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Corporation Tax Estimator

Small profits rate, main rate and the bit in between.

Calculates corporation tax including marginal relief between the lower and upper limits, with adjustment for associated companies and short accounting periods.

What's in it

  • Marginal relief calculation
  • Associated company apportionment
  • Short period pro-rating

Formats

Microsoft Excel

An .xlsx file you download and keep. Works in Excel 2016 and later, and in Numbers and LibreOffice.

Google Sheets

Import the .xlsx into Google Sheets — a native Sheets version of this one is on the way.

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