TL;DR: What You Need to Know
- •Between £100k-£125k, you pay an effective 60% tax rate on every pound earned
- •This happens because your Personal Allowance (£12,570) is removed at £1 for every £2 earned
- •The best way to avoid it: pension contributions via salary sacrifice
- •You can save £6,000+ per year by bringing your Adjusted Net Income below £100,000
What Exactly is the 60% Tax Trap?
The UK tax system has a hidden anomaly that most people don't discover until it's too late. While the official tax rates never exceed 45%, earners between £100,000 and £125,140 face an effective marginal rate of 60%.
This isn't a mistake—it's a deliberate policy designed to claw back the Personal Allowance from high earners. But because it's not widely publicized, thousands of professionals are caught off guard every single year. You can verify the official Personal Allowance taper rules on HMRC's income tax rates page .
The Mechanism:
- 1Once you earn over £100,000, HMRC starts withdrawing your Personal Allowance
- 2For every £2 you earn above £100k, you lose £1 of your £12,570 allowance
- 3By the time you reach £125,140, your entire Personal Allowance is gone
- 4Income that was previously tax-free is now taxed at 40%—on top of the 40% you already pay
The Math Behind the Madness
Let's work through a real example. Imagine you currently earn £100,000 and you're offered a £10,000 raise.
£10,000 Salary Increase: Where Does It Go?
£10,000 ÷ 2 = £5,000 allowance removal
£5,000 × 40% = £2,000 additional tax
Effective Rate: 60%
This means that for a £10,000 salary increase, you only see £4,000 after tax. The remaining £6,000 goes straight to HMRC. That's a 60% effective tax rate.
6 Proven Strategies to Avoid the 60% Trap
1. Maximize Pension Contributions (Salary Sacrifice)
This is the single most effective strategy. Contributions via salary sacrifice reduce your "Adjusted Net Income," which is what HMRC uses to calculate the taper. If you can bring your ANI below £100,000, you restore your full Personal Allowance.
Real Example:
- Salary:£110,000
- Pension contribution needed:£10,000
- New Adjusted Net Income:£100,000
- Tax saved:~£6,000/year
Pro tip: Salary sacrifice not only saves Income Tax but also saves National Insurance (both employee and employer). Your employer might even pass on their NI savings as extra pension contributions.
2. Charitable Donations via Gift Aid
Gift Aid donations reduce your Adjusted Net Income in the same way as pension contributions. If you're charitably inclined, this can be tax-efficient.
A £10,000 charity donation reduces your ANI by £10,000. Combined with pension contributions, this can be powerful for those earning just above the £100k threshold.
3. Replace Salary with Tax-Free Benefits
Some employer benefits don't count toward your Adjusted Net Income:
- ✓Cycle to Work Scheme: Up to £1,000/year tax-free
- ✓Electric Vehicle Schemes: Significant BIK tax savings
- ✓Childcare Vouchers: (legacy schemes only, now closed to new entrants)
Note: While these reduce your taxable income, the amounts are typically small compared to pension contributions.
4. Strategic Timing of Bonuses & Income
If you have control over when you receive bonuses, spreading them across tax years can help:
Example: If you're due a £30k bonus and your base is £100k, taking it all in one year means £130k income (deep in the 60% zone).
Splitting it: £15k this year + £15k next year keeps you closer to the threshold each year.
5. Defer Income (Self-Employed / Company Directors)
If you run your own company or are self-employed, you may be able to:
- •Delay invoicing until the next tax year
- •Take dividends strategically (taxed differently than salary)
- •Retain earnings in the company and draw them in a lower-income year
6. Income Splitting (Business Owners Only)
If you own a business with your spouse/partner, you can allocate income to the lower earner to avoid the £100k+ threshold. This must be done legitimately through shareholding structures or partnership agreements.
Caution: HMRC has anti-avoidance rules ("settlements legislation"). Always seek professional tax advice before implementing income splitting strategies.
Common Mistakes to Avoid
❌ Not Acting Until April
Many people realize they're in the trap too late in the tax year. Pension contributions need to be made during the tax year to count. Don't wait until March to act.
❌ Confusing "Relief at Source" with Salary Sacrifice
"Relief at source" pensions (e.g., SIPPs) still reduce ANI, but you have to claim higher-rate relief via self-assessment. Salary sacrifice is automatic and also saves NI.
❌ Forgetting About the Annual Allowance
The standard pension annual allowance is £60,000 (2024/25). If your income exceeds £260,000, the tapered annual allowance can reduce this to as low as £10,000. Plan accordingly.
❌ Ignoring National Insurance
Between £100k-£125k, you're still paying 2% NI. Combined with the 60% Income Tax trap, your true marginal rate can exceed 62%.
Calculate Your Exact Position
Use our free calculator to see exactly how much the 60% trap is costing you—and how much you could save with pension contributions.
Frequently Asked Questions
Do I pay 60% on my entire salary?▼
No. You only pay 60% on income between £100,000 and £125,140. Income below £100k is taxed normally (20%/40%), and income above £125,140 drops back to 45% marginal rate.
What counts toward Adjusted Net Income?▼
ANI = Total taxable income (salary, bonuses, dividends, rental income, etc.) minus pension contributions and Gift Aid donations. Employer pension contributions don't reduce ANI, but employee contributions (via salary sacrifice) do.
Is it worth maxing out my pension just to avoid this?▼
For most people, yes. Saving 60% tax now (and avoiding NI) is far better than paying it and investing post-tax. However, remember pension funds are locked until age 55 (rising to 57). Balance tax efficiency with liquidity needs.
Can I carry forward unused pension allowances?▼
Yes. You can carry forward unused annual allowance from the previous 3 tax years, provided you were a member of a pension scheme in those years. This can allow contributions far exceeding £60,000 in a single year.
Does this apply in Scotland?▼
Yes. The Personal Allowance taper is UK-wide. However, Scottish taxpayers face different income tax bands, so the calculations are slightly different. Our calculator handles Scottish tax automatically.
About This Guide
Written by the Tax Trap Calculator editorial team · Last reviewed February 2026 for the 2025/26 tax year. Rates and thresholds sourced from HMRC official guidance. This guide is for informational purposes only. Always consult a qualified tax advisor before making financial decisions.
© 2026 Tax Trap Calculator. Not financial advice.
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