Marginal Tax Rates & Take‑Home Income

This is my marginal tax rate graph page, and take-home pay calculator. It allows you to include the effects of Universal Credit, giving more realistic numbers than an approach focused on Income Tax & NI alone.

"Marginal tax" refers to the amount of money you'll lose for each additional £1 of salary that you earn, considering both your tax burden and any benefits you lose. A 75% marginal tax rate means that if you receive a £1,000 payrise you'll take home only £250 extra.

The second graph shows take-home pay against gross salary. If you hover over a point on either graph you can see specific numbers, and if you click on a point you can see the full tax calculations. The 'gross salary' text box in the calculations can be edited. Updating other parameters will affect both the graphs and the specific salary tax calculation. If you have any feedback/corrections, you can email me at [email protected].

Click here to view detailed notes.









Free term-time pre-school childcare schemes (570 hours per year per child)
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Other annual childcare costs, not accounted for above
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Pay, tax, and benefits breakdown

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In addition to the figures above, it's possible that non-means-tested DLA (children) or PIP (adults) can be claimed. Rates per person per year are: daily-living £1518.40/£3842.80/£5740.80 lower/standard/enhanced, and mobility £1518.40/£4006.60 standard/enhanced.