Company tax return
- Corporation tax due
- £28,050
- Marginal relief
- £1,950
- Lower limit for this period
- £50,000
Every figure on this page is worked out from the inputs you enter, by the method stated below it, at the rates and thresholds HMRC publishes on gov.uk and cited beside them. Dividvo publishes no advice on what your company should pay you: the defaults are a worked example to replace with your own numbers, and the tax band is always yours to choose.
A company tax return is the CT600, the computation behind it and the accounts that go with it, filed with HMRC for every accounting period whether or not there is tax to pay. The return is due twelve months after the end of the accounting period, and the tax it works out is due earlier, nine months and one day after the period end, which is the order most first-year directors get backwards. This page is written for the owner-director who has received a notice to deliver a return and wants to know what it contains, what has to be worked out before it can be filed, what happens if it is late, and where the free corporation tax calculator on this site fits. It is not a filing service: Dividvo works the figures and keeps them, and the return is filed by you or your accountant.
Open the Limited company corporation tax calculator Free to use. No account, no card, no trial clock.
Fix the accounting period and the profit for tax
The return covers one accounting period, usually the company's financial year, and the profit it taxes is the accounts profit adjusted for what HMRC does not allow: depreciation comes out, capital allowances go in, entertaining and fines come out. Get that figure before anything else, because every other line on the return is worked from it.
Work the corporation tax with marginal relief, not a flat rate
Nineteen percent up to £50,000 of profit, twenty-five percent above £250,000, and marginal relief in between, with both limits reduced for a short period and divided by the number of associated companies. The UK corporation tax calculator on this site works it exactly that way and prints the relief as its own line.
Pay first, file second, and diarise both
The tax is due nine months and one day after the period end; the return is due twelve months after it. A late return costs £200 on the first day, another £200 at three months, and ten percent of the unpaid tax at six and twelve months, with the fixed penalties rising to £1,000 each after three consecutive late returns. Put both dates in the calendar the day the period ends.
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Company tax return: common questions
Does Dividvo file the company tax return?
No. Dividvo works the corporation tax, the dividend and the loan figures and keeps them against the year, and prints the computation; the CT600 itself is filed through HMRC's service or your accountant's software. The figures you file should be the ones on the sheet, which is the point of keeping the sheet.
Do we file a return if the company made a loss or is dormant?
If HMRC has sent a notice to deliver a return, yes, even with no tax to pay. A dormant company that HMRC has agreed is dormant does not receive the notice; one that is trading at a loss does, and the loss carried forward is itself worth recording on the return.
What if the return is late?
The penalty is £200 the day after the deadline and another £200 three months later, then ten percent of any unpaid tax at six months and again at twelve, per gov.uk. If the return is late three times in a row the fixed penalties become £1,000 each. A reasonable excuse can be appealed, but only after the return has been filed.
Will it do what you need for Company tax return?
Tell us what your company needs and we will tell you straight whether Dividvo Pro does it today, whether it is coming, or whether you need an accountant rather than software. A person reads these and replies.