Updated for 2025/26 · Data from HMRC About · Privacy · Terms
Avoid savings tax with an ISA

Move your £250,000 savings into an ISA and keep all £11,250 interest tax-free →

Tax on £250,000 Savings

£250,000 in savings at 4.5% earns £11,250 interest per year. Tax payable: £2,050 (basic rate), £4,300 (higher rate), £5,063 (additional rate).

With £250,000 in savings at 4.5%, your annual interest is £11,250. This exceeds the Personal Savings Allowance at every tax band. A basic rate taxpayer pays £2,050 in tax, a higher rate taxpayer pays £4,300, and an additional rate taxpayer pays £5,063.

Tax on £250,000 at different interest rates

RateAnnual interestTax (basic)Tax (higher)Tax (additional)
3.0%£7,500£1,300£2,800£3,375
4.0%£10,000£1,800£3,800£4,500
4.5%£11,250£2,050£4,300£5,063
5.0%£12,500£2,300£4,800£5,625
6.0%£15,000£2,800£5,800£6,750
The Personal Savings Allowance is £1,000 (basic), £500 (higher), or £0 (additional). Interest above the PSA is taxed at your marginal rate.

How to avoid tax on £250,000 savings

With £250,000 in savings, you cannot shelter everything in an ISA in a single year (the allowance is £20,000). But over 13 years of maximum ISA contributions, you could move the full balance into a tax-free wrapper.

In the meantime, prioritise moving your highest-rate savings into ISAs first to maximise the tax saving.

Other strategies to reduce tax on savings interest:

  • Use your ISA allowance — £20,000 per year, completely tax-free
  • Spread between partners — Each person has their own PSA. If one partner is basic rate (£1,000 PSA) and the other is higher rate (£500 PSA), hold more savings in the basic rate partner's name
  • Premium Bonds — Returns are tax-free (prizes instead of interest). Average "prize rate" around 4%
  • NS&I products — Some National Savings products offer tax-free returns

At what savings level do you start paying tax?

At 4.5%, the PSA breakeven points are:

  • Basic rate (£1,000 PSA): Tax-free on savings up to £22,222
  • Higher rate (£500 PSA): Tax-free on savings up to £11,111
  • Additional rate (£0 PSA): Tax on all savings interest from £1
Your £250,000 exceeds the basic rate threshold of £22,222, so all taxpayers will pay some tax on the interest at 4.5%.

Tax on other savings amounts

  • £230,000: £10,350 interest, £1,870 tax (basic rate)
  • £240,000: £10,800 interest, £1,960 tax (basic rate)
  • £260,000: £11,700 interest, £2,140 tax (basic rate)
  • £270,000: £12,150 interest, £2,230 tax (basic rate)

Frequently asked questions

Do I pay tax on £250,000 in savings?

At 4.5%, £250,000 earns £11,250 interest. A basic rate taxpayer pays £2,050 tax (interest exceeds the £1,000 PSA). A higher rate taxpayer pays £4,300.

What is the Personal Savings Allowance?

The PSA lets you earn savings interest tax-free each year: £1,000 for basic rate taxpayers, £500 for higher rate, and £0 for additional rate. Interest above the PSA is taxed at your marginal rate.

Should I put my £250,000 savings in an ISA?

You should maximise your £20,000 annual ISA allowance. Over 13 years, you could shelter all £250,000 in ISAs.

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