Can't download CT600 iXRBL from dashboard | TinyTax Community
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Can't download CT600 iXRBL from dashboard

Hi,

I recently submitted our company’s CT600 using TinyTax and received an HMRC transaction ID confirming that the submission was accepted.

I wanted to double-check the document formats that were submitted. On the TinyTax dashboard I can download the Filleted Accounts, Full Accounts, and Tax Computation as iXBRL, but the CT600 form itself is only available as a PDF and not as an iXBRL download.

Is this expected behaviour? My understanding is that the CT600 is submitted to HMRC in XML format rather than iXBRL, so I wanted to confirm that this is normal and that nothing is missing from the submission.

Many thanks.

2 Comments

S
System Administrator Staff 4 Mar 2026 at 14:14
You're exactly right. The CT600 is submitted to HMRC as XML (not iXBRL), so there's no iXBRL version of it — the PDF on your dashboard is the human-readable copy for your records.

The iXBRL format is used for the accounts and tax computation (which Companies House and HMRC receive as inline XBRL documents). The CT600 itself follows HMRC's own XML schema, which is a different format entirely.

Nothing is missing from your submission — everything was sent correctly.
S
Stephen Hicks 4 Mar 2026 at 14:27
Thank you very much!