UAE corporate tax: who must register, and by when

Corporate tax arrived in the UAE for financial years starting on or after 1 June 2023. Most business owners know the headline: 9% on taxable profit above AED 375,000, and 0% below it. Far fewer have grasped the part that actually generates penalties, which is that registration is a separate obligation from payment.

You can owe nothing and still be in breach for failing to register. That is the single most common position we are asked to fix.

Who has to register

Registration is required for taxable persons. In practice that covers a much wider group than owners tend to assume:

• UAE mainland companies, regardless of turnover or profitability
• Free zone entities, including those expecting to qualify for the 0% rate
• Certain natural persons conducting business activity above the relevant threshold
• Branches of foreign companies with a UAE presence

A company that made a loss still registers. A company earning below AED 375,000 still registers. A free zone entity confident of its 0% status still registers. The rate determines what you pay, not whether you are in the system.

How the filing deadline is calculated

Corporate tax returns are due within nine months of the end of the relevant tax period. Your tax period normally follows your financial year, so the deadline moves with your year end rather than sitting on a fixed national date.

• Financial year ending 31 December: return due by 30 September the following year
• Financial year ending 31 March: return due by 31 December the same year
• Financial year ending 30 June: return due by 31 March the following year

Nine months sounds generous. It stops sounding generous once you account for the accounting work needed to produce a computation, particularly if your bookkeeping is not current. We start client computations well before the deadline for exactly that reason.

Small business relief

Relief is available to eligible resident businesses with revenue at or below AED 3,000,000 in the relevant and all previous tax periods, for periods running up to the end of 2026. Where it applies and is elected, the business is treated as having no taxable income for that period.

It is an election, not an automatic entitlement, and it is not always the right choice. Electing for relief means you cannot use tax losses or certain other reliefs from that period going forward. If you expect losses now and profits later, taking the relief can cost you more than it saves.

What happens if you miss it

The Federal Tax Authority applies administrative penalties for late registration, late filing and late payment. They are applied per entity, they escalate the longer the position remains open, and they are entirely avoidable.

If you are already late, the position is almost always recoverable. It just gets more expensive with every month it stays unresolved. Bringing it forward voluntarily is a materially better starting point than waiting to be contacted.

What to do next

If you are not certain whether your entity is registered, that uncertainty is itself the answer to act on. Check your status, confirm your first tax period in writing, and work backwards from the filing date.

Our corporate tax service covers registration, the taxable income computation and the return itself. If you would rather just establish where you stand, a free consultation takes about thirty minutes.