What is 40% Tax Bracket? How It Works and What It Means for Your Pay

Are you earning a higher salary but are concerned you may take home less? It is a common concern for employees who receive a pay rise, bonus, or promotion and may think their whole income suddenly falls into the 40 tax bracket. Fortunately, this is a myth.

The UK uses a progressive income tax system, meaning different portions of your income are taxed at different rates. You are only required to pay the 40% higher rate on the portion of your income that exceeds the higher-rate threshold, not on your entire salary.

This guide clearly explains the 40% tax bracket, the salary at which 40% tax applies, and the legal process you can take to more effectively manage your tax position.

What is the 40% Tax Bracket in the UK?

The 40 tax bracket in the UK is a marginally higher-rate income tax band applied to earnings that exceed the higher-rate threshold. Because the UK follows a progressive system, meaning that crossing this threshold does not make the entire salary subject to the 40% rate. Rather, the higher rate applies to the portion of income that exceeds the limit.

Let’s understand with an example

For instance, in England, Wales, and Northern Ireland, the higher rate applies to taxable earnings between £50,271 and £125,140. Income that falls below that threshold is subject to taxation at either the base 20% rate or the 0% personal allowance. Scotland uses Income Tax bands with slightly distinct thresholds and rates.

At What Salary Do I Pay 40% Tax?

As mentioned above, in the United Kingdom (excluding Scotland), the 40% higher-rate tax applies to the portion of your income that exceeds £50,270. The 40 tax bracket does not apply to your entire salary; it applies only to earnings between £50,271 and £125,140.

To understand Income Tax rates on your taxable income, look at the table below; this only applies to England, Wales, and Northern Ireland:

Band	Taxable Income	Tax Rate
Personal Allowance	Up to £12,570	0%
Basic Rate	£12,571 to £50,270	20%
Higher Rate	£50,271 to £125,140	40%
Additional Rate	Over £125,140	45%

Note: Scotland has its own specific income tax band and rates.

What Tax Band is 40%?

To understand the 40% tax bracket, note that if your total gross annual income exceeds £50,270, you fall into the 40% tax band, as shown in the table above. This means the 40% rate is not applied to your entire salary; it only applies to the portion of your income that exceeds the threshold.

How Does the 40% Tax Bracket Actually Work?

The simplest way to understand a 40 tax bracket is that the UK tax system applies tax in slices. Each portion of your taxable income is taxed at the rate that applies to that band. Let’s understand this with an example:

Suppose you earn £70,000. The first £12,570 is taxed at 0%, then the next £37,700 is taxed at 20%, and the remaining £19,730 is taxed at 40%. Only the portion of your income above the higher-rate threshold is taxed at 40%. Thus, the only amount that lies within the higher-rate band is £19,730.

Does National Insurance Change When You Enter the 40% Tax Band?

When you enter the 40% (higher-rate) income tax bracket, your National Insurance (NI) does not change. Income Tax and National Insurance are calculated separately, using different thresholds and rates. Actually, your marginal NI rate decreases on earnings above the Upper Earnings Limit, even though your Income Tax rate increases.

Who Pays the 40% Tax Rate?

The 40 tax bracket in the UK applies to anyone with taxable income between £50,271 and £125,140. This applies to a variety of income streams, such as salaries, self-employment income, pensions, and rental income. It is crucial to note that only the portion of your income that exceeds £50,270 is subject to a 40% tax bill.

One thing to keep in mind is that you are not required to pay 40% of your total salary; rather, lower portions are taxed at the 0% Personal Allowance (up to £12,570) and 20% Basic Rate (£12,571 to £50,270).

Which Earners Fall into the 40 Tax Band?

The 40 tax bracket affects individuals with medium-to-high incomes, such as IT professionals, engineers, NHS staff, small business owners, contractors, and those with combined income sources, such as dividends or property income.

According to UK tax statistics, only a minority of taxpayers pay the higher rate of Income Tax, although they contribute a significant proportion of total Income Tax receipts.

