UAE corporate tax compliance runs on a small number of fixed dates, and the penalties attach to the dates rather than to the size of the liability — a business with nothing to pay can still be fined for filing late. This is the compliance calendar in full: registration, the nine-month return deadline, payment, the elections and disclosures that travel with the return, and the seven-year record rule.
Who Files
Every taxable person files an annual corporate tax return: mainland companies, free zone entities (including qualifying free zone persons on the 0% rate), branches of foreign companies, and individuals whose licensed business activity brings them within scope. A 0% outcome — whether from the AED 375,000 band, free zone status or a Small Business Relief election — never removes the filing obligation. The return is where those positions are claimed, not a reason to skip it.
Registration
Registration happens once, through the FTA’s EmaraTax portal, within the timeline the FTA prescribes for the entity type — newly licensed businesses should treat it as part of the setup checklist rather than later housekeeping. The application needs the trade licence, ownership and authorised-signatory details and the financial year. Keeping the profile current matters as much as the original registration: a changed financial year or signatory left unamended creates friction at exactly the wrong moment, the filing deadline.
The Nine-Month Rule
The return must be filed, and any tax paid, within nine months of the end of the financial year. Two worked examples cover most businesses: a financial year ending 31 December 2025 means filing and payment by 30 September 2026; a financial year ending 30 June 2026 means 31 March 2027. The rhythm is now annual and predictable — the first filing cycles are behind most established businesses, and the deadline recurs at the same point every year.
Payment
Tax is due by the same nine-month deadline as the return, through FTA-approved channels. Because the liability crystallises months after the year it relates to, the discipline is to accrue the expected tax during the year rather than discover it at the deadline — a 9% charge on taxable income above AED 375,000 is straightforward to estimate from management accounts.
What Travels With the Return
The return is more than a tax computation. Elections live there: Small Business Relief (for eligible periods ending on or before 31 December 2026) must be claimed in the return for each period, as must other elective positions such as the foreign permanent establishment exemption. Related-party dealings above the prescribed thresholds are disclosed on a schedule filed with the return. And certain categories — qualifying free zone persons and businesses above the revenue threshold set by ministerial decision — must prepare audited financial statements to stand behind the numbers.
The Seven-Year Record Rule
Records supporting the return must be kept for seven years from the end of the tax period: financial statements, the corporate tax computation and working papers, transfer pricing documentation where applicable, related-party disclosures and the evidence behind any election or relief claimed. The test is whether the file would satisfy an FTA reviewer years later, when the people who prepared it may have moved on — which makes record-keeping a bookkeeping process question as much as a tax one, of the kind covered under accounting and outsourced services.
If a Date Has Already Slipped
Late registration, late filing and late payment each carry administrative penalties, and the filing and payment penalties escalate the longer the failure runs. The regime does provide a voluntary disclosure route for correcting errors in filed returns, and acting before the FTA raises the point is consistently the cheaper path. The annual cycle — register once, file and pay by month nine, retain for seven years — sits within the wider compliance picture on our UAE taxation page.
Frequently Asked Questions
When is the UAE corporate tax return due?
Within nine months of the financial year end, together with any payment. A 31 December 2025 year-end files by 30 September 2026; a 30 June 2026 year-end files by 31 March 2027.
Does a company with no tax payable still file?
Yes. Free zone companies on the 0% rate, businesses under the AED 375,000 band and Small Business Relief claimants all file annual returns. The return is where those reliefs and elections are claimed.
How long must records be kept?
Seven years from the end of the relevant tax period — covering financial statements, tax computations, transfer pricing documentation and the evidence behind elections and reliefs.
When must corporate tax be paid?
By the same deadline as the return: nine months after the financial year end, through FTA-approved payment channels. Accruing the liability during the year keeps the payment a formality.
What if a deadline has already been missed?
Penalties apply to late registration, filing and payment, and escalate with time. Filing promptly and using the voluntary disclosure route for errors limits the damage; waiting for the FTA to raise the point does not.