UK Income Tax and National Insurance 2026/27: How Your Take-Home Pay Is Worked Out
The 2026/27 Personal Allowance, tax bands and employee National Insurance rates, with a step-by-step take-home pay example and the £100,000 trap.
Read the guideIncome Tax / NI Calculator
Estimate UK net pay using 2026/27 personal allowance, income tax bands, employee NI thresholds, and pension contributions.
Income Tax£0
National Insurance£0
Pension Contribution£0
Estimated Annual Net Pay£0
Monthly Net Pay£0
Effective Deduction Rate0%
About the Income Tax / NI Calculator
The Income Tax / NI Calculator is most useful when you want more than a quick number. Estimate UK income tax, National Insurance, and net pay. In practice, that means turning a rough idea into a planning decision that you can actually live with month after month. A lot of people stop at the first result they see, but the real value of this tool comes from comparing scenarios and understanding why the result changes.
Next, change one input at a time. This is where many users miss the real insight. When you adjust several numbers together, it becomes hard to tell what is driving the change. A cleaner method is to hold everything constant except one variable. You might test measuring the effect of pension contributions, then compare that result with the original scenario. That one comparison often teaches more than a dozen random calculations.
How to use the Income Tax / NI Calculator
- Enter annual income and pension assumptions if relevant.
- Check estimated income tax, National Insurance, and net pay side by side.
- Use the result to understand real take-home pay before making spending decisions.
UK income tax and NI estimate
Net income = gross income − income tax − National Insurance − pension deductions
- Gross income: Annual salary or taxable income
- Income tax: Estimated tax using current bands
- National Insurance: Employee NI estimate
This gives a practical take-home estimate for planning and comparison, not a final payroll statement.
Quick planning notes for the Income Tax / NI Calculator
Estimate UK income tax, National Insurance, and net pay. Start with a realistic baseline, then change one input at a time to see how the result moves. That makes it easier to compare scenarios and spot the trade-offs that matter most.
Tax planning notes
- Treat this as an educational estimate and verify official rates, thresholds, and allowances before filing.
- Run scenarios at different income levels to understand how rate changes affect net outcomes.
- Use salary and retirement tools alongside tax estimates to see the practical impact on take-home pay.
Keep in mind
These results are designed for educational planning. Real-world figures can change based on official rates, lender fees, tax treatment, insurance, and personal circumstances.
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Frequently asked questions
How accurate is this Income Tax / NI Calculator?
This tool is useful for planning and comparison. It uses simplified assumptions, so confirm important decisions with official rates, lenders, or tax advisers.
Can I use this Income Tax / NI Calculator on mobile?
Yes. The calculator is responsive and works on phones, tablets, and desktop browsers.
Does this tool store my financial data?
No. Calculator inputs stay in your browser and are not saved to our server.
Guides on this topic
Plain-English explanations to help you read the result above.
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