Filing a UAE corporate tax return means submitting your company’s taxable income and paying any liability through EmaraTax, the Federal Tax Authority’s online portal. For a financial year ending 31 December 2025, both the return and the payment are due by 30 September 2026 — nine months after year-end, with no separate payment window.
That single sentence contains the two facts most first-time filers get wrong. The deadline is not linked to a calendar date the same way VAT is; it moves with your financial year. And there is no grace period between filing and paying — the Federal Tax Authority (FTA) expects the money on the same day the return lands. This guide walks through the full EmaraTax process, the numbers behind each decision, and the penalties that apply when a step is missed.
What is EmaraTax?
EmaraTax is the Federal Tax Authority’s digital platform for all UAE tax administration, including corporate tax registration, return filing, and payment. Every taxable person interacts with corporate tax exclusively through this portal — there is no paper alternative and no email submission route.
The platform replaced the FTA’s older e-Services system and now consolidates VAT, excise tax, and corporate tax under one login. When you registered for corporate tax you received a Tax Registration Number (TRN); that number is the key to your EmaraTax dashboard, where the corporate tax return appears as a dedicated tile once your first tax period closes.
What is UAE corporate tax and who must file?
UAE corporate tax is a federal tax on business profits, charged at 9% on taxable income above AED 375,000 and 0% below that threshold. It was introduced by Federal Decree-Law No. 47 of 2022 and applies to financial years starting on or after 1 June 2023.
Almost every business in the country must file, even when no tax is due. Mainland companies, free zone entities, and foreign companies with a UAE permanent establishment all fall inside the net. A free zone business claiming the 0% Qualifying Free Zone Person (QFZP) rate still files a full return, and a company using Small Business Relief still submits — a “nil” return is a submission, not an exemption from the filing obligation itself. The only businesses outside the regime are those with genuinely no taxable presence, such as certain foreign investors earning only dividends.
When is the corporate tax return due?
The corporate tax return is due nine months after the end of the tax period, and the same date is the deadline for paying any tax owed. A company whose financial year ends 31 December 2025 must therefore file and settle by 30 September 2026.
Because the deadline follows the financial year rather than a fixed national date, two companies can have very different due dates. The table below shows how the nine-month rule maps onto common year-ends.
| Financial year-end | Tax period | Filing and payment deadline |
|---|---|---|
| 31 December 2025 | 1 Jan – 31 Dec 2025 | 30 September 2026 |
| 31 March 2026 | 1 Apr 2025 – 31 Mar 2026 | 31 December 2026 |
| 30 June 2026 | 1 Jul 2025 – 30 Jun 2026 | 31 March 2027 |
| 30 September 2026 | 1 Oct 2025 – 30 Sep 2026 | 30 June 2027 |
The FTA does not grant routine extensions. Unlike some jurisdictions where an accountant can request extra weeks, the UAE deadline is effectively fixed, so the practical planning date should be several weeks before the legal cut-off.
How do you file a corporate tax return on EmaraTax?
Filing on EmaraTax follows five sequential stages: reconcile your accounts, confirm whether an audit is required, choose your tax regime, complete the return schedules, and submit with payment. Each stage depends on the one before it, so the order matters.
Stage one — close and reconcile the books. Corporate tax is calculated from financial statements prepared on an accrual basis under IFRS (or IFRS for SMEs where revenue is under AED 50 million). Before touching the portal, the trial balance should be final: revenue recognised, expenses matched, and the accounting net profit agreed. This figure is the starting point for the return.
Stage two — confirm the audit position. Audited financial statements are mandatory where revenue exceeds AED 50 million in the tax period, and for any business claiming Qualifying Free Zone Person status regardless of size. If an audit is required, it must be complete before filing, because the return references audited figures.
Stage three — select the tax regime. Inside EmaraTax the return asks which basis applies: standard 9% taxation, Small Business Relief (available where revenue stays under AED 3 million, with the relief in its final eligible year for periods ending in 2026), or the 0% QFZP route for qualifying free zone income. This choice drives which schedules open next.
Stage four — complete the return. The return begins with accounting net profit and applies the adjustments the law requires: adding back non-deductible items, applying the interest limitation, claiming reliefs, and arriving at taxable income. The 9% rate is then applied to the portion above AED 375,000.
Stage five — submit and pay together. Once the schedules reconcile, you submit the return and settle the liability in the same session. Payment runs through the portal’s linked channels, and only a paid, submitted return counts as filed.
What documents do you need before filing?
You need audited or management financial statements, your Tax Registration Number, records of any transfer-pricing transactions, and supporting schedules for every relief claimed. Assembling these before opening EmaraTax prevents a half-completed return timing out.
