Last updated: September 23, 2026
Corporate Tax deadlines in the UAE don't reset on January 1st the way a lot of founders assume. Every deadline that matters is anchored to your company's own dates - licence issue date, financial year end - which means two companies incorporated a month apart can have completely different filing calendars.
The deadlines that actually matter
- Corporate Tax registration - due within a set window after incorporation, regardless of whether tax is ultimately payable
- First Corporate Tax return - generally within nine months of your financial year end
- VAT registration check - not a fixed date, but a rolling 12-month turnover test you need to monitor continuously
- Trade licence renewal - annual, and often the trigger for an audit requirement depending on your jurisdiction
- Qualifying Free Zone Person reassessment - annual, not a one-time confirmation at incorporation
Why this catches new companies specifically
Most setup consultants stop at licence issuance. The Corporate Tax registration deadline lands weeks or months later, once the excitement of incorporation has worn off and nobody's actively tracking it - which is exactly how registration deadlines get missed. See our full Corporate Tax registration and filing guide for how the rates and Qualifying Free Zone Person conditions work.
Building a calendar that actually holds
A compliance calendar that works has to be built from your company's actual dates on day one, not reconstructed after a penalty notice arrives. That means capturing your licence issue date, financial year end, and VAT registration status at incorporation - then reviewing it, not filing it away. This is what our ongoing compliance service is built to do by default.
What happens if you miss the registration deadline
Missing the Corporate Tax registration deadline carries a fixed AED 10,000 late-registration penalty under Cabinet Decision No. 75 of 2023. There's a waiver available if your first tax return or annual declaration is filed within 7 months of your first tax period's end, but that waiver doesn't apply automatically - it depends on that filing actually happening on time, which brings you back to the same tracking problem. Natural persons crossing AED 1,000,000 in UAE business turnover in a Gregorian calendar year face the same registration requirement, due by 31 March of the following year - a deadline that's easy to miss precisely because it isn't tied to incorporation at all.
What the nine-month filing window actually covers
The nine months isn't just a deadline to file a form - it's the window to also settle any tax payable. Filing on time but paying late still triggers separate penalties for late payment, which is a distinction that catches companies who treat the return as the only obligation. The return itself needs to be built on finalised financial statements, which is why the filing deadline and your audit timeline (where an audit applies) need to be planned together, not treated as two unrelated dates that happen to fall in the same window.
If you're not sure where you stand right now
Check your trade licence for the issue date, and your Memorandum of Association for the stated financial year end - those two dates are the anchor for almost everything else. If you can't find them, or aren't sure what's already been filed, that's worth confirming before the next deadline finds you first.