Capital gains tax on shares and funds

Tax on profits when you sell shares or funds outside an ISA or pension.

Your details

Your result

Capital gains tax to pay£3,764
  • You keep81%£16,236
  • Capital gains tax19%£3,764
Tax-free allowance£3,000
Taxed at 18%£5,270
Taxed at 24%£11,730
Show the working
Gain after losses£20,000
Less £3,000 allowance£17,000
18% on £5,270 within your basic-rate band£949
24% on £11,730£2,815
Assumptions and limits

2026/27: £3,000 tax-free allowance, then 18% on gains that fall within your basic-rate band and 24% above it. Losses from the same or earlier years can be offset if reported. Selling over two tax years, or moving shares into an ISA each year (Bed and ISA), can reduce the bill.

Sources: Capital Gains Tax allowances · Individual Savings AccountsTax year 2026/27

Common questions

Do I pay capital gains tax on shares in an ISA?

No. Gains inside a Stocks and Shares ISA or a pension are tax-free and don’t need reporting.

When do I need to report gains?

If your gains are over the £3,000 allowance, or you sold more than £50,000 of assets in the year, report them through Self Assessment.

What is Bed and ISA?

Selling investments in a taxable account and buying them back inside your ISA. It uses your ISA allowance and protects future growth, but the sale itself can trigger capital gains tax.

How we calculate

Every calculator uses the published 2026/27 rates from one shared set of rules, so when a rate changes, it changes everywhere.

Where rates come from

Tax, National Insurance, student loan, benefit and property tax rates come from GOV.UK. Each calculator links to its sources.

What we don’t cover

Scottish income tax bands, tax codes other than 1257L, benefits in kind and your personal circumstances. Results are estimates to help you plan, not a payslip or advice.