The transfer-pricing documentation point catches many groups off guard. Under Ministerial Decision No. 97 of 2023, a UAE business must maintain a master file and local file where it belongs to a multinational group with consolidated revenue above AED 3.15 billion, or where its own revenue reaches AED 200 million. Related-party and connected-person disclosures are part of the return itself, so those figures need to be ready, not gathered mid-filing.
How is taxable income calculated on the return?
Taxable income starts from the accounting net profit in your financial statements and is then adjusted for items the corporate tax law treats differently. Certain income is exempt, some expenses are non-deductible, and specific reliefs reduce the figure before the 9% rate is applied.
The most important adjustments follow a consistent pattern. Dividends and capital gains from qualifying shareholdings are exempt under the participation exemption, so they are removed from the taxable base. Entertainment expenses are only 50% deductible, and fines, donations to non-approved bodies, and certain related-party costs are added back entirely. Net interest expense is capped: a business can generally deduct net interest only up to 30% of its tax-adjusted EBITDA, subject to a safe-harbour threshold of AED 12 million below which the full amount is allowed. Each of these adjustments has its own schedule inside EmaraTax, and the portal carries the running total down to the taxable income line automatically once the inputs are entered.
Getting this stage right is where professional help earns its fee. The accounting profit and the taxable profit are rarely the same number, and a business that simply applies 9% to its net profit without the adjustments will usually calculate the wrong liability — sometimes too high, often too low, which is the version the FTA notices.
How does free zone status change the filing?
A Qualifying Free Zone Person still files a full corporate tax return but applies a 0% rate to its qualifying income, provided it meets the conditions for the regime throughout the period. Losing QFZP status in a period pushes all of that period’s income to the standard 9% rate.
The conditions are strict and tested every year: the entity must maintain adequate substance in the free zone, earn qualifying income as defined by ministerial decision, satisfy a de minimis test on non-qualifying revenue, and prepare audited financial statements regardless of size. The de minimis rule allows non-qualifying revenue up to the lower of 5% of total revenue or AED 5 million; breaching it disqualifies the entity from the 0% rate for that year and the following four years. Because the audit is mandatory and the qualifying-income analysis is technical, free zone filers should treat the return as a specialist exercise rather than a self-service one, even though the mechanics still run through the same EmaraTax portal.
What are the penalties for late or incorrect filing?
Late filing triggers an administrative penalty of AED 500 for each month during the first twelve months and AED 1,000 per month thereafter, while unpaid tax attracts interest of 14% per year calculated monthly. The two run in parallel and are not capped.
The late-payment interest rate was fixed at 14% per annum by Cabinet Decision No. 129 of 2025, applied monthly on outstanding amounts from 14 April 2026 onward. A separate and larger penalty of AED 10,000 applies to businesses that failed to register for corporate tax on time — a distinct failure from late filing. The table summarises the main exposures.
| Failure | Penalty |
|---|---|
| Late registration | AED 10,000 |
| Late return filing (months 1–12) | AED 500 per month |
| Late return filing (month 13+) | AED 1,000 per month |
| Late payment of tax | 14% per year, charged monthly |
| Incorrect return | Variable, based on the tax shortfall |
Because interest accrues on tax rather than on the penalty, a large liability filed and paid a few months late can generate a materially bigger cost than the fixed filing penalty alone.
How should businesses prepare for the 2026 deadline?
Businesses should finalise their bookkeeping at least two months before the nine-month deadline, confirm their audit and transfer-pricing position early, and register on EmaraTax well ahead of filing. Treating the legal deadline as the target rather than the buffer is the most common and most expensive mistake.
For the largest wave of filers — companies with a 31 December 2025 year-end — the practical work should be substantially complete by mid-2026 so that the 30 September date is a formality rather than a scramble. Where Small Business Relief is being claimed for the last time, or where a free zone entity is testing its QFZP conditions, professional review before submission is worth the fee, because an incorrect regime choice is difficult to unwind after the return is filed.
Frequently asked questions
Do I still file if my company made a loss? Yes. A tax return is required regardless of profit or loss, and filing a loss preserves it for carry-forward against future taxable income.
Can I file the return myself? Yes. EmaraTax is designed for self-service, though businesses with audit obligations, transfer-pricing files, or QFZP claims usually engage a tax agent.
Is there a separate deadline to pay after filing? No. Filing and payment share the same nine-month deadline; there is no later payment window.
Sources: UAE Federal Tax Authority — Corporate Tax; UAE Ministry of Finance — Corporate Tax; Federal Decree-Law No. 47 of 2022.