Do you know how much tax you will pay on your income?
Our free calculator helps you estimate how much Income Tax and National Insurance you could pay based on your salary and circumstances.
You can enter your annual salary, tax code and tax year, as well as factors such as pension contributions, student loans, bonuses, overtime and salary sacrifice. The calculator can also account for Scottish tax rates and certain allowances.
This can help you answer an important question: how much of my salary will I actually take home?
The result is an illustration rather than a guarantee. Your actual tax and National Insurance can depend on your tax code, income sources and individual circumstances.
How does the UK Tax Calculator work?
The calculator starts with your gross annual salary and works out the estimated deductions that apply to you. It can show your:
- Annual take-home pay
- Monthly take-home pay
- Weekly and daily take-home pay
- Income Tax
- National Insurance
- Effective tax rate
- Taxable income
You can also add more details to make the calculation more relevant to your circumstances, including pension contributions, student loans, bonuses, overtime, salary sacrifice and taxable benefits.
How much Income Tax do I pay?
You normally have a Personal Allowance before Income Tax becomes payable. For the 2026/27 tax year, the standard Personal Allowance is £12,570. The amount of tax you pay above this depends on which tax bands your income falls into.
For most taxpayers in England, Wales and Northern Ireland, the main Income Tax rates are 20%, 40% and 45%, although different rules apply in Scotland.
Your Personal Allowance can also be reduced if your adjusted net income is above £100,000.
The calculator takes these tax bands and allowances into account when estimating your take-home pay.
How does National Insurance affect my take-home pay?
National Insurance is separate from Income Tax and can also reduce the amount you receive from your salary.
The amount you pay depends on factors such as your earnings and employment circumstances. Your National Insurance contributions can therefore affect your take-home pay even if your Income Tax position stays the same.
The calculator includes National Insurance alongside Income Tax so you can see the overall deductions from your salary.
What if I live in Scotland?
Income Tax works differently in Scotland, with different tax bands and rates from those used in England, Wales and Northern Ireland.
The calculator allows you to select that you are resident in Scotland so that the relevant Scottish Income Tax rates can be used in the calculation.
National Insurance continues to be calculated separately.
How can pension contributions reduce my tax?
Pension contributions can affect your tax position because eligible pension contributions can receive tax relief.
They can also reduce your adjusted net income, which may be particularly relevant if you earn more than £100,000 and are affected by the reduction in your Personal Allowance.
For the 2026/27 tax year, the standard pension annual allowance is £60,000, although some people have a lower allowance depending on their circumstances.
The calculator can help you see how different pension contribution assumptions could affect your estimated take-home pay.
What happens if I earn more than £100,000?
If your adjusted net income is above £100,000, your Personal Allowance starts to reduce by £1 for every £2 of income above that threshold. It can eventually reduce to zero.
This can make your effective tax rate higher over part of this income range.
If you are a higher earner, pension contributions, salary sacrifice and other available tax planning options can have a significant effect on your overall tax position. The right approach will depend on your circumstances.
What if I receive bonuses or overtime?
Bonuses and overtime can increase your taxable earnings and therefore affect both your Income Tax and National Insurance.
The calculator allows you to add these amounts so you can see how additional income could change your estimated take-home pay.
If you are considering a bonus, pay rise or change in working arrangements, it can be useful to compare the figures before making a decision.
Should I speak to a financial adviser about my tax?
A tax calculator can help you understand how much tax you may pay, but it cannot account for every aspect of your circumstances.
A regulated financial adviser can help you consider how your income, pension contributions, investments and wider financial plans could affect your tax position. A tax adviser may also be able to help with more complex tax matters, including multiple income sources, business income or tax planning.
If you would like help assessing your options, you can use the Trusted Advisor adviser matching service to find a regulated financial adviser suited to your needs. Alternatively, email our team at hello@trusted-advisor.co.uk and we can help you understand the next steps.

