HMRC has announced a change affecting how the personal allowance works for some savers from March 2026. The update raises the effective tax-free threshold to 18,570 under a specific savings rule that alters how savings income is treated alongside other income.
What the HMRC announcement means
This change means certain taxpayers who rely on savings income may be able to receive up to 18,570 tax free before paying income tax on that income. It is not a blanket increase for all taxpayers, but a targeted rule that applies in defined situations.
The savings rule is designed to prevent double taxation of personal allowance when interest or other savings income sits alongside minimal non-savings income.
How the savings rule works
Under the updated savings rule, HMRC allows a higher portion of savings income to be treated as covered by the personal allowance if other income falls under a specific threshold. This can raise the effective tax-free amount available for savings to 18,570 in qualifying cases.
The concept is simple: if your non-savings income (for example, wages or pension) is below the standard personal allowance or a separate limit, more of your savings income may fall within the allowance and escape income tax.
Who qualifies for the 18,570 tax free boost
Not everyone will qualify. This boost targets people whose primary income is savings and whose non-savings income is low enough to trigger the specific savings rule.
- People with low or no salary but with bank interest, dividends, or similar savings income.
- Retirees with small pensions plus savings interest.
- Those whose total non-savings income sits below the threshold specified by HMRC for this rule.
Those with higher earned income or large pension income will generally not benefit, because the personal allowance will be allocated against their non-savings income first.
Practical examples of the rule
Example 1: If Anne has a part-time wage of 6,000 and savings interest of 12,000, the savings rule may allow her to use most of the personal allowance against the combined income, effectively making up to 18,570 of her total income tax free.
Example 2: If Mark has 20,000 salary and 3,000 interest, his salary uses the personal allowance and the savings rule will not give the 18,570 benefit for his interest.
The UK personal allowance itself remains set by broader government rules. The savings rule simply changes how that allowance is applied between savings and other income in qualifying cases.
Steps to check if you benefit
Follow these practical steps to determine if the March 2026 change helps you:
- Gather your income information: payslips, pension statements, and savings interest statements for the tax year.
- Identify non-savings income and total savings income separately.
- Compare non-savings income against the threshold described in HMRC guidance for the savings rule.
- Use HMRC calculators or speak with an adviser to simulate tax treatment under the new rule.
HMRC will publish guidance and examples; reviewing that guidance is the fastest way to confirm eligibility.
How to claim or adjust your tax
If you believe you qualify, you may need to notify HMRC or adjust your tax code. In many cases, HMRC will update codes automatically once they have implemented the policy.
- Check your tax code on your PAYE payslip or Personal Tax Account.
- If your tax code does not reflect the new rule and you qualify, contact HMRC with your income details.
- Consider filing a self-assessment if you normally do one; the rule should be applied when your return is processed.
Practical tips and warnings
Keep records of all interest and dividend statements. HMRC may ask for documentation if you request a tax code change or a refund.
Be cautious about assuming immediate refunds. Changes to tax codes and repayments can take time, and HMRC will process cases in priority order.
When to get professional help
If your income mix is complex—multiple pensions, overseas income, or rental income—ask an accountant or tax adviser to check whether the savings rule applies to you. Small errors can lead to underpayment or overpayment of tax.
Short case study
Case study: Jane, 68, receives a state pension of 5,500 and bank interest of 13,500 in the tax year. Under the updated savings rule she can use most of the standard personal allowance against her combined income. Her effective tax-free income rises close to 18,570, lowering the tax she would otherwise pay on interest. She reviewed documents, contacted HMRC to confirm her tax code, and saw the corrected code applied within two pay cycles.
Next steps for readers
Review your latest statements and calculate your non-savings versus savings income. Use HMRC tools and the government guidance published for March 2026 to confirm the exact threshold and application rules.
If you think you benefit, contact HMRC or your tax adviser to ensure your tax code or return reflects the new rule. Early action can speed refunds or prevent incorrect tax payments.
Staying informed will help you use this change to your advantage if you qualify. Follow official HMRC guidance for the final technical details and any further updates.