Close to a million workers across the United Kingdom will pay a higher share of their earnings to HM Revenue and Customs (HMRC) this tax year, without a single income tax rate having moved on paper. The personal allowance has been locked at £12,570 since April 2021, and every pay award since then has quietly exposed a larger slice of workers' income to tax. Fiscal drag, as it is technically known, is neither accidental nor temporary: it is a structural feature of current policy, and both employees weighing salary offers and HR leaders designing reward frameworks need to understand precisely how it bites.

According to analysis by the TaxPayers' Alliance, drawing on the latest HMRC income tax data, around 500,000 people are forecast to enter the basic-rate band for the first time this year, 410,000 will cross into the higher-rate band, and a further 70,000 will begin paying the additional rate. That is roughly 980,000 workers paying more income tax than they did last year, none of whom saw their stated rate increase. John O'Connell, chief executive of the TaxPayers' Alliance, puts the position plainly: a million more people are being caught in the taxman's net by stealth. He argues that freezing thresholds allows ministers to rake in billions without admitting they have raised taxes, hitting workers, pensioners and families across the country.

What fiscal drag actually is

Fiscal drag operates through a simple mechanism: thresholds stay fixed while wages rise. If your salary increases by 5% but the point at which the 40% higher rate begins does not move, a larger portion of your earnings falls into that band. The rate printed in the legislation has not changed. The proportion of your income exposed to it has.

For 2026/27, England, Wales and Northern Ireland operate three bands under HMRC's PAYE system. Income between £12,571 and £50,270 is taxed at the basic rate of 20%. Income between £50,271 and £125,140 falls in the 40% higher-rate band, and income above £125,140 is taxed at the additional rate of 45%. Scotland operates its own distinct schedule of rates and bands through Revenue Scotland, so the precise figures differ there, but the freeze mechanic exerts the same pressure regardless of jurisdiction.

A second, sharper cliff-edge sits higher up the income scale. For anyone earning above £100,000, the personal allowance is tapered by £1 for every £2 of income above that level and disappears entirely at £125,140. The result is an effective marginal rate that exceeds 60% within that range, a design problem that becomes acute when bonuses or mid-year salary reviews push an employee through it without adequate planning.

Why the freeze is not a short-term issue

The 2025 Budget extended the freeze by a further three years, keeping the personal allowance, basic-rate limit and additional-rate threshold locked until April 2031. The Office for Budget Responsibility (OBR) has estimated that the continued freeze, combined with the earlier reduction in the additional-rate threshold, will raise more than £55 billion in 2030/31. That is the scale of revenue flowing through frozen thresholds rather than explicit rate increases.

The Institute for Fiscal Studies (IFS) has calculated that unfreezing the personal allowance alone would cost between £8.5 billion and £9 billion a year in forgone revenue, which illustrates why a reversal before 2031 remains unlikely despite political pressure. Prime Minister Andy Burnham has acknowledged that frustration about the personal allowance among voters had become lodged in his mind, while also pledging to honour Labour's 2024 manifesto commitment not to raise the basic, higher or additional rates of income tax. That combination leaves thresholds as the only active lever, and it is one the government has every financial incentive to keep in place. Asked directly about relief, Burnham described his earlier remarks as simply showing he had visibility of the issue and the impact it had, adding that it was obviously difficult given the financial circumstances. Read that as acknowledged, not imminent.

The longer-term distribution effect is already visible in HMRC data. The number of additional-rate taxpayers has increased fivefold over the period of frozen thresholds, and higher- and additional-rate payers now account for 72.9% of all income tax revenue, a concentration driven largely by thresholds standing still while earnings have moved.

For employees: what to check before your next pay review

If you have received a pay rise in the past twelve months, three practical checks are worth completing before you treat your next salary review as a genuine real-terms improvement.

• Which band your top pound sits in. A rise from £48,000 to £52,000 does not tax the full £4,000 at 40%, only the portion above £50,270. But that portion is real, and your marginal take-home on it is approximately 60 pence per pound before National Insurance. Knowing this gives you more precise ground when negotiating a counter-offer or evaluating competing roles.
• Salary sacrifice arrangements. Pension contributions taken through salary sacrifice reduce gross pay for HMRC's purposes, which lowers the income subject to tax. For anyone hovering just above the higher-rate threshold, or approaching the £100,000 taper zone, salary sacrifice can protect real income in a way that a headline pay rise cannot. The HMRC-approved Share Incentive Plan (SIP) and Save As You Earn (SAYE) schemes offer additional routes to receive value in a tax-advantaged form, worth exploring if your employer participates.
• Your PAYE tax code. Frozen thresholds do not, by themselves, alter your tax code, but HMRC sometimes operates an outdated or emergency code following a pay change. If your net pay fell by more than the band arithmetic alone would explain, that is worth raising directly with your payroll team before assuming the deduction is correct.

