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Deductions Calculator | UK
Deductions Calculator is designed to help you understand take-home pay, deductions, and how tax rules affect your income. It works best when you want a fast, comparable estimate before you speak to a lender, provider, adviser, employer, or supplier. Use it as a planning tool rather than a final quote. This version is framed for United Kingdom users where regional assumptions matter, so you can test a few scenarios and see how changes in the main inputs affect the outcome.
Interpretation
What your result means
Use the notes below to understand the main figures in your result and when this calculator is most useful.
When to use this calculator
- Before accepting a pay change, bonus, pension contribution, or salary-sacrifice option.
- When you want to compare employed, self-employed, or dividend-based income scenarios.
- When you need a simple take-home estimate before running payroll or filing returns.
Result
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Next steps
What to do next
Continue with the most relevant next step based on your result.
Example
A realistic UK planning example
A realistic example to help you understand how the numbers fit together.
Gross Pay (£)
£35,000
Tax Deduction (£)
500
NI Deduction (£)
200
Other Deductions (£)
100
After entering these figures, focus on result first and then rerun the tool with a more cautious assumption.
Avoid mistakes
Common mistakes
A few things that often lead to misleading or incomplete results.
FAQ
Frequently asked questions
Helpful answers to common questions about this calculator.
What are the main payroll deductions in the UK?
The main UK payroll deductions are income tax (PAYE), National Insurance contributions, workplace pension contributions, and any student loan repayments if applicable.
How do I check if my deductions are correct?
Review your payslip against HMRC's tax tables for your tax code. You can also check your Personal Tax Account on GOV.UK to verify your tax code and expected deductions.
Can I reduce my tax deductions legally?
Yes, you can reduce deductions through salary sacrifice pension schemes, cycle-to-work schemes, claiming tax relief on work expenses, and ensuring your tax code is correct with HMRC.
What is a tax code and how does it affect deductions?
A UK tax code tells your employer how much tax-free income you are entitled to. An incorrect tax code can mean you overpay or underpay tax, so check your code on your payslip regularly.
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