This article will help you in understanding the Do’s and Don’ts during iXBRL submission with HMRC. Observing the nature of the queries we have received from our customers, we have listed down a few common scenarios and the solutions that might well save your time!
Submission failures, why do they occur?
1. When there’s an information mismatch!
The information within the Accounts / Tax Computation does not match with that on the CT600 (error codes 1606 and 1607).
There are a few cross document validation checks, HMRC gateway checks between Accounts and CT600. This specific validation checks for Company’s Registration Number, Company Name and Accounting Period in the Accounts with that on the front page of CT600. If there is a mismatch, that would lead to submission failure. Examples –
|Companies House Registration Number||01234567||1234567||Failure|
|Company Name||ABC Limited||ABC Ltd||Failure|
The simplest way is just to compare the information in your iXBRL account and CT600 before you attach the iXBRL with CT600.
2. When you attach the incorrect iXBRL file with CT600
There are few possible ways of an incorrect iXBRL file being attached with CT600
When you attach the iXBRL files incorrectly as mentioned above, errors with the error code 0 are bound to happen.
3. Invalid formats
HTML is the only allowed format for CT600 (possible errors: Error code 0 and 1605).
The iXBRL specification says iXBRL files must be in .HTML (.html) format. HMRC system will not accept any files other than specific format (.html files)
These issues can be avoided using the below steps.
DataTracks UK is a leading provider of XBRL services to Accounting Firms and Businesses.
DataTracks (www.datatracks.co.uk) provides iXBRL Managed Tagging Services to help companies convert their financial statements and tax computations to iXBRL format for filing with HMRC. All DataTracks services are provided through an easy to use e-commerce portal. User can register, create entities, place orders, pay, upload files and download iXBRL output when ready. DataTracks developed its iXBRL conversion software in-house, and was designed to support roll forward. As a result, clients are assured of consistency in tagging to their iXBRL documents and conforming to the latest taxonomy.
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