Senior IT contractor on £150,000

Personal Ltd Co. Outside IR35. Age 50. Pension preference: aggressive.

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

£61,674

Pension

£60,000

Effective rate

18.9%

Marginal rate

33.8%

Step by step: how the engine arrived at the bottom line

The joint optimiser ran a grid search over (salary, pension) — salary in £100 steps from £0 to £60,000, pension in £500 steps from £0 to the £60,000 Annual Allowance — and evaluated each combination through the full tax stack. Here is the step-by-step trace that produced the optimum for a senior it contractor at £150,000 of company profit:

Salary chosen: £12,570. Sits between the £12,570 PA and the £50,270 higher-rate threshold (paying basic-rate income tax + main-band employee NI).
Employer NI on salary: £1,136 (15% above the £5,000 Secondary Threshold).
Pension chosen: £60,000 as an employer contribution — CT-deductible, no NI either side, no income tax until drawdown.
Pre-CT profit: £76,295 = company profit minus salary, minus employer NI, minus pension contribution.
Corporation tax: £16,468 (regime: marginal).
Dividend extraction: all post-CT profit paid out — £59,826.
Personal taxes: employee NI £0 on salary; income tax £0 on salary; dividend tax £10,723 on the dividend (after the £500 Dividend Allowance and stacked above salary in the band schedule).
Net cash: £61,674. Net wealth (cash + pension): £121,674.

The numbers, line by line

Optimum salary	£12,570
Optimum dividend	£59,826
Optimum pension	£60,000
Net cash (optimum)	£61,674
Net wealth (cash + pension)	£121,674
Rule-of-thumb net cash	£89,240
Rule-of-thumb net wealth	£89,240
Saving vs rule of thumb	£32,433
Effective rate on profit	18.9%
Marginal rate (next £1 dividend)	33.8%
Years to age-57 pension access	7
Annual pension contribution (this row)	£60,000
Projected pot at 57 (5% real, single-path)	£488,521
Sustainable income @ 4% SWR	£19,541/yr

Why this scenario is different

Compared to the closest peer profile — IT contractor at £150,000 — 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 optimiser shifts £0 of the extraction out of the dividend slice, and £0 out of pension contributions.

Questions this scenario raises

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 much can I put into pension this year?

The 2026/27 pension Annual Allowance is £60,000. Below £260,000 of adjusted income the full £60,000 Annual Allowance is available. Carry-forward of unused AA from the last three tax years is available subject to membership-in-each-year rules.

Does this include the High Income Child Benefit Charge?

No. HICBC is not in the engine. If you or your partner earn over £60,000 and either of you claims Child Benefit, HICBC tapers the Child Benefit at 1% for every £200 of income over £60,000, fully eroded at £80,000 (2026/27 thresholds). This adds an effective 11% marginal between £60,000 and £80,000 for a one-child household, ~22% for two children, etc.

What is the £500 Dividend Allowance and how is it used?

The first £500 of dividends in 2026/27 is taxed at 0%. It does not reduce taxable income — it sits as a 0% slice within the band schedule. So a basic-rate dividend recipient with £500 of dividends pays £0; with £600 of dividends pays 8.75% × £100 = £8.75. The £500 is consumed in band order (cheapest band first).

What does the "marginal rate" mean on this page?

It is the rate paid on the next £1 of gross income added to this scenario. For this row that figure is 33.8%. The marginal rate is always higher than the average effective rate — it is the right number for "is one more invoice worth it" decisions.

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.