How to Avoid Paying Tax on Savings: 7 Legal Methods That Work

Avoiding tax on savings means using legal allowances, accounts, and strategies to reduce or eliminate tax on interest earned. These include ISAs, pension contributions, and the Personal Savings Allowance.

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What Is Tax on Savings Interest?

Savings interest is taxable income in the UK. HMRC taxes interest earned above certain thresholds based on your income tax band. Basic rate taxpayers pay 20% on excess savings interest, higher rate taxpayers pay 40%, and additional rate taxpayers pay 45%.

Banks and building societies report savings interest directly to HMRC. This means undeclared interest is tracked automatically.

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What Is the Personal Savings Allowance?

The Personal Savings Allowance (PSA) is the amount of savings interest you can earn tax-free each year. It was introduced in April 2016.

Taxpayer Type

Tax Rate

Annual Allowance

Basic rate

20%

£1,000

Higher rate

40%

£500

Additional rate

45%

£0

Interest earned within this allowance is not taxed. Interest above it is added to your taxable income and taxed at your marginal rate.

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What Are the 7 Ways to Avoid Paying Tax on Savings?

There are 7 legal methods to avoid or reduce tax on savings interest:

1. Use a Cash ISA

2. Maximise your Personal Savings Allowance

3. Contribute to a pension

4. Use the Starting Rate for Savings

5. Transfer savings to a lower-earning spouse or civil partner

6. Invest in Premium Bonds

7. Open a Lifetime ISA

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How Does a Cash ISA Help You Avoid Tax?

A Cash ISA is a savings account where all interest is tax-free. The annual ISA allowance is £20,000 for the 2024-2025 tax year.

Interest inside an ISA does not count toward your Personal Savings Allowance. This makes it one of the most efficient tools for savers who exceed the PSA threshold.

What Types of ISA Are Available?

Types of ISA include:

• Cash ISA
• Stocks and Shares ISA
• Lifetime ISA
• Innovative Finance ISA

Each type has different rules. You can split the £20,000 allowance across multiple ISA types in one tax year, but the total cannot exceed £20,000.

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How Do Pension Contributions Reduce Savings Tax?

Pension contributions reduce taxable income. A lower taxable income means a lower tax band, which increases the PSA available to you.

A higher rate taxpayer contributing enough to a pension to reduce their income to the basic rate band gains an additional £500 in tax-free savings interest annually. Tax relief on pension contributions is also applied at your marginal rate.

What Is the Annual Pension Allowance?

The annual pension allowance is £60,000 for the 2024-2025 tax year. Contributions above this limit attract a tax charge. The money purchase annual allowance (MPAA) is £10,000 for those who have already accessed pension funds flexibly.

According to a 2023 report by the Pensions Policy Institute, 38% of UK workers are not contributing enough to their pension to maximise available tax relief.

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What Is the Starting Rate for Savings?

The Starting Rate for Savings allows eligible individuals to earn up to £5,000 in savings interest at 0% tax. It applies when total non-savings income is below £17,570.

For every £1 of non-savings income above the Personal Allowance of £12,570, the Starting Rate reduces by £1. A person with £12,570 in employment income qualifies for the full £5,000 Starting Rate.

Who Qualifies for the Starting Rate for Savings?

Qualifying individuals include:

• Retirees with low pension income
• Part-time workers
• Individuals taking a career break

Combined with the PSA, a basic rate taxpayer in this bracket can earn up to £6,000 in savings interest tax-free each year.

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How Does Transferring Savings to a Spouse Reduce Tax?

Transferring savings to a spouse or civil partner with a lower income reduces the tax paid on interest. Each individual has a separate PSA and Personal Allowance.

A spouse with no taxable income can earn up to £18,570 in savings interest tax-free. This combines the £12,570 Personal Allowance, £5,000 Starting Rate for Savings, and £1,000 PSA.

What Is the Marriage Allowance?

The Marriage Allowance allows one partner to transfer £1,260 of their Personal Allowance to the other. This reduces the higher-earning partner's tax by up to £252 per year. Eligibility requires one partner to earn below £12,570 and the other to be a basic rate taxpayer.

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How Do Premium Bonds Help You Avoid Tax on Savings?

Premium Bond prizes are entirely tax-free. Instead of earning interest, savers enter a monthly prize draw with prizes ranging from £25 to £1,000,000.

The prize fund interest rate is 4.40% (2024). No Income Tax or Capital Gains Tax applies to any winnings, regardless of the prize amount.

What Is the Maximum Investment in Premium Bonds?

The maximum holding in Premium Bonds is £50,000 per person. NS&I, the government-backed provider, manages all Premium Bond accounts. Prizes are paid instantly via bank transfer or reinvestment.

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How Does a Lifetime ISA Work?

A Lifetime ISA (LISA) is available to individuals aged 18-39. The government adds a 25% bonus on contributions of up to £4,000 per year, giving a maximum annual bonus of £1,000.

All interest and investment growth inside a LISA is tax-free. Funds can be used to purchase a first home or withdrawn from age 60. Withdrawals for other purposes before age 60 incur a 25% government charge, which effectively removes the bonus and a portion of your own contributions.

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How Do These Strategies Compare?

Strategy

Tax Benefit

Annual Limit

Cash ISA

100% tax-free interest

£20,000

Personal Savings Allowance

Tax-free up to £1,000

£1,000 or £500

Lifetime ISA

25% government bonus

£4,000

Premium Bonds

Tax-free prizes

£50,000 total holding

Starting Rate for Savings

0% on up to £5,000

£5,000

Pension contributions

Reduces taxable income band

£60,000

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What Are the 3 Common Mistakes to Avoid?

1. Exceeding the ISA allowance - contributions above £20,000 in one tax year are subject to tax and HMRC will reclaim the excess.

2. Early LISA withdrawal for non-qualifying reasons - the 25% withdrawal charge reduces the account below your original contribution.

3. Ignoring HMRC tax code adjustments - if savings interest exceeds your PSA, HMRC adjusts your PAYE tax code, which increases the tax deducted from employment income.

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How Do You Report Savings Interest to HMRC?

HMRC receives savings interest data directly from banks and building societies. If interest exceeds your PSA, HMRC adjusts your tax code automatically.

Self-employed individuals and those filing a Self Assessment return must declare savings interest manually. The deadline for online Self Assessment submissions is 31 January each year. Failure to declare incurs a minimum £100 penalty and interest on unpaid tax.

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Can You Combine Multiple Strategies to Avoid Tax on Savings?

Combining strategies maximises tax-free savings. A basic rate taxpayer with a low non-savings income can combine a Cash ISA (£20,000), Personal Savings Allowance (£1,000), Starting Rate for Savings (£5,000), and Premium Bonds (£50,000) to hold a significant amount of savings with zero tax on returns.

HMRC does not restrict the use of multiple legal tax-free methods simultaneously. Consulting a qualified financial adviser ensures the correct strategies are applied based on individual income levels and savings goals.