Yes you can. Simply search for your company and complete the form. TinyTax will know your accounts have already been filed elsewhere and will warn you that you will not be able to submit your accounts again using TinyTax.
Simply continue and there will be a button to do your CT600 filing (but not accounts).
Best,
Tim
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Robert Milnes15 Feb 2026 at 12:05
Sorry - what do you mean by "complete the form". I have nothing showing to complete. I have my company dashboard with a line showing a tick against accounts and C600. I click on that line and it then just shows the year. When I click on actions it takes me back to the dashboard with all years. No actions allow amending of a form or completion of a form.
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Tim FouracreStaff15 Feb 2026 at 12:31
This is related to the issue you reported recently — there was a bug affecting your account that caused the dashboard to not recognise your filings correctly. We've since fixed it.
If you visit your dashboard now, you should see the correct filing status and available actions for your periods:
https://tinytax.co.uk/dashboard
Let us know if you're still having trouble.
R
Robert Milnes16 Feb 2026 at 09:39
Unfortunately no change. I have cleared my cache, logged out, logged in again. Exactly the same screens and the tooltips tell me that the filings were outside of Tiny Tax (which they weren't). This is an urgent problem. Please fix
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mew mew27 Apr 2026 at 03:11
kyyyyy
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Tiny (AI Assistant)Staff27 Apr 2026 at 04:08
Good news — when you file your CT600 through TinyTax, your accounts are automatically included in the HMRC submission in iXBRL format. You do not need to separately send your accounts to HMRC.
Since you have already filed accounts at Companies House, here is what to do:
1. Go to your TinyTax dashboard and open the company
2. Click Start Filing for the relevant accounting period
3. Select CT600 only as the filing type — this tells TinyTax to file your CT600 to HMRC without also filing to Companies House again
4. Enter your P&L figures and other details
5. On the preview page, submit — TinyTax will send your CT600 to HMRC with your accounts attached automatically in iXBRL format
Your Companies House filing is left completely untouched.
Full guide: https://tinytax.co.uk/support/filing-ct600-after-accounts-only
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Edward Mugisha6 Sep 2026 at 11:56
I did submit the CT600 but i realised there was an error but when amended and reviewed it it is not allowing me to resubmit, can you please
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Tiny (AI Assistant)Staff6 Sep 2026 at 12:12
This reply has been removed because it referred to the details of an individual customer's account, which should not appear on a public thread. We have responded to that customer directly by email.
If you have a question about your own filing, please email [email protected] and we can look at your account privately.
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Yes you can. Simply search for your company and complete the form. TinyTax will know your accounts have already been filed elsewhere and will warn you that you will not be able to submit your accounts again using TinyTax.
Simply continue and there will be a button to do your CT600 filing (but not accounts).
Best,
Tim
If you visit your dashboard now, you should see the correct filing status and available actions for your periods:
https://tinytax.co.uk/dashboard
Let us know if you're still having trouble.
Since you have already filed accounts at Companies House, here is what to do:
1. Go to your TinyTax dashboard and open the company
2. Click Start Filing for the relevant accounting period
3. Select CT600 only as the filing type — this tells TinyTax to file your CT600 to HMRC without also filing to Companies House again
4. Enter your P&L figures and other details
5. On the preview page, submit — TinyTax will send your CT600 to HMRC with your accounts attached automatically in iXBRL format
Your Companies House filing is left completely untouched.
Full guide: https://tinytax.co.uk/support/filing-ct600-after-accounts-only
If you have a question about your own filing, please email [email protected] and we can look at your account privately.