Corporation tax calculator

Marginal relief, short periods, straddling financial years and associated companies — computed by the same engine WrenTax files with.

Accounting period
Dates and taxable profits for the period.
Corporation tax due
Effective rate 22.75% of taxable profits.

£22,750.00

Includes £2,250.00 marginal relief.

Financial yearDaysProfitsRateTax
FY2025365£100,000.0025% − MR£22,750.00

Covers straightforward cases only: no reliefs, losses, distributions or ring-fence profits. Rates verified through FY2026. Not tax advice.