CT600 return rejected by HMRC any ideas why?

Hello and welcome to the Community, marilena1

We'll be happy to support you with submitting the CT600 return in QuickBooks Online Accountant.

First, please confirm the period dates (start and end) that you are trying to submit, and any error code that may show on screen when submitting. 

Please note, QuickBooks cannot prepare annual accounts dated on or before April 1, 2023, or accounts that are over 365 days old. If you need to file a return that falls before this date, you'll need to consider other options.

The period of the return is 01 Dec 2022 - 30 Nov 2023.

Thank you for the prompt response on the thread, @marilena1. Let me share more information about filling your CT600.

From your previous message, I understand you are filing between December 1, 2022, and November 30, 2023. As the period is over 365 days old, I recommend filing this CT600 outside the program.

I have attached the link to the website of HMRC for you to file the tax return for your corporation: File your accounts and Company Tax Return - GOV.UK (www.gov.uk)

If ever you need to file for the latest period of CT600, I am happy to share this article on how to file your tax return and how to export tax info of your clients: 

• File your Corporation Tax return using Workpapers in QuickBooks Online Accountant
• Use Workpapers to export your clients’ tax info

Keep me posted if you still have questions about filing your taxes. Have a great day.