What is an umbrella company?
An umbrella company is your employer of record for a contract assignment. Legally, you're a permanent employee of the umbrella; commercially, the umbrella charges your end client (usually via a recruitment agency) and pays you a salary out of what they receive. They handle PAYE, employer National Insurance, holiday pay, and the statutory employee benefits you'd expect from a normal employer.
Umbrellas exist for one reason: the IR35 rules made it risky for end clients to engage workers via personal service companies (Ltd companies) when the working relationship looks like employment. By inserting an umbrella between the worker and the client, the client gets the flexibility of a contractor, the worker gets PAYE-like compliance, and the umbrella takes a small margin for handling the payroll.
For inside-IR35 contracts (where HMRC would consider the relationship to be employment), umbrella is now the standard engagement route in the UK. Almost no agencies will offer a Ltd-based contract for an inside-IR35 role, the risk falls on them under the off-payroll rules.
How the deduction chain works
The agency pays the umbrella what's called the assignment rate: your day rate × days worked. From that single number, several deductions happen BEFORE you're even at the gross-salary stage that a normal employer would start from. This is where almost every online umbrella calculator gets it wrong.
Out of the assignment rate, the umbrella covers:
- Their margin: typically £15–£30/week for an FCSA-accredited umbrella.
- Employer National Insurance: 15% of your salary above £5,000 in 2026/27. This is HMRC's cut, not the umbrella's.
- Apprenticeship Levy: 0.5% of total payroll. Pretty much every umbrella is over the £3m payroll threshold so this applies.
What's left becomes your gross taxable salary. Then the normal PAYE chain runs: personal allowance → income tax → employee NI → student loans → pension contribution. What's left is your net pay.
Worked example: £500/day, 220 days
£110,000 assignment rate
- − £1,300 umbrella margin (£25/wk × 52)
- − £13,464 employer NI (15% above £5,000)
- − £474 Apprenticeship Levy (0.5%)
- = £94,762 gross taxable
- − £25,337 income tax
- − £3,906 employee NI
- ≈ £65,519 net to pocket
That's about 59.6% retentionon the assignment rate. Which is why headline £500/day starts to feel a lot smaller in your bank account by the end of the month, the deductions before PAYE knock 14% off before HMRC's normal cut even starts.
Adding pension salary sacrifice changes the picture significantly: every £1 sacrificed saves both employee NI (your portion) AND the umbrella's employer NI on that £1 (because the assignment rate is fixed, so the saved ER NI flows back to you as more salary). For a higher-rate earner, the effective marginal saving on a sacrificed £1 is around 55-60p.
Try it with your day rate
Plug in your specifics. Includes pension salary sacrifice (the single most powerful tax move available to umbrella contractors), region, student loans, and the rate-year switcher.
Your annual take-home through an umbrella
£65,519
£5,460/month · effective hourly £39.71 · you keep 59.6% of the assignment
Show full breakdown
Where the assignment rate goes
| Assignment rate (annual)£500.00/day × 220 days | £110,000.00 |
|---|---|
| Umbrella margin£25.00/week × 52 | −£1,300.00 |
| Employer NI15% on gross above £5,000 | −£13,464.29 |
| Apprenticeship Levy0.5% on gross (pass-through) | −£473.81 |
| Gross taxable salary | £94,761.90 |
| Income taxrUK bands on £82,191.90 | −£25,336.76 |
| National Insurance (employee)Class 1 EE — 8% / 2% | −£3,905.84 |
| Net annual take-home | £65,519.30 |
What umbrellas DO
- Run PAYE on your salary, you get a payslip that looks like a normal employed payslip.
- Pay employer NI to HMRC on your behalf (out of the assignment rate).
- Provide statutory employment rights: 28 days' paid holiday, statutory sick pay, statutory maternity / paternity pay, redundancy after 2 years.
- Auto-enrol you in a workplace pension (NEST or similar by default; some let you pick the provider).
- Offer salary sacrifice into pension if requested, this is the single biggest tax-saving move available to umbrella contractors.
