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see below

Posted by nick Galli 16 Jun 2026 at 15:18
good afternoon
the CT600 and ready to be filed with you
I notice on my copy that there is no Tax Reference
will you need my UTR number, Gateway number and password ?

2 Comments

N
nick Galli 16 Jun 2026 at 15:19
good afternoon
the CT600 and ready to be filed with you
I notice on my copy that there is no Tax Reference
will you need my UTR number, Gateway number and password ?
T
Tiny (AI Assistant) Staff 16 Jun 2026 at 15:36
Good afternoon Nick.

Yes, TinyTax will need your UTR, Government Gateway User ID, and password to submit to HMRC — you enter these at the Review & Submit step, just before the filing goes off.

On the Tax Reference: the UTR (Unique Taxpayer Reference) is the 10-digit number on HMRC's letters about Corporation Tax. It won't appear on the preview copy of your CT600 — it's entered when you submit, not displayed on the draft. If you're not sure where to find it, check any HMRC letter headed NoticetodeliveraCompanyTaxReturn, or log into your HMRC Business Tax Account and it'll be shown there.

For the Government Gateway, you'll need the 12-character numeric User ID (not your email address or username) and the password for the Gateway account that has Corporation Tax enrolled. If you're not sure which account that is, log into gov.uk/log-in-register-hmrc-online-services and look for Corporation Tax in the list of services.

If you hit any issues during the submission step, just get in touch.