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FREE TOOL · 2026/27
Estimate what you'd owe on an investment disposal this tax year. Nothing is stored, nothing is sent anywhere — the maths runs in your browser.
How it works: your gain is proceeds minus cost and dealing fees. The annual exempt amount (£3,000 for 2026/27) is deducted, and the remainder is taxed at 18% for basic-rate taxpayers or 24% for higher and additional-rate taxpayers.
Want this calculated automatically across every account you hold — with your real allowances tracked all year? That's what we're building.
ESTIMATED CGT
£540
Estimate only, based on standard rates for shares and funds. Not personal advice.
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These tools are educational. They don't take account of your circumstances and are not a personal recommendation. Tax rules can change.