You can earn a surprising amount of savings interest tax free in the UK, but the exact figure depends on your income level and tax band in the 2025/26 tax year.

How much interest can you earn tax free?

1. The three building blocks

In the UK, interest on normal savings (not ISAs) can be tax free using a mix of three allowances each tax year (6 April–5 April):

  • Personal Allowance – £12,570 of total income (wages, pension, interest, etc.) is tax free.
  • Starting Rate for Savings – up to £5,000 of savings interest can be taxed at 0% if your other income is low enough.
  • Personal Savings Allowance (PSA) – lets most people earn £500–£1,000 of interest tax free depending on tax band.

On top of those, all interest in ISAs is completely tax free with no upper limit.

2. Personal Savings Allowance (most people use this first)

The PSA is the key “how much interest can you earn tax free” figure people look for:

  • Basic‑rate taxpayers (20%): can earn £1,000 a year in interest tax free.
  • Higher‑rate taxpayers (40%): can earn £500 a year in interest tax free.
  • Additional‑rate taxpayers (45%): £0 PSA – no tax‑free interest from this allowance.

Your tax band is based on your total taxable income including interest.

A rough illustration: MoneySavingExpert notes that a basic‑rate taxpayer would need roughly £20,000 in a top easy‑access account (at current high rates) before they even start to exceed that £1,000 PSA.

3. Extra help for lower earners: Starting Rate for Savings

If your non‑savings income (like wages or pension) is relatively low, you may get a separate Starting Rate for Savings of up to £5,000 , taxed at 0%.

  • You only qualify if your other income is less than £17,570.
  • The maximum starting rate band is £5,000 of interest and is reduced pound‑for‑pound by any income above your personal allowance (£12,570 for most people).

Example simplified from government guidance:

If you earn £16,000 in wages and £200 interest, your wages above the £12,570 personal allowance (that £3,430) reduce the starting rate band from £5,000 down to £1,570, but that’s still enough to cover your £200 interest so you pay no tax on it.

MoneySavingExpert highlights that if your combined income and savings interest are under about £18,570 , you can have all your interest paid tax free through a combination of allowances.

4. Putting it together: realistic tax‑free interest amounts

Here’s a simple way to view it for typical situations (ignoring ISAs for the moment):

  • If you’re a basic‑rate taxpayer with normal earnings:
    • Up to £1,000 interest is tax free via the PSA.
    • You usually won’t get the starting rate, because your earnings are already above the threshold that wipes it out.
  • If you are on low income (under ~£17,570 from non‑savings) :
    • You may combine:
      • Personal Allowance (used first by earnings)
      • Starting Rate for Savings (up to £5,000 interest)
      • Plus PSA (up to £1,000 or £500 depending on band)
    • In some edge cases, that can mean several thousand pounds of interest a year tax free before you owe anything.
  • If you’re a higher‑rate taxpayer :
    • Up to £500 interest tax free via PSA.
* You don’t qualify for the starting rate because your income is too high.
  • If you’re an additional‑rate taxpayer :
    • No PSA , so bank interest outside ISAs is generally taxable from the first pound.

And remember: any amount of interest inside an ISA is tax free , so even very large cash or investment balances can generate interest or returns with no income tax due.

Mini table: PSA by tax band (2025/26)

[9][1][3][5] [1][3][5][9] [3][5][9][1]
Income tax band Tax-free interest from PSA
Basic rate (20%) £1,000 per year tax free interest
Higher rate (40%) £500 per year tax free interest
Additional rate (45%) £0 PSA – no extra tax-free interest

5. Quick example scenarios

Here are some simple, story‑style examples to make it clearer (all for a single tax year):

  1. Emma – full‑time worker, basic‑rate taxpayer
    • Salary: £35,000, savings interest: £900.
    • She’s a basic‑rate taxpayer, gets a £1,000 PSA, so all £900 interest is tax free.
  2. Jake – low‑income part‑time worker
    • Wages: £15,000, savings interest: £600.
    • Personal allowance uses up the first £12,570 of wages; the remaining £2,430 wages reduce the starting rate band from £5,000 to £2,570.
 * He still has enough starting rate band to cover all £600 interest tax free, and he also has a PSA on top if he earned more interest later.
  1. Alex – higher‑rate taxpayer
    • Total income places Alex in the 40% band, savings interest: £1,200.
    • First £500 interest is tax free via PSA, remaining £700 is taxed at 40%.

6. What to do if you’re planning savings

A few practical points if you’re trying to maximise tax‑free interest now:

  • Work out your approximate total income for the tax year to see your likely band.
  • Estimate your expected interest (savings, fixed terms, bonds, etc.) to check if you’ll breach your PSA.
  • If you’re heading above the allowance, consider using cash ISAs or stocks & shares ISAs to keep future interest/growth outside income tax.
  • If your income is on the lower side, check whether the starting rate for savings applies – it can be surprisingly generous.

Information gathered from public forums or data available on the internet and portrayed here.