Every year, thousands of people get stung by a hidden quirk in the UK tax system. Between £100,000 and £125,140, your effective tax rate isn't the 40% you might expect. It's actually 60%.
This "60% tax trap" arises because your Personal Allowance (for tax-free earnings) gradually disappears in this income band. The unfortunate result is a punishing marginal rate that can drastically reduce your take-home pay.
Understanding how this trap works and knowing the strategies to sidestep it could save you thousands of pounds each year.
Below, our financial planners at Castlegate explain what it is, who it affects and four practical ways to avoid it.
The 60% tax trap is not an official tax rate. Instead, it's an “effective marginal rate” you face when your income exceeds £100,000. Here's how it works.
For example, imagine you receive a £10,000 bonus, raising your income from £95,000 to £105,000. You might assume you'll pay 40% tax on the £5,000 above £100,000.
In reality, you lose £2,500 of your Personal Allowance, which gets taxed at 40%. Your actual take-home is just £2,000 – a 60% effective rate on that portion.
This quirk has become increasingly problematic as tax thresholds have been frozen until 2031 (at least), dragging more middle earners into the trap.
So, what can you do to beat it? Here are four ideas to discuss with your adviser:
One of the most effective ways to avoid the 60% trap is to reduce your taxable income through pension contributions.
Payments into your workplace or personal pension receive tax relief at your marginal rate. If you're in the 60% zone, every £100 you contribute effectively costs you just £40 after tax relief.
For instance, someone earning £115,000 could contribute £15,000 to their pension (reducing adjusted income to £100,000), reclaiming their full Personal Allowance and avoiding the trap entirely. This saves approximately £6,000 in tax compared to taking the income directly.
The annual allowance for pension contributions stands at £60,000 for most people, though this may be tapered if your adjusted income exceeds £260,000.
You can also carry forward unused allowances from the previous three tax years.
Beyond pensions, salary sacrifice can be used to fund a range of workplace benefits that reduce your taxable income.
Common options include childcare vouchers (for those already enrolled in legacy schemes), cycle-to-work schemes, and electric vehicle leasing. Each pound sacrificed escapes both income tax and National Insurance (NI).
Technology schemes, additional holiday purchase and health screening programmes may also be available through your employer.
These won't suit everyone, but exploring what's on offer can reveal opportunities to reduce taxable income while gaining benefits you'd otherwise fund from taxed income.
If you have control over when you receive income (e.g. business owners and self-employed individuals), strategic timing can help you avoid the trap altogether. Consider whether spreading income across two tax years might keep you below £100,000 in each year.
Similarly, if you're negotiating a bonus or commission payment, you might request it be split or deferred. Even employees may have some negotiating power here, particularly if your employer understands the 60% trap.
Retirees drawing flexible income from pensions should be especially mindful. Taking a large lump sum in one year might push you well into the trap, whereas spreading withdrawals could keep you below the threshold.
Property sales also warrant consideration. Explore whether phased completion could split the gain across tax years to avoid a single-year spike.
Charitable donations through Gift Aid offer a unique tax advantage for those in the 60% trap. When you donate through Gift Aid, the charity reclaims basic rate tax (20%) from HMRC.
However, you can also claim higher rate relief on your tax return, which extends your basic rate band. This effectively reduces your taxable income, helping to keep your Personal Allowance.
For someone earning £115,000, a £15,000 Gift Aid donation reduces adjusted income to £100,000, saving approximately £6,000 in tax while supporting causes you care about.
Of course, charitable giving should always be motivated by genuine generosity. However, understanding the tax benefits helps ensure your contributions have maximum impact.
The 60% tax trap is one of the UK tax system's most punishing (and little-known) quirks, but it need not be inevitable.
Through smart pension planning, strategic timing, salary sacrifice, charitable giving and careful administration, many people can sidestep the trap entirely or minimise their exposure.
At Castlegate, we regularly help clients navigate these complexities and uncover tailored strategies that align with their financial goals.
Whether you're approaching the threshold through career progression, bonus payments or retirement income, proactive planning can preserve thousands of pounds.
With thresholds frozen until at least 2031 and wage inflation continuing, more earners will be trapped unless they take action.
If you'd like a no-obligation review to assess your exposure to the 60% tax trap and explore strategies tailored to your situation, please call to speak to our team now for a free consultation and review of your current position.
Your capital is at risk. Investments can go down as well as up, and you may not get back the amount you originally invested. Past performance is not indicative of future results. Diversification does not guarantee profits or fully protect against losses. Tax treatment depends on individual circumstances and may change in the future. This content is for information only and does not constitute personal financial advice. Readers should seek independent financial advice before making any investment decisions.
Castlegate Financial Management Limited is registered in England No. 2077374. Registered Office: 8 Castlegate, Grantham, Lincolnshire. NG31 6SE. Authorised and Regulated by the Financial Conduct Authority. FCA No. 169777.
