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CT600 OVERDUE BY 11 DAYS* but have already filed to HMRC?
My account is saying CT600 OVERDUE BY 11 DAYS* for the accounting period 1st February 2024 to 31st January 2025 but I already filed returns for that period using the HMRC online filing software and I already filed accounts to companies house. My dashboard has a tick for the accounts section recognising that my companies house accounts were filed for that year but it is saying overdue for CT600?
I just logged in to my HMRC submissions to double check I have definitely filed my tax returns and yes I have:
HM Revenue and Customs submission
HMRC has received your accounts and Company Tax Return for the period 1 February 2024 to 31 January 2025.
Time and date: 2:23pm, Wednesday 26 March 2025 GMT
There is a Correlation ID and IR Mark provided and the
Status is: Submitted
So I am confused about this do I still need to submit the CT600 on tiny tax for the period 1 February 2024 to 31 January 2025 if I have already submitted my company tax returns directly to HMRC using their online filing software? And I have also filed to companies house for that period too so I thought I was completely up to date. As far as I am aware I am only due to start to file returns from 1st February 2025 to 31st January 2026?
Kind Regards
I just logged in to my HMRC submissions to double check I have definitely filed my tax returns and yes I have:
HM Revenue and Customs submission
HMRC has received your accounts and Company Tax Return for the period 1 February 2024 to 31 January 2025.
Time and date: 2:23pm, Wednesday 26 March 2025 GMT
There is a Correlation ID and IR Mark provided and the
Status is: Submitted
So I am confused about this do I still need to submit the CT600 on tiny tax for the period 1 February 2024 to 31 January 2025 if I have already submitted my company tax returns directly to HMRC using their online filing software? And I have also filed to companies house for that period too so I thought I was completely up to date. As far as I am aware I am only due to start to file returns from 1st February 2025 to 31st January 2026?
Kind Regards
1 Comment
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TinyTax syncs with Companies House, which is how we can see your accounts have been filed for that period. However, HMRC doesn't provide a way for us to check whether a CT600 has been filed directly with them, so our dashboard doesn't know about your March 2025 submission.
You definitely don't need to file again through TinyTax — that would create a duplicate filing.
To clear the overdue warning, you can mark it as filed from your dashboard:
1. Find the period ending 31 January 2025 on your dashboard
2. Click the action button for that period
3. Select "CT600 Filed Elsewhere"
That will update your dashboard to reflect that everything's been filed. You're correct that your next filing is for the period 1 February 2025 to 31 January 2026.