Example result based on the prefilled values.
Adjusted Net Income
£102,500.00
Estimated Personal Allowance
£11,320.00
Child Benefit Charge
£1,406.60
Child Benefit After Charge
£0.00
HICBC Percentage
100.00%
Gross Reduction to £100,000
£2,500.00
Gross Reduction to £60,000
£42,500.00
Childcare Income Check
Income ceiling not passed
Continue your plan
Useful next calculations
Rates & sources2026/27
2026/27 adjusted-net-income threshold illustration, including the Personal Allowance taper and High Income Child Benefit Charge. The reduction figures are not contribution recommendations.
Source: HMRC — adjusted net income — source checked for 2026/27.
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.
- When you are approaching the £100,000 income level and want to understand the personal allowance taper effect.
- When you are planning a salary sacrifice arrangement and need to see the net pay impact before agreeing terms.
A realistic UK planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
Taxable employment or self-employed income (£)
£35,000
Other taxable income (£)
£35,000
Gross relief-at-source pension contributions (£)
£35,000
Grossed-up Gift Aid donations (£)
£35,000
After entering these figures, review adjusted net income, estimated personal allowance and child benefit charge together rather than in isolation — each metric tells a different part of the story. Then rerun the tool with one input adjusted to see which variable has the biggest effect on all three outputs before you settle on a plan.
How to read your results
Adjusted Net Income
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Estimated Personal Allowance
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Child Benefit Charge
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Child Benefit After Charge
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
HICBC Percentage
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Gross Reduction to £100,000
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Gross Reduction to £60,000
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Childcare Income Check
Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.
Method & assumptionsAuthoritative sources
Adjusted net income is used for several UK tax and childcare thresholds. This explorer starts with the taxable employment or self-employed income and other taxable income entered, then subtracts the gross relief-at-source pension contributions and grossed-up Gift Aid entered.
It estimates the Personal Allowance taper above £100,000 and the 2026/27 High Income Child Benefit Charge above £60,000 using the number of children and weeks entered. The displayed amounts needed to reach £100,000 or £60,000 are arithmetic gaps only, not pension or donation recommendations.
The model does not reproduce a Self Assessment calculation and omits many possible adjustments, losses, reliefs and income types. Salary sacrifice may already reduce the taxable employment figure, while net pension and Gift Aid payments may need grossing up. Use HMRC's adjusted-net-income guidance and obtain advice before making a large or irreversible contribution.
Common mistakes
- !Entering gross income when you really want take-home pay, or vice versa.
- !Ignoring pension contributions, deductions, or local tax rules that change the result.
- !Comparing monthly and annual figures without standardising them first.
- !Overlooking the National Insurance threshold changes that apply mid-year when rates or bands are adjusted in a Budget.
- !Assuming a salary sacrifice benefit reduces take-home pay by the full gross amount, rather than only the after-tax cost.
What to do next
- Check the same scenario with related pay or deduction calculators to see the full picture.
- Keep a copy of the assumptions you used so you can compare next tax year or pay period accurately.
- Read the related guides below if you are choosing between multiple income or deduction options.
- If you are self-employed, run the self-employment tax calculator alongside this result to compare the net position against employed income.
- Check whether increasing your pension contribution by even one or two percent changes the take-home significantly — use the pension calculator next.
Frequently asked
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