HMRC Personal Tax Account Warning Issued to Workers in UK 2026

Key Points

• UK workers and pensioners have been advised to check their HM Revenue and Customs (HMRC) Personal Tax Account and tax codes after the October Autumn Budget announcement.
• Tax rates on taxable savings interest will rise by four percentage points across all bands in April 2027, subject to the Finance Bill 2026-27 passing.
• Rates will go up from 20 per cent to 24 per cent for basic-rate taxpayers, 40 per cent to 44 per cent for higher-rate taxpayers, and 45 per cent to 49 per cent for additional-rate taxpayers.
• The Personal Savings Allowance stays at £1,000 for basic-rate taxpayers and £500 for higher-rate taxpayers, while Individual Savings Accounts (ISAs) keep their £20,000 annual tax-free limit.
• HMRC normally collects tax on savings interest by adjusting PAYE tax codes automatically, which can rely on outdated estimates if savers close accounts or move money.

Birmingham (Birmingham Express) November 12, 2026 – Workers and pensioners across the United Kingdom have been issued an urgent warning to review their HM Revenue and Customs (HMRC) Personal Tax Account and tax codes ahead of proposed tax rises on savings interest set to take effect in April 2027.

The alert follows measures outlined in the Autumn Budget on 28 October 2026, under which Chancellor John Healey confirmed plans to increase the tax charged on savings interest outside tax-free wrappers by four percentage points across every income tax band.

What has HMRC warned workers about following the October Budget?

Accountancy specialists are urging employees and pension recipients to verify the details held within their online HMRC Personal Tax Account rather than waiting for automated deductions to reduce their take-home pay. Because HMRC receives annual interest reports directly from banks and building societies, the tax authority routinely adjusts Pay As You Earn (PAYE) tax codes to recover tax owed on savings.

As reported by James Rodger of Birmingham Live and Steven Smith of MyLondon, Harvey Dhillon, founder and chief executive of accountancy firm Zmartly, advised that workers should inspect their tax codes promptly before the proposed April 2027 rules take effect.

Mr Dhillon noted that employed individuals and pensioners will generally not receive a separate bill for savings tax, as HMRC collects it directly through salary or pension deductions.

As reported by Steven Smith of MyLondon, Harvey Dhillon stated: “On the same taxable interest, a basic rate taxpayer would pay a fifth more tax than today. A higher rate taxpayer would pay a tenth more.”

How much will savings interest tax rates increase from April 2027?

Subject to the passage of the Finance Bill 2026-27, the tax rate applied to savings interest above an individual’s tax-free allowance will rise by four percentage points from 6 April 2027. Basic-rate taxpayers will see their rate increase from 20 per cent to 24 per cent, while higher-rate taxpayers will pay 44 per cent instead of 40 per cent.

For additional-rate taxpayers, the tax rate on savings interest will climb from 45 per cent to 49 per cent. Despite the rate increases, the Personal Savings Allowance remains frozen at £1,000 per year for basic-rate taxpayers and £500 per year for higher-rate taxpayers, with additional-rate taxpayers continuing to receive no allowance.

To illustrate the financial impact, Mr Dhillon outlined a scenario using a 4 per cent interest rate for a basic-rate taxpayer earning £30,000 annually with £40,000 held in a standard easy-access savings account. That balance generates £1,600 in annual interest, leaving £600 subject to tax after the £1,000 allowance is deducted.

At the current 20 per cent rate, the tax bill equals £120 per year, rising to £144 per year under the proposed 24 per cent rate. For a higher-rate taxpayer holding the same £40,000 balance, the £500 allowance leaves £1,100 taxable, pushing the annual bill from £440 to £484.

As reported by Steven Smith of MyLondon, Harvey Dhillon explained: “Going from today’s 20 per cent to the proposed 24 adds £24 a year for the basic rate taxpayer and from 40 to 44 adds £44 for the higher rate one. Not life-changing, but it comes out quietly, which is why it’s worth checking.”

How does HMRC collect tax on savings interest through tax codes?

At the end of each tax year, banks and building societies automatically notify HMRC of the total interest paid to customers. For individuals paid through PAYE, HMRC uses these figures—alongside estimates for the current tax year—to alter their tax code and reduce their tax-free Personal Allowance accordingly.

Mr Dhillon warned that if a saver has closed a bank account, transferred funds into a tax-free ISA, or experienced a drop in interest rates, HMRC’s built-in estimate may be inaccurate. In such cases, workers risk overpaying tax until they contact HMRC to update their records and trigger a revised tax code.

Personal finance broadcaster Martin Lewis has also highlighted the impact of the October Budget changes on savers holding cash outside ISAs. As reported by Ben Hurst of Yorkshire Live and the Daily Star, Martin Lewis warned that savers with balances exceeding roughly £11,000 could encounter tax liabilities from April 2027, advising households to make full use of their tax-free allowances.

What protections remain for low earners and ISA savers?

Lower earners continue to benefit from the starting rate for savings, which provides up to £5,000 in tax-free interest for individuals whose other income is below the £12,570 Personal Allowance. This allowance reduces by £1 for every £1 earned above £12,570, meaning someone earning £16,000 in wages retains £1,570 of the starting rate allowance.

Additionally, funds held inside an Individual Savings Account remain completely exempt from income tax on interest. In the Autumn Budget on 28 October 2026, the government reversed a previously proposed reduction and confirmed that the annual cash ISA limit will remain at £20,000.

Background of the Development

The warning stems from fiscal measures unveiled by Chancellor John Healey during the Autumn Budget on 28 October 2026. Alongside maintaining frozen income tax thresholds and keeping the annual ISA allowance at £20,000, the Treasury announced a four-percentage-point increase on tax rates applied to savings interest and property income starting in the 2027–28 tax year.

The legislation required to enact these higher savings tax rates forms part of the Finance Bill 2026-27. Meanwhile, HMRC has expanded its real-time data matching with UK financial institutions, allowing automated PAYE tax code adjustments to capture untaxed bank interest without requiring most employees to file a Self Assessment return.

Prediction: How This Development Can Affect UK Workers and Savers

Once the Finance Bill 2026-27 receives parliamentary approval and the higher rates take effect in April 2027, millions of basic-rate and higher-rate taxpayers holding non-ISA savings will experience higher deductions directly from their monthly wages or pensions. Workers who do not regularly log into their HMRC Personal Tax Account or check their PAYE coding notices may see unexplained reductions in net pay caused by outdated interest estimates.

To avoid overpaying tax or facing unexpected adjustments, UK savers are likely to shift greater proportions of their cash reserves into tax-free ISAs up to the £20,000 annual limit, while actively monitoring their digital HMRC records to ensure estimated interest figures reflect their actual account balances.