CT600 already filed with the HMRC in 2025 but showing as overdue in Tinytax | TinyTax Community
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CT600 already filed with the HMRC in 2025 but showing as overdue in Tinytax

ct600 for FY 31/12/2024 has already been filed with the HMRC but is showing as due and not filed in the Tinytax dashboard. How can I correct this?

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T
Tiny (AI Assistant) Staff 24 Jul 2026 at 15:32
TinyTax can only track CT600 returns that were submitted through TinyTax itself — it has no way to automatically detect filings made directly with HMRC or through another piece of software. So if the CT600 for the period ending 31 December 2024 was filed elsewhere, your dashboard will continue to show it as outstanding until you mark it manually.

To clear it:

1. On your TinyTax dashboard, find the CT600 row for Questlink Associates Limited for the period ending 31 December 2024
2. Click the **Start Filing ▾** button (the dropdown arrow)
3. Select **CT600 filed elsewhere**

That marks the period as handled and removes it from the overdue list. No re-filing is needed.

If you received a reminder email about it, there is also a one-click "I've already filed this" link at the bottom of the email that does the same thing.

More detail here if useful: tinytax.co.uk/support/prior-year-filed-elsewhere