Business tax calculators

Compare trading as a sole trader with running a limited company, and check whether the VAT Flat Rate Scheme is worth joining.

Sole trader vs limited company calculator Compare both routes on the same profit, with the 2026/27 dividend rates and the traps that most comparisons leave out.
VAT Flat Rate Scheme calculator Work out whether the Flat Rate Scheme actually saves you money, and whether the limited cost trader rule catches you.

Guides

Should I go limited in 2026/27? The 2026/27 dividend rise and 15% employer National Insurance have changed the answer. When a limited company still pays, and when staying a sole trader is cheaper.

Other calculators

Salary and tax calculators — Work out take-home pay, the tax on a company car and what a redundancy package is worth after tax, for the 2026/27 tax year.
Property tax calculators — Stamp duty across England, Scotland and Wales, plus Capital Gains Tax when you sell a property that is not your main home.
Mortgage calculators — See what overpaying saves you and how much you could realistically borrow, with the assumptions shown rather than hidden.