0300 123 1100.
What to do next
- Check whether you received a Key Information Document (KID) before you started -- if not, the agency has breached the rules.
- Go through your payslips line by line and check every deduction adds up against the assignment rate.
- Make sure your holiday pay is shown as a separate, itemised line on your payslip.
- Check whether your umbrella is FCSA-accredited and look them up on Companies House.
- If your take-home pay looks suspiciously high, question it -- you may be in a tax avoidance scheme where the liability will land on you.
Sources
- Conduct of Employment Agencies and Employment Businesses Regulations 2003 (as amended) -- Key Information Document requirements
- Income Tax (Earnings and Pensions) Act 2003, Part 2 -- agency workers and PAYE
- Draft Finance Bill 2025--26, new Chapter 11 to ITEPA 2003 Part 2 -- joint and several liability for umbrella company PAYE (from 6 April 2026)
- HMRC guidance: PAYE rules for labour supply chains that include umbrella companies from 6 April 2026 (GOV.UK)
- HMRC guidance: Key information document -- guidance for agency workers paid through umbrella companies (GOV.UK)
- HMRC guidance: Mini umbrella company fraud (GOV.UK)
- Employment Agency Standards Inspectorate (EAS) -- GOV.UK complaints process
- Employment Rights Act 2025 -- Fair Work Agency provisions
- ACAS response: Tackling non-compliance in the umbrella company market (August 2023)
- Elphysic Limited and others v HMRC -- Upper Tier Tribunal -- MUC fraud ruling
- HMRC estimate: at least 275,000 workers engaged through non-compliant umbrella companies; ~£500 million lost to disguised remuneration schemes (2022/23)
This guide is for information only. It is not legal or tax advice. If you need advice on your specific situation, speak to ACAS, a union, an accountant, or a solicitor who deals with employment or tax law. Do not use this page as a legal or tax defence.
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