Calculator
Inside IR35 Take-Home Calculator (Umbrella, 2026/27)
What you actually keep when an inside-IR35 day rate is paid via an umbrella. Models employer NI, apprenticeship levy, umbrella margin, and salary-sacrifice pension, the deductions most umbrella-published calculators understate.
Reviewed 27 April 2026 · 2026/27 rates verifiedYour 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 |
How umbrella take-home actually works
The biggest source of confusion in umbrella calculations is that the day rate the agency pays the umbrella is not your salary. It's the umbrella's revenue from your contract. Out of that single number, the umbrella has to fund four things before they can pay you a penny:
- Their margin: the umbrella's fee for processing your payroll. £15–£30 per week is normal for FCSA-accredited umbrellas. Anything significantly cheaper should be checked carefully, non-accredited “mini-umbrella” schemes are usually tax avoidance.
- Employer National Insurance , 15% of your gross salary above the £5,000 secondary threshold. Legally this is the employer's liability, but in umbrella context it's a pass-through cost: the umbrella has to fund it from the assignment rate, so it effectively comes out of your pay.
- Apprenticeship Levy: 0.5% of the umbrella's entire pay bill, with a £15,000 allowance. Because umbrellas employ thousands of contractors, the allowance is consumed almost immediately. The 0.5% is a pass-through on your gross. About £450 a year on a £100k assignment.
- Holiday pay: by law, 12.07% of your gross equivalent to 28 days of paid leave. This isn't a deduction in itself; it's a way of accounting for paid leave when you don't have a fixed schedule. Most umbrellas now pay it “rolled-up” (added to each week's pay) rather than “accrued” (held back).
Whatever's left after those four things becomes your gross taxable salary, which then goes through normal PAYE: personal allowance, income tax bands, employee Class 1 NI (8% / 2%), student loan, and any salary-sacrifice pension contribution.
The salary-sacrifice pension trick
One thing umbrella workers can do that regular employees can't is capture both the employee AND the employer NI saving when sacrificing salary into pension. In a normal job, sacrificing £100 into pension saves you about £28 in tax + EE NI; the employer's £15 NI saving stays with the employer. Through an umbrella, that £15 flows back to you as more total compensation, every £100 of sacrificed salary buys closer to £115 of pension. Worth ~5% more lifetime pension at the same apparent cost.
Why “effective hourly rate” matters
A £500/day rate looks like £62.50/hour, but after umbrella deductions and PAYE it's closer to £40/hour net. Compare that against perm jobs by dividing your salary by 1,650 hours (220 days × 7.5h), a £60k perm gets you £36/hour net at the same effective hours, so the £500/day umbrella beats £60k perm by about £4/hour even before pension. The crossover with limited company (outside IR35) is much higher.
For a step-by-step worked example showing every line of the umbrella deduction chain at £300/day, see our £300/day inside-IR35 umbrella worked example. The page surfaces the assignment-rate algebra that determines what fraction of the headline rate ever reaches your bank account.
Edge cases, what this calculator doesn't cover
- Non-FCSA-accredited umbrellas: “mini-umbrella” schemes promising 80%+ retention rates are typically tax avoidance and end with HMRC pursuing the contractor for unpaid tax. We model only standard FCSA-accredited umbrellas.
- Holiday pay timing: annual figures are the same for rolled-up vs accrued (assuming you take all your leave). The cash-flow difference (week-by-week) isn't modelled in v1.
- Mid-year residence changes: calculations assume a full year in one residence. Moving between Scotland and rUK mid-year requires HMRC to calculate split-year tax separately.
- Multiple concurrent assignments: assumes a single assignment from one umbrella. Multiple umbrellas in the same year stack tax codes oddly; for HMRC accuracy use the cumulative payslip view.
- Pension annual allowance taper: affects very high earners (£260k+ adjusted income); not modelled.
- Benefits in kind: most umbrella employers don't offer them, but if yours does (private medical, etc.), your real payslip will differ.
Frequently asked questions
- Why is my take-home so much lower than the day rate suggests?
