Project manager contractor on £110,000

Inside-IR35 Umbrella. Inside IR35. Age 38. Pension preference: modest.

Every figure on this page is computed at build time by the same engines that power the live salary–dividend split, take-home and SIPP optimiser calculators. Inputs come from a single CSV row; outputs come from the engines. No static lookup tables, no hand-coded numbers.

Net cash

£61,771

Pension

£5,500

Effective rate

38.8%

Marginal rate

42%

Inside-IR35 take-home for a project manager contractor at £500/day

A project manager contractor on an inside-IR35 umbrella contract at £500/day, billing 220 days/year, has a gross contract value of £110,000. The umbrella deducts its fee (£1,500/yr assumed), employer National Insurance at 15% above the £5,000 Secondary Threshold, then runs the remainder through PAYE — income tax at 20% / 40% / 45% rUK bands plus employee NI at 8% / 2%.

What the contractor actually takes home: £61,771 of net cash, plus £5,500 into a pension via salary sacrifice (the only meaningful tax-saving lever inside IR35). Total deductions through the chain: £42,729 — an effective rate of 38.8% on the contract value.

For comparison, the same contractor outside IR35 — same day rate, same days, same expenses, same pension preference — would take home £67,030 of net cash plus £5,500 into a pension. That's £5,259 more in cash plus £0 more into pension per year. To match the outside-IR35 cash on this inside contract, the day rate would need to rise to £551 — that is the negotiating number.

The numbers, line by line

Day rate	£500
Contract value (220 days)	£110,000
Inside-IR35 net cash	£61,771
Inside-IR35 pension	£5,500
Outside-IR35 net cash	£67,030
Outside-IR35 pension	£5,500
Cost of being inside IR35 (net wealth)	£5,259
Break-even outside-IR35 day rate	£551

Why this scenario is different

Compared to the closest peer profile — Software contractor at £110,000 — this scenario sits £0 higher on gross income. That moves net cash by +£0, the pension contribution by +£0, and the effective rate by +0%. The effective rate moves only modestly — both scenarios sit inside the same binding tax band. The break-even outside-IR35 day rate moves from £551 to £551 per day.

Questions this scenario raises

Why does the page link to specific other professions?

The five linked pages at the bottom are computed by a similarity metric over (profession, income, structure, age band) — the closest five neighbours in that space, not the same five pages every row links to. The aim is a genuine cross-link graph rather than a star pattern that search engines correctly read as a pSEO signal.

Why does the umbrella deduct employer NI before paying me?

Because the umbrella is your legal employer for tax purposes inside IR35. The contract rate paid to the umbrella covers the umbrella's employer-side costs first (employer NI at 15% above £5,000, plus its own margin / fee), then the residual is paid to you as a "deemed salary" through PAYE. The contractor is the economic incidence of the employer NI — it always was, but inside IR35 it is explicit on the payslip.

Does it include Scottish income tax?

No. Scotland has its own income-tax band schedule (Starter 19% / Basic 20% / Intermediate 21% / Higher 42% / Advanced 45% / Top 48% for 2026/27). National Insurance and corporation tax are still set at UK-wide rates. A Scotland-specific batch of programmatic pages is planned but is not in this batch.

What is the Personal Allowance and how is it used in this calculation?

The Personal Allowance is the first £12,570 of non-savings, non-dividend income on which no income tax is charged. It is consumed from the bottom up: salary first, then dividends. Above £100,000 of adjusted net income the allowance tapers at £1 lost for every £2 of income, fully eroded at £125,140 — producing the well-known 60% effective marginal rate inside that £25,140-wide band.

How many qualifying years do I need for the full new State Pension?

35 qualifying years for the full new State Pension. With fewer, the pension is pro-rated (1/35 per year). A minimum of 10 qualifying years is required for any new State Pension. Voluntary Class 2 (sole traders) or Class 3 (everyone else) can plug gaps in the NI record.

Methodology

Income tax, National Insurance and Corporation Tax bands taken from HMRC's 2026/27 rates and allowances tables (gov.uk/.../income-tax; corporation-tax). Pension Annual Allowance and taper rules from Finance Act 2004 / 2023. Trading allowance per ITTOIA 2005 s.783A. Voluntary Class 2 figure (£179.40/yr = £3.45/wk × 52) from HMRC voluntary NI guidance.

Style: 2026/27 tax year throughout; figures rounded to whole pounds in the user-facing prose; effective rates computed as (deductions / gross). The voice is methodological — no first person, no claimed credentials, no marketing fluff.

This page is not personalised advice; for advice regulated by the FCA, consult an adviser registered with the Financial Conduct Authority. See the full disclaimer.