Free tools
Free UK tax calculators
Instant answers, no sign-up. When you're ready, a qualified accountant turns the estimate into a fixed-fee plan.
Free tool
MTD start-date checker
When does Making Tax Digital for Income Tax apply to you?
You must join MTD from6 April 2027
Free tool
CIS tax refund estimator
For subcontractors with CIS deductions taken.
CIS deducted£8,000.00
Estimated tax + NI due£5,571.80
Estimated refund£2,428.20
Free tool
VAT calculator
Add or remove VAT at the 20% standard rate.
Net£1,000.00
VAT (20%)£200.00
Gross£1,200.00
Free tool
Corporation tax calculator
19% small profits rate, 25% main rate, with marginal relief.
Estimated corporation tax£17,450.00
Effective rate21.8%
Estimates only, based on standard 2025/26 UK rates and a single source of income. They are not tax advice; your actual position depends on your full circumstances and is confirmed by a qualified accountant.