How Much Tax Will I Pay If I Earn Over 40k?

Earning more than £40,000 does not automatically place you in the 40 tax bracket. If you are in England, Wales, or Northern Ireland and have the standard Personal Allowance, you will typically be subject to 40% Income Tax once your income exceeds £50,270.

For instance, the first £12,570 of a £40,000 salary is typically tax-free, while the remaining £27,430 is typically subject to the 20% basic rate of tax. However, if your taxable income exceeds £50,270, you are in the 40% tax bracket and pay a higher rate.

What is the Hidden 60% Tax Trap?

The “hidden 60% tax trap” refers to a marginal tax rate that applies to UK earners with an adjusted net income between £100,000 and £125,140. It occurs because, for every £2 earned above the £100,000 threshold, you lose £1 of your tax-free personal allowance. This creates an effective marginal tax rate of 60% because you pay 40% Income Tax on additional earnings while simultaneously losing part of your Personal Allowance.

How to Avoid the Trap?

To avoid the trap, you need to reduce your Adjusted Net Income to £100,000. The most common ways to achieve this include increasing contributions to an employer-sponsored pension, utilising Salary Sacrifice arrangements for workplace benefits, or making charitable donations through Gift Aid.

Can Your Tax Code Affect a Higher Tax Rate?

Your tax code can influence the amount of income tax deducted from your salary through PAYE, as it tells your employer how much tax-free income to apply. HMRC may change your tax code if you receive taxable benefits, have multiple jobs, receive pension income, or have unpaid tax from a previous year.

This does not change the higher-rate threshold; however, it may affect the amount of tax collected from your salary throughout the year. If your tax code reduces your tax-free allowance, more of your income may be taxed sooner through payroll. This is why employees in the 40 tax bracket should check their tax code and contact HMRC if it appears to be incorrect.

How To Avoid Paying 40% Tax On Salary?

By reducing your taxable income to below the higher-rate threshold, you can avoid paying the 40% higher-rate tax. In the UK, the most common and effective strategies that are HMRC-approved are as follows:

• Increase Pension Contributions

One of the most important ways to reduce your taxable income is contributing more to your workplace pension or a Self-Invested Personal Pension (SIPP).

• Salary Sacrifice:

Ask your employer to exchange a portion of your gross salary for non-cash benefits or direct pension contributions. This lowers your salary, and you may drop into a lower tax band. Salary sacrifice is only available if your employer offers it.

• Charitable Donation

Gift Aid is a way of making charitable donations that effectively broadens your basic-rate tax band.

• Asset Transfer

If you are married or in a civil partnership, transfer income-producing assets (such as savings or investments) to your companion if they are in a lower tax bracket. Transfers between spouses and civil partners are generally exempt from Capital Gains Tax.

Does the 40 Tax Bracket Change Each Tax Year?

The 40% tax bracket is subject to change, although it does not occur frequently. The threshold in the United Kingdom is set by the government and remains frozen for several years. The 40% rate itself, as well as its threshold, can shift due to inflation adjustments, fiscal drag, and annual budget changes.

The Bottom Line

you receive a bonus, or your tax code changes, understanding how the higher-rate tax band works can help you make more informed decisions when your salary increases. The primary point to keep in mind is that the 40% rate does not apply to your entire income; it applies only to the portion that exceeds the higher-rate threshold.

It may be beneficial to review your tax code, pension contributions, taxable benefits, and other income if your income is close to the higher-rate threshold. This can help you enhance your plan more clearly before the end of the tax year.

Need Help Understanding the 40 Tax Bracket?

If you are uncertain about how the 40% tax bracket affects your salary, bonus, pension contributions, or tax code, don’t worry; our accountants review your tax position with clarity. At LimitedCompanyAccountants, we assess your tax code, pension contributions, PAYE position, and other taxable income to ensure you know your tax obligations and potential legal tax savings.