Company tax
Use company type, taxable total profits, augmented profits, period length, and associated companies to calculate Corporation Tax.
UK limited company planning · 2026/27
Calculate Corporation Tax from confirmed final taxable total profits and augmented profits, then model a separate reserve distribution and the owner’s whole-Income-Tax change on its paid or due-and-payable tax date.
Enter the supported company and owner scenario to see Corporation Tax, Marginal Relief, the owner’s whole-Income-Tax change, and net dividend.
The Corporation Tax calculation uses augmented profits to select the applicable period- and associated-company-adjusted limits. A separately confirmed reserve drives the distribution scenario, while the owner allocation is passed to the same whole-Income-Tax engine used by the focused dividend calculator.
Use company type, taxable total profits, augmented profits, period length, and associated companies to calculate Corporation Tax.
Model a percentage of separately confirmed distributable reserves and the owner’s declared share of that distribution.
Show the owner’s whole-Income-Tax increase and net dividend without combining it with the company liability.
The calculation uses uk-company-tax-2026-v2, the statutory 3/200 Marginal Relief fraction, augmented profits, and the same effective-dated whole-Income-Tax engine as the focused dividend tool. Corporation Tax and owner Income Tax are reported separately. A qualified accountant or tax adviser should confirm the company type, tax base, associated-company position, reserves, and final liabilities.