UK ISA & Dividend Tax Calculator 2026/27
Calculate your dividend tax liability and see how much you could save by investing through an ISA. For 2026/27, the dividend allowance is £500. Basic-rate taxpayers pay 8.75% on dividends above the allowance, higher-rate pay 33.75%, and additional-rate pay 39.35%.
ISA vs taxable account
Any growth inside an ISA is completely free of income tax, dividend tax, and capital gains tax. The annual ISA allowance is £20,000 (2026/27). A Lifetime ISA (LISA) allows £4,000 within that limit with a 25% government bonus. Over 10-20 years, the tax savings from using an ISA instead of a general investment account can amount to tens of thousands of pounds.
UK ISA & Dividend Tax Calculator 2026/27
Calculate UK dividend tax and ISA growth. Dividend allowance £500, tax rates 8.75%/33.75%/39.35%. See how much tax an ISA saves vs a taxable account.