Worked example: Finance contractor, 38, £130,000 of company profit
Picture a finance contractor aged 38 for the 2026/27 tax year, operating through a personal Ltd Co outside IR35, with £130,000 of profit before director pay. The optimisation goal for this profile is maximum net wealth (treating £1 of pension as £1 of cash today).
Running the engine for this exact profile:
- Optimum salary: £12,570
- Optimum dividend: £45,126
- Optimum pension contribution: £60,000
- Net cash to the director: £51,935
- Net wealth (cash + pension): £111,935
- Total tax + NI through the chain: £18,065 (13.9% effective on gross profit)
- Money left on the table by the £12,570-salary rule of thumb: £30,963
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.