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File CT600 with HMRC

Posted by Paresh Patel 23 Oct 2025 at 16:14
I have already filed accounts with Companies House. How can I now submit accounts and CT600 to HMRC?

4 Comments

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Tim Fouracre Staff 23 Oct 2025 at 17:28
Hi Pravesh,

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 Milnes 15 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 Fouracre Staff 15 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.
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Robert Milnes 16 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