Late Corporate Tax Registration: Disclosure Guide

Registration and filing errors sit underneath the computation errors. Taxable persons who should have registered for corporate tax and did not face the AED 10,000 late-registration penalty under Cabinet Decision No. 75 of 2023, plus disclosures for the unreported periods. Returns filed late attract monthly penalties under the same decision. If registration was missed, register first, then disclose — the 20-day clock for the underlying errors runs from when you realised registration was due.

Corporate tax is the UAE's newest major tax, and its returns are correspondingly error-prone: first-time filers misapply reliefs, misclassify income, and misjudge which entity in a group the figures belong to. The correction framework is Article 10 of the Tax Procedures Law — the same 20-business-day voluntary disclosure duty that covers VAT — with corporate tax penalties set by Cabinet Decision No. 75 of 2023. The FTA distinguishes errors correctable within the return from those needing the disclosure form; the clock does not distinguish, so keep it running while you decide.

Article 10 of Federal Decree-Law No. 28 of 2022 on Tax Procedures (as amended) requires a voluntary disclosure where a tax return, tax assessment, or refund claim understated the tax due, and Article 10 of Cabinet Decision No. 74 of 2023 sets the deadline: within 20 business days of becoming aware where the understatement exceeds AED 10,000; an error of AED 10,000 or less is corrected in the next tax return instead. The clock starts on awareness, not on the date the error happened: an invoice mistake from two years ago only starts the clock on the day you actually discover it. Business days are UAE working days, so Fridays, Saturdays, Sundays, and UAE public holidays do not count. In practice, the single most important habit is writing down the discovery date the day it happens — an internal memo or email recording what was found, by whom, and when — because that date is what the 20-day count is measured against if the FTA ever asks.

Disclosing costs the underpaid tax plus the 1% monthly voluntary disclosure penalty on it, counted from the day after the original return due date to the filing date, plus the professional cost of preparing the filing; the 14% per annum late payment penalty starts only if the disclosed tax is unpaid 20 business days after filing. Waiting costs the same tax plus more months of the 1% monthly voluntary disclosure penalty, plus a fixed 15% of the tax difference if the FTA notifies an audit first (Cabinet Decision No. 40 of 2017 as amended; No. 75 of 2023 for corporate tax) — and the loss of any cooperation credit in later proceedings. There is also a cost that never appears on a penalty notice: an assessed error, as opposed to a disclosed one, is a harder fact to explain to banks, investors, and buyers in due diligence. For most errors, the cheapest day to disclose is the day of discovery.