Why your take-home isn't a slice of your day rate
The single thing most calculators hide: the rate your agency pays — the assignment rate — is not your salary. It has to cover the umbrella's costs of employing you before a penny is treated as your gross pay.
When you work inside IR35 through an umbrella, the umbrella becomes your employer. The agency pays it your assignment rate. From that single figure the umbrella must fund its own fee and the employment costs that any employer carries — then what remains becomes the gross salary that gets taxed like any job. We work strictly in that order:
Your rate × days (or hours) × weeks worked. This is the whole pot the umbrella receives for your work.
A fixed weekly or monthly fee for running your payroll. On a compliant umbrella this is the only figure that should differ between providers.
Employer's National Insurance (15% above £5,000), the Apprenticeship Levy (0.5%), and any employer pension contribution. These are lawfully met from the assignment rate, not added on top of it.
Now — and only now — do we apply your income tax, employee NI, student loan and pension exactly as your payslip would.
This is why take-home of 60–65% of the assignment rate is normal. The gap is employment costs plus your own tax and NI — not the umbrella overcharging. A figure well below that range usually means a high margin or a higher tax band, which is exactly what our comparison mode helps you isolate.
Solving for your gross pay
This is the step most provider calculators get wrong or fudge. Employer NI, the levy and employer pension all depend on the gross pay — but the gross pay is what's left after those costs. It's circular, so it has to be solved, not subtracted line by line.
With the pot fixed (assignment rate minus margin), we solve for the gross pay G that makes the books balance:
For the simple case (no pension, gross above the £5,000 threshold) this rearranges cleanly to:
When a pension or salary sacrifice is involved the relationship becomes piecewise, so we solve it numerically — the result is identical, just more robust across every combination. Worked check: a £400/day contract over 48 weeks with a £25/week margin gives a pot of £94,800, a gross of £82,727, and a take-home of about £58,539 — a 61.0% retention. You can reproduce this exactly in the calculator.
Tax, National Insurance & student loans on your gross
Once gross pay exists, the rest is standard PAYE — applied per your tax code, with the right nation's rates.
Income tax
We apply your personal allowance (the numeric part of your tax code × 10; £12,570 on the standard 1257L), then the bands for your nation. An S prefix switches to the six Scottish bands; a C prefix marks a Welsh taxpayer (Wales currently uses the same rates as England and Northern Ireland). The allowance tapers away by £1 for every £2 earned above £100,000, reaching zero at £125,140. BR, D0 and D1 codes apply a flat rate to all of the income.
Employee National Insurance
8% on earnings between £12,570 and £50,270, then 2% above. A salary sacrifice reduces the pay this is charged on; a standard pension deduction does not.
Student loans
9% of earnings above your plan's threshold for Plans 1, 2, 4 and 5; 6% above £21,000 for a Postgraduate Loan. If you hold an undergraduate plan and a postgraduate loan they stack, so the deductions are calculated separately and added together.
Pension
Under auto-enrolment we model the standard 8% of qualifying earnings — 5% from you, 3% from the employer (met from the assignment rate). Under salary sacrifice you exchange gross salary for an employer pension contribution, which lowers your income tax and NI; a compliant umbrella passes the resulting employer-NI saving back into your pension, and our toggle lets you see the difference if it doesn't. Pension treatment varies between providers, so we present these figures as indicative — confirm the exact scheme mechanics with your umbrella.
Figures are annualised estimates for guidance. Your payslip is worked out per pay period (week or month), so a large single month or an irregular pattern can shift the numbers slightly. Always confirm with your umbrella before signing a contract.
Every 2026/27 rate we use
For the tax year running 6 April 2026 to 5 April 2027. Each figure is verified against the official source linked at the foot of this page.
| Item | 2026/27 |
|---|---|
| Employer NI rate | 15% |
| Secondary (employer) threshold | £5,000 |
| Apprenticeship Levy | 0.5% |
| Employer pension (auto-enrolment) | 3% |
| Band | Range | Rate |
|---|---|---|
| Personal allowance | up to £12,570 | 0% |
| Basic | to £50,270 | 20% |
| Higher | to £125,140 | 40% |
| Additional | over £125,140 | 45% |
| Band | Range (gross) | Rate |
|---|---|---|
| Starter | £12,571–£16,537 | 19% |
| Basic | £16,538–£29,526 | 20% |
| Intermediate | £29,527–£43,662 | 21% |
| Higher | £43,663–£75,000 | 42% |
| Advanced | £75,001–£125,140 | 45% |
| Top | over £125,140 | 48% |
| Item | Threshold | Rate |
|---|---|---|
| Employee NI (main) | £12,570–£50,270 | 8% |
| Employee NI (upper) | over £50,270 | 2% |
| Student loan Plan 1 | £26,900 | 9% |
| Student loan Plan 2 | £29,385 | 9% |
| Student loan Plan 4 (Scotland) | £33,795 | 9% |
| Student loan Plan 5 | £25,000 | 9% |
| Postgraduate Loan | £21,000 | 6% |
| Holiday pay | — | 12.07% |
| National Living Wage (21+) | — | £12.71/hr |
The April 2026 rules: joint & several liability
The biggest change to umbrella working in years took effect on 6 April 2026. It doesn't change your take-home maths, but it changes who is on the hook if an umbrella behaves badly — and that's good news for contractors.
Until now, when an umbrella failed to pay the PAYE and National Insurance it owed, HMRC's recovery options were focused on the umbrella itself — which was little comfort when a rogue provider simply vanished or went insolvent. The scale of the problem was large: HMRC estimated that of around 700,000 umbrella workers in 2022–23, at least 275,000 were engaged by providers that failed to meet their tax obligations, with roughly £500m lost to disguised-remuneration schemes in that year alone.
