UK Calculator

Corporation Tax Marginal Relief Calculator

Calculate UK Corporation Tax with Marginal Relief for 2024/25

Corporation Tax Calculation
Taxable Profit: £0.00
Augmented Profit: £0.00
Corporation Tax Rate: 0%
Corporation Tax Before Relief: £0.00
Marginal Relief: £0.00
Corporation Tax Due
£0.00
Effective CT Rate: 0.0%
Profit After Tax: £0.00

Corporation Tax Rates 2024/25:

  • Small Profits Rate: 19% (profits up to £50,000)
  • Main Rate: 25% (profits over £250,000)
  • Marginal Relief: Available for profits between £50,000 - £250,000
  • Marginal Rate: Effective rate of 26.5% in marginal relief band
Profit Band Rate Your Position
£0 - £50,000 19% -
£50,001 - £250,000 26.5% (with relief) -
£250,001+ 25% -

Note: This calculator provides estimates based on standard CT rules. Complex situations may require professional advice. Thresholds are adjusted for associated companies and short accounting periods.

About This Calculator

This calculator is part of UK Calculator's comprehensive suite of financial, health, and utility tools designed specifically for UK residents. All calculations use the latest 2024/25 tax rates and official UK guidelines.

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