- Because the day rate the agency pays the umbrella isn't your salary, it's the umbrella's revenue. Out of that they pay employer National Insurance (15% above £5,000), the apprenticeship levy (0.5%), their margin (£15–£30/week), and the cost of paying you. Only what's left becomes your gross taxable salary, which is then taxed at PAYE rates. A £500/day rate (£110,000/year assignment) typically nets out around £65,500, about 60% of the assignment.
- What's a fair umbrella margin?
- FCSA-accredited umbrellas typically charge £15–£30/week. Some charge per-payslip (e.g., £18 weekly, £25 fortnightly, £35 monthly). Margins much lower than £15/week are usually a red flag, they may be unaccredited or running tax-avoidance schemes. Margins above £30/week aren't getting you anything extra; the underlying maths is the same. Pick an FCSA member at the lower end of the range.
- Should I take rolled-up holiday pay or accrued?
- Rolled-up means the 12.07% holiday pay equivalent is added to each week's pay (so you receive it weekly, no separate holiday pay). Accrued means the umbrella holds it back and pays it when you take leave. Annual take-home is identical assuming you take all your statutory leave. Cash flow differs: rolled-up is steadier, accrued forces you to save for holiday weeks. Some umbrellas keep accrued holiday pay if you don't claim it on departure, read the contract carefully.
- Why does pension via umbrella save more than via PAYE?
- When you salary-sacrifice into pension at a regular employer, you save income tax + employee NI on the sacrificed amount. The employer NI saving (15%) goes to the employer. Through an umbrella, the umbrella's pay-bill cost is fixed (assignment minus margin), so any employer NI saving flows back to you as more total compensation. You effectively capture both savings, meaning a £100 sacrifice can buy ~£115 of pension. Standard PAYE only buys ~£100 of pension for £100 sacrificed.
- Is the apprenticeship levy really my deduction? I'm not an apprentice.
- It's not legally yours, but in practice the umbrella's pay bill is so large (thousands of contractors) that the £15,000 levy allowance is consumed within hours of the tax year, so it's effectively a 0.5% pass-through cost on your gross salary. You'll see it on the umbrella's reconciliation. It's small (£500ish a year on £100k assignment) but real.
- What if I'm inside IR35 but don't want to use an umbrella?
- The two alternatives are (a) work as a deemed employee directly through the agency's payroll, where the agency does the same employer NI / PAYE deduction the umbrella would, usually nets less because no salary-sacrifice pension benefit, OR (b) work through your own limited company but treat the income as deemed payment for IR35 purposes. The Ltd-company-with-deemed-payment route is usually worse than umbrella because you lose the salary-sacrifice pension benefit and gain admin. Most contractors inside IR35 use an umbrella.
- Does this work for short contracts (e.g., 3 months)?
- The annual figures scale linearly: a 3-month contract at £500/day, 60 days worked, gives an assignment of £30,000. Run that as the day-rate × 60 days. Personal allowance is allocated per pay period, so a short contract at the start of the tax year may have lower effective tax than this annual calculator suggests (you get more PA per pound of income). Effects average out over a full year. For multi-contract years, run each contract separately and combine.
- What about Scottish income tax bands?
- Switch the residence toggle. Scotland operates a six-band schedule (19% / 20% / 21% / 42% / 45% / 48%) instead of rUK's three. Higher-rate Scottish workers pay more income tax, at £75,000+ gross, the Higher rate is 42% in Scotland vs 40% in rUK. Employer NI, employee NI, and student loans are unchanged (those are set by Westminster).
Related calculators
Take-home pay (PAYE)
The standard PAYE deduction chain on a regular salary.
Outside IR35 (Ltd)
Detailed Ltd money flow with salary-strategy comparison.
Umbrella vs Limited
Side-by-side comparison at the same day rate.
Related guides
Inside vs outside IR35
Side-by-side comparison: financial gap, 10 dimensions, when to pick which.
How umbrella companies work
Plain-English walkthrough of the deduction chain plus FCSA / mini-umbrella warnings.
Umbrella margin explained
Typical £15–£35/week range, hidden charges to watch for, 5 questions before signing.
Reviewed: 27 April 2026 · See how we calculate · not financial advice.