GB · GBP · VAT

United Kingdom tax & payroll calculator guide

Use the calculators for planning, then confirm current rates, allowances, contribution rules, and effective dates with the official authority. Calculum uses the numbers you enter; it does not reproduce United Kingdom tax law.

What materially changes

Rules to separate in a United Kingdom estimate

  • PAYE uses tax codes and payroll periods, while National Insurance is calculated under separate rules.
  • Scottish income tax bands can differ from those used elsewhere in the United Kingdom.
  • Consumer prices normally include VAT, but the applicable rate and recoverability still depend on the supply.

Prices and purchases

United Kingdom: VAT

Consumer shop prices normally include VAT. Business-facing prices may be shown before VAT.

UK VAT price guidance ↗