CT600 Accepted but Not Showing in HMRC Business Tax Account

After submitting your CT600 through TinyTax and receiving an accepted status, there is typically a delay before the return appears in your HMRC Business Tax Account online. This is normal — this guide explains why and what to do.

Why Has My CT600 Not Appeared Yet?

HMRC's online services (including your Business Tax Account at tax.service.gov.uk) are not updated in real time. After a CT600 is accepted, HMRC's systems typically take 24 to 72 hours to reflect the submission. During this time, you may see no record of the return — this is expected.

The accepted status shown in TinyTax is the authoritative confirmation that HMRC received and accepted your return. You do not need to resubmit.

What to Do

1. Wait 24 to 72 hours after the accepted status appears in TinyTax, then log back in to your HMRC Business Tax Account and check again.
2. If the return still has not appeared after 3 working days, call HMRC's Corporation Tax helpline on 0300 200 3410 and ask them to confirm receipt. Quote your company's UTR number.

Where to Find Your Documents in TinyTax

Your CT600 and associated documents (tax computation, iXBRL accounts) are available from your TinyTax dashboard at any time:

1. Log in to TinyTax
2. Go to your company on the dashboard
3. Click on the relevant filing period to open the filing session
4. Your generated documents are listed and available to download

Note: if you filed only the CT600 and have not yet submitted accounts to Companies House, the iXBRL accounts file will still be available in your filing session for download. The Companies House submission is a separate step.

Common Questions

My CT600 shows as "accepted" in TinyTax — is this confirmed?

Yes. The accepted status means HMRC's transaction engine processed and accepted the return. The delay in your Business Tax Account is just a processing lag on HMRC's side — not an error.

I want to pay my corporation tax but the return is not showing in my account yet

You can pay corporation tax before the return appears in your account. Use HMRC's payment service with your company UTR and the correct accounting period reference. See our guide on paying corporation tax for details.

I have not submitted my accounts to Companies House yet — is that OK?

Yes. CT600 and Companies House accounts are separate submissions with separate deadlines. Your CT600 is complete. Log back in to TinyTax when you are ready to submit accounts to Companies House.