- Handle expense reimbursement when chargeable expenses are approved by the client.
- Provide an employer reference and proof of income for mortgage/credit applications.
What umbrellas DON'T do
- Reduce your tax bill cleverly: anyone promising 80%+ retention is running a tax-avoidance scheme; HMRC pursues the contractor, not the umbrella. See the mini-umbrella section below.
- Allow tax-free travel and subsistence for most inside-IR35 contracts (Finance Act 2016 SDC test). The exception is genuinely chargeable expenses.
- Convert your inside-IR35 contract to outside-IR35 , that's about the working relationship, not the employment vehicle.
- Make your assignment rate higher: they charge against the assignment rate the agency offers, not negotiate it for you. Some umbrellas claim to "take less margin" via opaque deductions; check carefully.
- Provide professional indemnity or public liability insurancefor your contracted work, those are still your responsibility (or the agency's, depending on the contract).
How to choose an umbrella
For most contractors, the choice is between five or six FCSA-accredited providers. The headline differences are tiny, pick on the criteria below in order of importance.
- FCSA accreditation.The Freelancer & Contractor Services Association is the industry body that audits umbrella compliance. Non-FCSA umbrellas may be fine but the accreditation is the cheapest signal of not-a-tax-avoidance-scheme.
- Margin transparency.A flat £20-£30/week margin is standard. Avoid umbrellas that quote “take 98% home” or hide costs in “reconciliations” — the maths only works if they're hiding deductions.
- Pension provider quality.If you're going to use salary sacrifice (you should), the pension provider matters. Some umbrellas auto-enrol you into NEST with no choice; others (PayStream, Liberty) let you direct contributions to a SIPP of your choice.
- Holiday-pay handling. Rolled-up vs accrued (see FAQ). Both are legal post-2023 Pimlico Plumbers ruling; preference depends on whether you self-discipline with savings.
- Customer support responsiveness.The thing you'll actually notice day-to-day. A bad umbrella can mess up your tax code or fail to send a P60 on time; a good one resolves issues within 24 hours. Ask other contractors in your sector for current recommendations.
Common FCSA-accredited picks for IT contractors: PayStream, Parasol, Brookson, Giant Group, Liberty Bishop, Workwell. Margins are all in the £15-£30/week band.
The mini-umbrella warning
If an umbrella promises 80%+ take-home, it is almost certainly a tax-avoidance scheme, and HMRC will pursue YOU.
Mini-umbrella schemes work by either disguising employment income as a loan (which they claim is non-taxable, but HMRC's 2017 Loan Charge demonstrated otherwise), fragmenting your employment across many tiny companies to dodge employer NI thresholds, or using offshore structures that fail HMRC scrutiny. When the scheme collapses, and they always do, you owe the back tax PLUS interest PLUS penalties.
Real warning signs: anyone offering “90% retention” or “tax-efficient pay arrangements” or “EBT-based umbrellas”; companies based in the Isle of Man or Channel Islands; pay structures that involve “loans” or “trust distributions” instead of normal salary. None of these are legitimate.
HMRC's named-and-shamed list at gov.uk/government/publications/named-tax-avoidance-schemes is updated regularly. Check before signing with any umbrella you haven't heard of.
Umbrella vs Ltd vs PAYE
Quick comparison for someone deciding between routes:
| Route | Best for | Net at £500/day* |
|---|---|---|
| Umbrella | Inside-IR35 contracts; short-term gigs; risk-averse | ~£65,519 |
| Limited Co. | Outside-IR35 contracts; longer engagements; higher rates | ~£69,129 |
| PAYE | Permanent employment with one employer | N/A (no day rate) |
*2026/27, single applicant, no SL, rUK, £12,570 director salary on Ltd side, no pension. The Ltd advantage shrinks at very high day rates and disappears entirely if your contract is genuinely inside IR35.
For a side-by-side comparison at any day rate, see the umbrella vs limited calculator.
Frequently asked questions
- If I'm inside IR35, do I have to use an umbrella?