From 6 April 2026, under a new Chapter 11 of Part 2 of ITEPA 2003, HMRC can recover unpaid PAYE, NICs and the Apprenticeship Levy from another "relevant party" higher up the supply chain, on a joint and several basis. In practice:
- The umbrella remains your employer and is still primarily responsible for operating PAYE.
- Where a UK recruitment agency is in the chain, that agency is generally the party HMRC can pursue for any shortfall. With multiple agencies, it's the one closest to the end client.
- If there's no agency — or the agency is connected to the umbrella — the end client picks up the liability.
What it means for you: agencies and clients now have a direct financial stake in placing you only with compliant umbrellas, so expect more scrutiny of providers — and far less tolerance for the schemes that promise inflated take-home. A separate, full regulatory regime for umbrellas is still expected in 2027.
How to spot a compliant umbrella
If a calculator or provider promises take-home much above the normal 60–65% range, treat it as a red flag — not a bargain. Compliant umbrellas all run the same PAYE maths, so genuine differences come down to margin alone.
- Accreditation. Look for FCSA or Professional Passport membership, and ideally SafeRec or veriPAYE payslip auditing — independent checks that the right tax is actually being paid.
- Take-home in the normal range. 60–65% of the assignment rate for most earners. Anything markedly higher implies disguised remuneration or unclaimable "expenses".
- A transparent, single margin. A clear weekly or monthly fee, with no percentage-of-pay cuts and no surprise charges to leave.
- A readable payslip. It should show the assignment rate, each employment cost, your gross, and your deductions — not bury them in a confusing "contractor statement".
- Holiday pay you can actually access. Whether rolled-up or accrued, you should be able to see it and claim it — forfeited accrued holiday is a classic warning sign.
We're independent and not paid by any umbrella to recommend it. This page is information to help you ask the right questions — it isn't financial, tax or employment advice. For your own situation, speak to a qualified accountant.
Frequently asked questions
Why is my umbrella take-home only about 60% of my day rate?+
Because the assignment rate has to cover your employer's National Insurance (15% above £5,000), the Apprenticeship Levy (0.5%), the umbrella's margin and any employer pension — before your gross pay even exists. Your own income tax and NI then come out of that gross. Added together these typically take 35–40% of the assignment rate, leaving 60–65% as take-home. It's the structure of employment costs, not the umbrella overcharging.
What is the Apprenticeship Levy and why am I paying it?+
It's a 0.5% charge on an employer's pay bill that funds apprenticeship training nationally. As your umbrella is your employer, it's met from your assignment rate even though you won't personally draw on the fund. It's a legitimate, standard deduction for umbrella workers.
Is my umbrella company compliant after the April 2026 rules?+
Since 6 April 2026, joint & several liability means your agency or end client can be pursued by HMRC for unpaid tax in the chain, so they have a strong incentive to use compliant providers. Check for FCSA or Professional Passport accreditation and independent payslip auditing (SafeRec or veriPAYE), make sure your take-home sits in the normal 60–65% range, and be wary of any provider promising significantly more.
What's the difference between rolled-up and accrued holiday pay?+
Both come from the same 12.07% of your gross. Rolled-up means it's paid to you every period alongside normal pay, so your weekly figure is higher. Accrued means it's held back and paid when you take leave. Over a full year the totals match if you take or are paid all your holiday — but accrued holiday that you can't access or that's forfeited is a red flag worth challenging.
Umbrella or limited company — which gives me more?+
If your contract is inside IR35, an umbrella is usually the practical route and a limited company gives little tax advantage. If you're genuinely outside IR35, a limited company can be more tax-efficient through a salary-and-dividends mix, but carries more admin and responsibility. We're adding a side-by-side umbrella-vs-limited comparison — for now, model the umbrella position here and speak to a contractor accountant about the limited route.
How accurate is this calculator?+
The engine uses verified 2026/27 HMRC and Scottish Government rates and matches worked examples to the pound. It produces annualised estimates; your actual payslip is calculated per pay period, so irregular months can cause small differences. Salary-sacrifice figures are indicative because scheme mechanics vary between providers. Always confirm with your umbrella before making a decision.
Do you sell my data or take commission to rank umbrellas?+
No. The calculator is free, needs no email and isn't owned by an umbrella company. Where we mention providers we tell you when a link is a partnership, and any recommendation is limited to accredited, compliant umbrellas. The numbers you see are never influenced by who pays us.
See your own numbers
Put your real rate and margin in — and compare a few umbrellas side by side while you're there.
Open the calculator →Written and maintained by Lorraine Bonney, BSc Business Psychology. Lorraine is the founder and editorial lead of Rate to Reality. She holds a First Class BSc in Business Psychology from the University of Greenwich, with a focus on workplace behaviour and how people make financial decisions.
Rate to Reality helps workers, students, pensioners and contractors understand how gross pay translates into estimated take-home pay. Every rate and threshold in the calculator is taken from official UK sources — GOV.UK for PAYE, National Insurance, student loans and employer thresholds, and gov.scot for Scottish Income Tax bands — and is re-checked against those sources at the start of each tax year.
Lorraine is not a tax adviser, accountant or payroll bureau. Rate to Reality is built for general guidance and transparency, not personalised financial, tax, legal or payroll advice.
Sources: GOV.UK (Income Tax rates and thresholds, National Insurance rates, student loan repayment thresholds, National Minimum Wage); gov.scot (Scottish Income Tax 2026–27); HMRC policy paper and draft Finance Bill 2025–26 on umbrella company joint & several liability (ITEPA 2003, Chapter 11). Rates last verified June 2026.