When preparing for a salary conversation, work out the after-tax position before settling on a number. A 6% nominal rise on a £55,000 salary looks generous until you trace most of it to the higher-rate band. Negotiating a mix of cash, additional pension contribution, and benefits can put more in your account each month than a slightly larger gross headline figure. Verified salary data from comparable roles, broken down by sector and region, gives you an objective anchor for that conversation rather than a figure drawn from a single job advert.

Two smaller cost-of-living adjustments are scheduled over the coming months and worth factoring into household budget planning. VAT on household electricity bills will be reduced from 1 October, saving a typical household around £45 a year. The national bus fare cap in England outside London will fall from £3 to £2 from January. Neither measure offsets fiscal drag for a higher-rate payer in any meaningful way, but for lower-paid and part-time workers newly dragged into the basic-rate band, both are worth including in the full picture.

For HR and reward: the strategic pressure building in payroll

The threshold freeze is not a payroll administration issue. It is a reward strategy issue, and it is surfacing in at least three distinct pressure points simultaneously. The Chartered Institute of Personnel and Development (CIPD), which publishes an annual UK Reward Management Survey tracking take-up of profit-share, salary sacrifice and flexible benefits schemes, has consistently found that reward teams which audit their total-compensation architecture regularly are better positioned to retain staff during periods when real-terms pay is being eroded by fiscal policy. The following three areas represent the most load-bearing design questions right now.

1. Nominal-pay demand pressure. Employees whose most recent rise disappeared largely into a higher tax band are more likely to request a larger increase at the next review, or to test the external market. If your reward benchmarking relies primarily on gross-salary comparisons, you may be underestimating how a flat or below-inflation offer lands in take-home terms. Sector benchmarks that include after-tax illustrations, not just gross, are becoming more useful in candidate conversations and internal retention discussions.

2. Salary-sacrifice architecture. Pension salary sacrifice, cycle-to-work, EV lease and holiday-purchase arrangements all shift value from gross pay into forms that are either exempt from income tax or treated more favourably under HMRC rules. For employees pinched by fiscal drag, these arrangements can deliver a genuine real-income improvement at no additional gross-pay cost to the employer, and in some cases with a National Insurance saving on the employer's side as well. Reward teams that have not reviewed their sacrifice menu within the past two years may be leaving meaningful value unclaimed for both the business and its staff.

3. The £100,000 to £125,140 taper trap. This is the band where the personal allowance withdraws and the effective marginal rate crosses 60%. If your grade structure routinely places people in this range, particularly after bonus, you face a retention risk that can present as disengagement but is more precisely described as take-home shock. Pension sacrifice to bring adjusted net income back below £100,000, or structured bonus deferral, are standard tools already endorsed in HMRC guidance; the critical point is to build them into the compensation design rather than reacting only after someone has handed in notice. ACAS (the Advisory, Conciliation and Arbitration Service) guidance on fair pay and transparent communication also supports the case for explaining the after-tax impact of any pay decision in writing, both as good practice and as a way to reduce the risk of grievance when a pay rise produces a smaller net increase than an employee expected.

The wider signal for employer branding is that pay transparency conversations are shifting focus. Candidates and existing staff are increasingly asking what a salary actually places in their account each month rather than focusing solely on the gross band. Reward and talent teams that can walk a candidate through the after-tax picture, including available sacrifice options, come across as materially more credible than those that quote gross and leave the arithmetic to the applicant. The CIPD's member guidance on communicating total reward, and the High Pay Centre's work on pay ratio transparency, both point in the same direction: clarity on the net value of a package is fast becoming a baseline expectation rather than a differentiator.

What to watch through 2026 and into 2031

Two developments merit close monitoring. The first is whether political pressure around the personal allowance produces any partial relief before the 2031 unfreeze date. Prime Minister Burnham's public framing has been deliberately cautious, and the OBR's revenue arithmetic makes substantive relief expensive. On current form, the freeze will run its intended course.

The second is whether wage settlements in sectors accustomed to sub-inflation agreements begin explicitly citing fiscal drag as a ground for higher nominal demands. Unions including Prospect, which represents engineers and technical workers across a range of UK industries, are already sophisticated in their approach to real-terms pay analysis. If fiscal drag becomes a named variable in collective bargaining rather than background noise, the tempo of pay reviews across multiple sectors will shift in ways that reward committees need to anticipate rather than respond to after the fact. The OBR's own modelling treats the revenue from frozen thresholds as a structural component of the public finances through 2030/31, which means the tension between fiscal necessity and employee purchasing power is not a near-term blip but a multi-year design constraint for UK reward strategy.

For now, the freeze is performing exactly the function it was constructed to perform: raising revenue without a headline rate rise. The workers being pulled into new bands made no electoral choice to pay more income tax. The mechanism did the work for them.