- No, but it's almost always the cleanest option. The alternatives are: (1) work via your Ltd with a deemed-payment calculation, which loses the dividend advantage and adds admin overhead, almost always worse than umbrella; (2) be paid PAYE directly by the agency, which a few agencies offer and which is identical to umbrella for the contractor (the agency runs the payroll instead of an external company); (3) work via the agency's own umbrella product, which is usually fine but lock-in is real. For most inside-IR35 contracts, picking your own FCSA-accredited umbrella is the best balance.
- Why does my umbrella deduct employer NI from my pay?
- Employer NI is a real cost the umbrella has to pay HMRC on the salary they pay you. The agency rate (the £/day on your contract) is structured to cover both your salary AND the employer NI, AL, and umbrella margin. So when you see employer NI as a line on your payslip, it's not the umbrella stealing, it's HMRC's cut, just transparently itemised. (Some umbrellas hide it in 'company costs' or 'reconciliation', which makes the maths look better than it is.)
- What's an Apprenticeship Levy and why do I pay it?
- 0.5% of payroll, charged to employers with annual pay bills above £3 million. Most umbrellas blow past £3m easily because they pool many contractors, so they're caught by the levy. Like employer NI, the cost gets passed through to you as part of the assignment-rate maths. It's a fixed deduction, ~£20-£30/week at typical contractor rates.
- Can I claim expenses through an umbrella?
- Mostly no, post-2016. The Finance Act 2016 introduced the Supervision, Direction, and Control (SDC) test, if your client controls how you do your work (which is the case for most inside-IR35 assignments), you can't claim travel and subsistence as tax-free expenses. The exception: chargeable expenses approved in advance by the client and charged back through the agency. These flow through the umbrella as a billable cost, not an employee expense, and don't reduce your tax bill.
- What's salary sacrifice through an umbrella?
- It's the single most powerful tax move available to umbrella contractors. You agree to sacrifice some of your gross taxable salary into a workplace pension. Because the sacrifice happens BEFORE tax and NI are calculated, you save income tax + employee NI + ALSO the employer NI portion (because the umbrella's pay-bill cost is fixed by the assignment rate, so any ER NI saving flows back to you as more total comp). Effective marginal saving on every £1 sacrificed is often 50-60% for higher-rate earners. The umbrella has to offer a salary-sacrifice scheme, most FCSA-accredited ones do.
- What's holiday pay rolled-up vs accrued?
- Two ways umbrellas handle the 28-day statutory minimum holiday. Rolled-up: holiday pay is added to each week's gross (typically as 12.07% of taxable salary), so you're paid in full each week and self-fund your time off. Accrued: the umbrella holds back ~12.07% in a holiday pot, you request leave and are paid from the pot. Rolled-up is simpler but tempts you to skip holidays (since stopping work means stopping income); accrued forces saving but creates admin friction. The Supreme Court's 2023 Pimlico Plumbers ruling clarified that rolled-up holiday pay is legal as long as it's clearly itemised separately on the payslip (lots of umbrellas were doing it badly before then).
- How much should the umbrella margin be?
- FCSA-accredited umbrellas charge £15–£30/week (PayStream, Parasol, Brookson, Giant, Liberty, Workwell are all in this range). 'Mini umbrellas' offering 80%+ retention rates with no margin are tax-avoidance schemes that end with HMRC pursuing the contractor. Above £30/week is uncompetitive unless they offer something specific (e.g., specialist support for international contractors). Between £15-£30 the differences are minor; pick on responsiveness and the quality of their pension scheme rather than saving £5/week of margin.
- Will my umbrella affect my mortgage or credit applications?
- Mostly no, umbrella payslips look like regular PAYE salary, so high-street lenders treat you as a standard employed applicant once you have 3-6 months of payslips. The catch: if you've SWITCHED from contracting via Ltd to umbrella in the last year, lenders may want to understand why (some interpret it as instability). For mortgage borrowing through the umbrella route, see our self-employed mortgage calculator.