Yes, HMRC accepts CT600 submissions from CICs via TinyTax — we’ve had several successful submissions.
CICs structured as “Private Limited by Guarantee” work the same as other limited companies for CT600 purposes. You’ll fill in the same form and submit through the same process.
If you have any questions during the filing process, just let us know.
Best regards,
Tim
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Amanda O'Brien1 Dec 2025 at 18:27
Thanks
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Amanda O'Brien2 Dec 2025 at 19:29
Does Tiny Tax convert the data inputted by us to HMRC’s required iXBRL tagging format?
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Tim FouracreStaff3 Dec 2025 at 12:15
For the CT600, corporation tax return, filed to HMRC TinyTax submits the return digitally in XML format. All submissions also have a set of ixbrl tagged accounts, in micro entity format, created from the entered profit and loss and balance sheet data.
However, we do not provide a set of ixbrl accounts for Companies House required for CICs because we don't do the CIC34 form.
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Amanda O'Brien3 Dec 2025 at 17:34
We are also Private Limited by Guarantee, so given that you have had success before with CICs, it sounds as if the micro-entity accounts in the ixbrl tagging format are acceptable? The CIC34 is submitted by post anyway. Do you foresee any problems with this (sorry for all the questions!).
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Yes, HMRC accepts CT600 submissions from CICs via TinyTax — we’ve had several successful submissions.
CICs structured as “Private Limited by Guarantee” work the same as other limited companies for CT600 purposes. You’ll fill in the same form and submit through the same process.
If you have any questions during the filing process, just let us know.
Best regards,
Tim
However, we do not provide a set of ixbrl accounts for Companies House required for CICs because we don't do the CIC34 form.