Changelog
Every rate update, fix, and new calculator. Tax is a moving target, this is the log so you can see what changed and when. Spot something wrong? Get in touch.
1 May 2026
Bonus tax calculator launched
New /bonus-tax calculator works out the marginal income tax, NIC and student loan on a UK bonus, and shows the pension-sacrifice saving. 60%-trap aware.
1 May 2026
Capital Gains: structured disposal inputs
CGT now has a 'From disposal' mode with sale proceeds, acquisition cost, allowable expenses, in-year and brought-forward losses, residential-property flag (60-day reporting) and spouse-AEA toggle. Engine extended with HMRC's preserve-the-AEA rule for brought-forward losses.
1 May 2026
VAT: limited-cost trader warning
Flat Rate Scheme section now flags the 16.5% limited-cost trader rule that catches most consultants and IT contractors.
1 May 2026
Self-employed: monthly set-aside output
Self-employed result now shows what to park each month so January Self Assessment isn't a shock, plus a separate year-1 figure that includes the first payment on account.
1 May 2026
Dividend rate consistency fix
About page incorrectly listed the 2025/26 dividend rates (8.75/33.75/39.35). Updated to the 2026/27 rates the calculator actually uses (10.75/35.75/39.35).
1 May 2026
Bed-and-ISA wording clarified
ISA-vs-taxable FAQ now spells out that the 30-day share-matching rule generally doesn't bite when the rebuy lands inside the ISA wrapper.
29 April 2026
2026/27 tax year, full review
Every calculator reviewed against current HMRC, Revenue Scotland, Welsh Revenue Authority and OBR sources. Includes the BADR rate rise to 18%, Plan 5 student loans, MTD for Income Tax thresholds, and Budget 2024/2025 dividend rate changes.
15 April 2026
Pension calculator overhaul
Rebuilt around 'real cost per £1 saved'. Added relief-at-source vs net-pay vs salary-sacrifice modes, employer match, and proper higher-rate relief modelling.
10 April 2026
Guides launched
New /guides section with the 60% tax trap, salary sacrifice, and capital gains on shares. Each links to the relevant calculator.
20 March 2026
BADR rate fix
Capital Gains Tax FAQ corrected: Business Asset Disposal Relief is 18% from April 2026 (was 10%).
Director Mix, ISA-vs-taxable, savings, marriage allowance, HICBC
Five new calculators covering the trickier corners of UK personal tax. Director Mix models salary + corporation tax + dividend tax jointly.