Filing Your Company Tax Return

Filing Your Company Tax Return

Filing Your Company Tax Return (CT600).


What is a Company Tax Return?

HMRC require a company to report it’s spending, profits and corporation tax and this is done via a Company Tax Return. This involves submitting a financial report with calculations showing how much tax is owed to HMRC and completing a CT600 form.

Read our guide on Corporation Tax to find out when and how to pay.

Filing Deadlines.


HMRC will send you a ‘Notice To Deliver a Company Tax Return’ if you are required to file a Comapny Tax Return.

All limited companies are required to file a Company Tax Return irrespective of having made a loss or there is no Corporation Tax to pay.

The deadline to file is 12 months after the end of your company’s financial year end.

How to read a P60?

A P60 will include the following information and the employer (you) and your employees:

What is a CT600?

A Company Tax Return is also known as a CT600 form. It will include your company information (name, address, UTR etc) but you will also need to include some complex calculations. Depending on your specific circumstances these may well include:

  • Turnover,
  • income (including profits, trading losses brought forward, property income, etc.)
  • Chargeable Gains.
  • Profits before deductions and reliefs.
  • Deductions and reliefs.
  • Tax reconciliation
  • Losses.

All submissions are required be done electronically in iXLBR format (which approved software can do) as paper submissions are no longer accepted.

Late Payment

If you fail to pay before the payment deadline (9 months and one day after your company tax year end), HMRC will charge interest on a daily basis, from the date you should have paid until you actually pay.

The interest charged by HMRC is a deductible business expense so it can be included in the accounts for the period in which it was incurred. Although, it would be better not to incur it in the first place.

How LatePenalty
One day late£100
Three months lateA further £100
Six Months LateHMRC will estimate your Coprporation Tax bill and add 10% of the amount as a penalty
12 Months lateAnother 10% of the estimated tax liability

Late Payment

If you fail to pay before the payment deadline (9 months and one day after your company tax year end), HMRC will charge interest on a daily basis, from the date you should have paid until you actually pay.

The interest charged by HMRC is a deductible business expense so it can be included in the accounts for the period in which it was incurred. Although, it would be better not to incur it in the first place.

At Nazman Accountants

Call us on (01274) 736000 for an appointments to discuss how we can cure your Company Tax Return headaches .

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