Understanding the personal allowance reduction
Many taxpayers feel surprised when their tax rate rises sharply above £100,000. However, this increase results from the gradual withdrawal of the Personal Allowance (currently £12,570) and is known as the 60% tax band, where once your adjusted net income exceeds £100,000, the allowance starts to reduce. Specifically, you lose £1 of allowance for every £2 of extra income. As a result, your taxable income increases at a faster rate and you face a higher effective tax burden.
How the effective 60% rate arises
Although no official 60% rate exists, the system produces this outcome in practice. This happens because you pay tax on both additional income and lost allowance. Consequently, the combined effect can be significant.
This is best demonstrated by way of an example. If a taxpayer earns exactly £100,000 they would usually benefit from the full personal allowance. However, if their income increases by £1,000 to £101,000 then:
- £1,000 is taxed at 40% = £400
- Their personal allowance is reduced by £500
- That £500 is now also taxed at 40% = £200
In total, you pay £600 tax on an additional £1,000 of income. Therefore, the effective rate reaches 60%. This effect continues until income reaches £125,140, at which point the Personal Allowance is fully withdrawn.
The importance of adjusted net income
Adjusted net income plays a central role in this calculation. It includes most taxable income before Personal Allowance deductions. However, it also takes account of certain reliefs.
For example, pension contributions can reduce your adjusted net income. Similarly, charitable donations made under Gift Aid can also lower the figure. In addition, trading losses may reduce your overall taxable position.
Because of this, careful calculation becomes essential. Even small changes in income can trigger allowance reductions. Therefore, regular monitoring helps you stay within thresholds where possible.
Planning strategies to manage your tax position
You can take proactive steps to reduce the impact of allowance withdrawal. Firstly, increasing pension contributions can bring income below £100,000. This approach offers both tax savings and long-term benefits.
Secondly, you can make charitable donations to reduce taxable income. This strategy can help preserve some of your Personal Allowance. Furthermore, you should consider the timing of bonuses or dividends carefully.
Spreading income across tax years can also help. By doing so, you may avoid breaching key thresholds. In addition, reviewing your remuneration structure can provide further opportunities.
Practical considerations for taxpayers
You should maintain accurate records of all income and reliefs. This ensures you calculate adjusted net income correctly. Furthermore, it helps avoid unexpected tax bills.
Seeking professional advice can also prove valuable. Complex cases often require tailored planning strategies. Therefore, expert support can help you achieve better outcomes.
The withdrawal of the Personal Allowance creates a hidden tax challenge. However, with careful planning, you can reduce its impact. A proactive approach allows you to manage your tax position more effectively.







