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Limited companies
UK Corporation Tax Calculator (2026-27)
Enter your taxable company profit to estimate Corporation Tax. The calculator handles the small profits rate (19%), the main rate (25%), and marginal relief in the £50,000-£250,000 transition band.
Tax year: 2026-27 · Last reviewed: 30 April 2026 · Source: GOV.UK Corporation Tax rates
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Your estimate
Corporation Tax estimate
Profit after Corporation Tax
£66,225
From £85,000 taxable profit
Of your taxable profit:
After tax77.9%
Corporation Tax22.1%
Taxable company profit£85,000
Associated companies0
Estimated Corporation Tax£18,775
Profit after Corporation Tax£66,225
Effective tax rate22.1%
Ignores short accounting periods, reliefs, losses, R&D, and ring fence profits. If your company has associated companies, the £50k and £250k thresholds are divided between them. This calculator provides a broad estimate only and is not tax advice.
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