Free UK tax calculators for business owners
We built these to answer the questions UK business owners actually ask us: what is my real take-home pay, how much salary versus dividend, what does an extra hire cost, and how much CGT will I pay on the exit. All numbers reflect 2026/27 rates and thresholds. No email gate, no sign-up.
Salary & Dividend Optimiser
Find the most tax-efficient mix of salary and dividends for a UK limited company director. 2026/27 rates.
Take-Home Pay Calculator
Gross salary in, annual, monthly and weekly net out. 2026/27 income tax, NI, student loan and pension salary sacrifice.
Employer NI & Cost-to-Hire
Full annual employment cost across your payroll with employer NI at 15%, Employment Allowance offset, and 3% auto-enrolment pension.
Pension Contribution Optimiser
Employer pension contributions reduce corporation tax. See the real cost to your company and whether pension beats taking the same money as dividend.
R&D Tax Credit Estimator
Indicative R&D credit under the 2024 merged scheme. Drop in qualifying spend to see your estimate and whether the intensive SME rate applies.
BADR CGT Calculator
See your post-relief CGT on a business sale, your remaining lifetime allowance, and how the 2026/27 BADR rate of 18% (up from 14% in 2025/26) affects your CGT bill.
VAT Scheme Comparator
Standard vs Flat Rate — run your turnover and input VAT to find out which scheme saves you money and whether the Limited Cost Trader rule forces you to 16.5%.