Corporation Tax Help Guide

This section covers all the features within the Capium Corporation Tax module in detail, broken down into sections

IR Mark Not Found
Title: IR Mark Not Found If you are experiencing the issue of the 2022 – IR mark not found in the Capital Allowances section of the Corporation Tax modu...
Tue, 21 Oct, 2025 at 4:19 PM
CT submission error - If the type of company is 0 then an applicable tax rate from one of [FULL RATE OF CT], [SMALL CO RATE OF CT], [EQUIV. LOW CT RATE], [FULL RF RATE OF CT], [RF SMALL CO RATE OF CT] or [CT RATE FOR NI TRADING PROFITS]
When submitting your CT600, if the type of company is 0, you must use an applicable tax rate from the following options: [FULL RATE OF CT], [SMALL CO RAT...
Wed, 22 Oct, 2025 at 1:55 PM
IXBRL Error message
IXBRL Error: If you are encountering an error while creating an annual account and sending CT600, it may be due to the presence of special characters wi...
Thu, 23 Oct, 2025 at 8:55 AM
How to carry back the losses from current year to prior AP?
If you have trading losses in the current accounting period, you may be able to carry back those losses to a previous tax year. Here’s how you can do it: ...
Mon, 3 Nov, 2025 at 6:30 PM
What are the HMRC submission response errors
Title: Common Error Codes and Resolutions for HMRC Submissions When submitting documents to HMRC, you may encounter various error codes that can be conf...
Mon, 3 Nov, 2025 at 8:04 PM