yCalculator

Finance Calculators

Capital Gains Tax Calculator for Shares

Use this page to estimate personal CGT when selling shares, funds, ETFs, or other investments outside an ISA.

Main calculator

Capital Gains Tax Calculator

Calculate personal UK Capital Gains Tax on shares, property, crypto, business assets and other disposals

Calculate CGT on shares

How CGT on shares works

Your gain is normally sale proceeds minus purchase cost and allowable dealing costs. Losses and the annual exempt amount can reduce the taxable gain.

ISA investments are different

Shares and funds held inside a Stocks and Shares ISA are exempt from CGT, so this page is for investments held outside an ISA.

Frequently asked questions

What is the CGT allowance for shares?

The annual exempt amount is GBP 3,000 for 2025/26.

Do broker fees reduce the gain?

Buying and selling costs can usually be included when calculating the gain.

Related calculators

finance calculators

Capital Gains Tax Calculator

Calculate personal UK Capital Gains Tax on shares, property, crypto, business assets and other disposals

Calculate →

finance calculators

Income Tax Calculator

Calculate your income tax bill for 2025/26 across all income types

Calculate →

finance calculators

Crypto CGT Calculator

Calculate UK Capital Gains Tax on cryptocurrency disposals including the 30-day same-day rule

Calculate →