Net Return Calculator (After Tax)

For 2026/27, gains outside an ISA are taxed at 18% (basic rate) or 24% (higher/additional rate) after the £3,000 Capital Gains Tax annual exempt amount, which this simplified calculator does not model separately. Gains and income within a Stocks and Shares ISA are entirely free of Capital Gains Tax and Dividend Tax. This tool does not replace individual tax advice — always check current HMRC rules.