Free calculators for UK business owners
Instant answers to the numbers you keep wondering about, using 2026/27 rates. No sign-up, and each one explains the rule behind the result.
Bookkeeping cost calculator
See your exact monthly bookkeeping price and buy online.
£15 / hour
Sole trader tax calculator
Income tax, Class 4 NIC and take-home on your self-employed profit.
2026/27
Corporation Tax calculator
Corporation Tax with marginal relief for any profit level.
2026/27
Director salary and dividend calculator
Compare limited company take-home with sole trader take-home.
2026/27
VAT calculator
Add or remove UK VAT at 20%, 5% or 0% in one step.
2026/27
Mileage allowance calculator
Business mileage claims at HMRC approved rates.
2026/27
Making Tax Digital checker
Find out if and when MTD for Income Tax applies to you.
2026/27
Late payment interest calculator
Statutory interest and compensation on overdue business invoices.
2026/27
Rates last checked November 2026. These tools give estimates for general information. They are not tax advice.
Your books, sorted, starting today.
Get an exact price in about a minute and pay securely online.