Corporation Tax Calculator
Calculate Your UK Limited Company Tax (2025/26)
Wondering how much corporation tax your business owes? Use our free UK Corporation Tax Calculator to estimate your Limited Company’s tax bill for 2025/26.
Whether you're a small business or growing company, this tool uses HMRC’s official thresholds, including marginal relief, to give an accurate estimate.
Need expert help setting up or managing your limited company tax? Get in touch with Ultra Tax Ltd – the fastest-growing accountancy firm in the North East.
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Corporation Tax Breakdown Explained
Corporation tax in the UK is currently charged at:
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19% on profits up to £50,000
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25% on profits above £250,000
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Marginal Relief applies between £50,001 and £250,000
Our calculator automatically applies the correct rate based on your profit.
This applies to most Limited Companies operating in the UK.
FAQs about Corporation Tax
Everything you need to know about corporation tax
What is corporation tax?
Corporation tax is a tax on the profits of Limited Companies and other corporate entities in the UK. It is payable on trading profits, investments, and chargeable gains.
How much corporation tax do I pay?
The amount you pay depends on your company’s profit. Profits under £50,000 are taxed at 19%, and those over £250,000 at 25%. Between those amounts, Marginal Relief applies.
When is corporation tax due?
Corporation tax is due 9 months and 1 day after your accounting year-end. Missing the deadline can result in interest and penalties from HMRC.
Can Ultra Tax Ltd help with my Limited Company?
Yes — we specialise in Limited Company tax returns, accounts, and advice. We offer unlimited consultations and fast turnaround.
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Need help managing your corporation tax?
Don’t risk penalties or missed savings.
Our accountants will ensure you pay the right amount — and not a penny more.
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