Corporation Tax Calculator
Estimate your UK Corporation Tax bill for the 2025/26 tax year.
Want to make sure your CT return is accurate and filed on time? We handle year-end accounts and Corporation Tax for owner-managed UK businesses.
Find out moreThis tool provides an indicative estimate only based on 2025/26 rates. It assumes a standard 12-month accounting period and no other adjustments. Corporation Tax can be affected by allowances, reliefs and group structures. Always consult a qualified adviser before filing.
How AI Accounts can help
Year-end accounts & Corporation Tax
We prepare your year-end accounts and Corporation Tax return, making sure everything is accurate, compliant and filed on time.
Find out moreManagement accounts
Know your numbers before your CT bill arrives. We provide monthly management accounts so you always have an accurate picture of your profit.
Find out moreR&D tax credits
If your company is investing in innovation, you may be able to reduce your Corporation Tax bill through an R&D tax credit claim.
Find out moreBook a free intro call
Not sure how your CT is calculated or want help reducing your bill? Talk to our team. We work with owner-managed UK businesses every day.
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