Enter company income
Use turnover for the relevant accounting period.
← All calculatorsLIMITED COMPANY TAX CALCULATOR
Estimate Corporation Tax
Turn company income and allowable costs into an indicative taxable profit and Corporation Tax figure.
HOW THIS CALCULATOR WORKS
A useful estimate starts with the right inputs.
The calculator estimates taxable company profit from turnover and allowable costs, then applies the Corporation Tax rules configured for the accounting year. Associated companies can affect the profit thresholds used for marginal relief.
Add allowable costs
Include operating and salary costs that qualify for Corporation Tax purposes.
Review the company position
See estimated tax, post-tax profit and the effective tax rate.
UNDERSTAND YOUR RESULT
What the numbers are telling you.
Taxable profit
The accounting estimate after the costs entered, before unsupported tax adjustments.
Corporation Tax
An indicative liability using the relevant small-profits, main-rate and marginal-relief rules.
Profit after tax
Company profit remaining before dividends or other distributions to shareholders.
BEFORE YOU ACT
Important points the headline number cannot decide.
- ✓Capital allowances may differ from accounting depreciation
- ✓Associated companies can reduce tax thresholds
- ✓Losses, group relief and R&D claims require specialist treatment
- ✓The payment deadline is normally separate from the filing deadline
COMPANY ACCOUNTS + CT600
View company tax-return service →Need the actual figure filed with HMRC?
Experlu can connect you with support for annual accounts and the Company Tax Return in one clearly scoped service.
COMMON QUESTIONS
What to know before relying on the estimate.
Why does the effective rate differ from the headline rate?+
Marginal relief, associated companies and tax adjustments can make the effective rate different from a single headline percentage.
Does this calculate dividends or personal tax?+
No. This page estimates the company position. Tax on salary or dividends taken by directors and shareholders should be modelled separately.
Is this calculation tax advice?+
No. It is an indicative estimate based on the information entered and the rules configured for the selected tax year. Your final position can change because of other income, reliefs, benefits, residence status and personal circumstances.
NEED CERTAINTY?
Speak to a tax expert →Make the next decision with confidence.
A vetted tax professional can check the assumptions and help you act on the result.