Beauty therapist on £25,000

Sole Trader. Age 30. Pension preference: none.

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

£20,664

Pension

£0

Effective rate

12.3%

Marginal rate

26%

Worked example: Beauty therapist, 30, £25,000 of turnover

Picture a beauty therapist aged 30 for the 2026/27 tax year, trading as a sole trader with £25,000 of turnover. The optimisation goal for this profile is pure net cash today — the pension lever is off.

Running the engine for this exact profile:

Taxable profits after the trading-allowance choice: £23,750
Income tax: £2,236
Class 4 NI: £671
Class 2 (voluntary): £179
Net cash: £20,664 (12.3% effective on turnover)
Same turnover as a Ltd Co (no pension): £20,038 — a gap of £626 in favour of staying a sole trader

The vignette is hypothetical but the numbers are not — every figure above was produced by the same engine code that powers the live BracketMath calculators, run at build time on inputs drawn from a single CSV row.

The numbers, line by line

Turnover	£25,000
Taxable profits	£23,750
Trading allowance vs actual expenses	Actual expenses
Income tax	£2,236
Class 4 NI	£671
Class 2 NI (voluntary)	£179
Net cash (year)	£20,664
Net cash (monthly)	£1,722
Hours-equivalent at NLW (£12.21/hr)	1,692 hrs
Effective rate	12.3%
Same turnover as Ltd Co (no pension)	£20,038
Incorporate vs stay sole trader	£626 for staying sole trader

Why this scenario is different

Compared to the closest peer profile — Freelance designer at £25,000 — 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. Taxable profits change from £23,750 to £23,750 (after the trading-allowance / actual-expenses choice).

Questions this scenario raises

Where does the BracketMath engine source its rates?

Income tax / NI / CT / dividend rates come from HMRC's published 2026/27 rate tables (gov.uk/government/publications/rates-and-allowances-income-tax). Pension rules come from FA 2004 and the FCA's consumer guidance. Historical investment returns used in the Monte Carlo engine come from a 125-year UK gilt + UK equity series stored in src/data/historical-returns.json. Every constant carries a source URL in the source code.

How does the £1,000 trading allowance interact with rental income?

They are separate allowances. There is a £1,000 trading allowance for trading income and a separate £1,000 property allowance for rental income, both under FA 2017. You can claim both in the same year if you have both income streams.

Should I incorporate this sole-trader business into a Ltd Co?

At this turnover, the pure-tax saving from incorporating is only £0/year — almost certainly less than the ~£800–£1,500/yr accountancy and admin overhead of running a Ltd Co. Stay a sole trader unless turnover scales materially.

Are the numbers on this page computed live or pre-rendered?

They are pre-rendered at build time by running the BracketMath engine code against the inputs for this specific row. That means: zero JavaScript on the page for the calculation itself, the figures cannot drift if the engine is changed, and you can verify them by running the corresponding calculator with the same inputs.

Is this calculation valid for the 2027/28 tax year?

Only partially. Thresholds (PA, basic-rate, higher-rate, NI thresholds) are frozen through April 2028 per the Autumn Budget 2024. Some rates may change at the Spring 2027 Budget. The figures here are accurate for 2026/27 and will be re-run after any future Finance Act changes — check the published-date footer of this page.

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.