Income Tax & CGT Calculator

You enter your salary, self-employment, dividend, rental and other income sources, and the calculator applies current 2025/26 Income Tax bands, personal allowance and National Insurance rates to estimate your take-home pay.

Most people can earn up to the standard personal allowance before paying Income Tax, though this reduces for income over 100,000 pounds and is affected by other allowances such as the marriage allowance.

Yes. Income Tax applies to earnings such as salary, self-employment profits, dividends and rental income, while Capital Gains Tax applies separately to gains from selling property, shares or other chargeable assets.

Your total taxable income determines whether your capital gains are taxed at the basic 18% rate or the higher 24% rate, so an income tax calculator UK 2025/26 tool helps show the full picture before you sell an asset.

Salary, self-employment profits, dividends, rental income, pensions and most other income sources count towards your total taxable income, which determines your Income Tax band and your Capital Gains Tax rate.

Yes. Self-employment profits are taxed through Income Tax and National Insurance, and combining them with other income sources can push you into a higher tax band, affecting both Income Tax and Capital Gains Tax rates.