A free tool from Wealth Fortress · No signup

What could higher tax on savings cost you from April 2027?

The Budget raises the tax rates on savings interest to 24%, 44% and 49% from 6 April 2027 (now 20%, 40% and 45%). Your allowances stay the same. See what it could mean for you.

1 · Your income

Use the figure before tax, not your take-home pay. It decides which tax band your savings interest falls into.

2 · Your savings outside ISAs

Only count savings that are not in an ISA, because ISA interest is tax-free. Add up all your accounts, including joint ones, as your share.

Fill in your income and savings above and your estimate appears here.

What next?

Where should your money go?

Tax is one part of the picture. Golden Percentages builds a personal split of your monthly money across saving, spending and goals. It’s free, takes about two minutes and needs no signup.

Weighing up saving, overpaying a mortgage and investing? Mortgage vs Investing is part of the membership.

Fill in the calculator above, then you can email yourself the result.

We store your address only to send this, and may email you once about our free tools. See our privacy policy.

What this estimate assumes
  • It uses the income tax bands for England, Wales and Northern Ireland: personal allowance £12,570, basic rate band £37,700, additional rate above £125,140 of taxable income. The savings rates are the same across the UK, but if you pay Scottish income tax your bands differ, so your result could be slightly different.
  • It applies the Personal Savings Allowance (£1,000 basic rate, £500 higher rate, none for additional rate), the 0% starting rate for savings (up to £5,000, reduced by your other taxable income) and any unused personal allowance, including the reduction in personal allowance above £100,000.
  • It assumes thresholds and allowances stay as they are. It does not include dividends, rental income, pension contributions, Gift Aid, marriage allowance or other reliefs, which can change your result.
  • Interest is counted in the year it is paid or credited, before tax, and only savings outside ISAs.
  • The new rates were announced in the 28 October 2026 Budget and are due to be legislated in the Finance Bill 2026-27. They are not law yet, so details could still change.

Estimates only, not tax or financial advice. Figures are as of 4 November 2026, based on the Budget 2026 rates; see the Budget 2026 rates and allowances table and how much savings interest is tax-free on GOV.UK for the official position. For advice on your own situation, speak to a regulated adviser or HMRC.