In short
Article 18(4) of the Corporate Tax Law applies the 0% rate for the remainder of the tax incentive period stipulated in the legislation of the free zone where the company is registered. That period may be extended under conditions set by Cabinet decision, but any one period cannot exceed fifty years.
Ask how long a UAE free zone company keeps the 0% rate and the usual answer is fifty years. That number is in the Law, but it is a ceiling on a period, not the period itself. The actual clock is set somewhere else entirely, and it is not set federally.
What Article 18(4) says
Article 18(4) provides that the 0% rate under Article 3(2)(a) applies to a Qualifying Free Zone Person for the remainder of the tax incentive period stipulated in the applicable legislation of the Free Zone in which that person is registered. That period may be extended in accordance with conditions determined in a Cabinet decision issued at the suggestion of the Minister, but any one period shall not exceed fifty years.
Why the answer differs between two identical companies
Two free zone companies with the same activity, the same substance and the same qualifying income can have different answers to this question, for two reasons that have nothing to do with tax.
The first is the zone. Each free zone is established under its own legislation, and it is that legislation which stipulates the tax incentive period. Different zones were established at different times under different instruments, so the periods they carry are not uniform.
The second is timing. Article 18(4) refers to the remainder of the period, which means the entitlement is a countdown rather than a fresh grant. Incorporating into a zone whose incentive period is well advanced buys the balance, not a new term.
How this differs from the other ways the 0% ends
It is worth separating the incentive period from the conditions, because they fail in completely different ways and businesses tend to conflate them.
The conditions in Article 18(1) are tested continuously, and failing one at any particular time during a Tax Period removes the status from the beginning of that period and for the four that follow. That is a status loss with a five-period consequence and a route back afterwards.
The incentive period is a different mechanism. It is not something a company fails; it is something that runs out. When it ends, Article 18(4) simply stops applying the 0% rate, and the extension route is a Cabinet decision rather than anything the company can put right by improving its own compliance.
Related guideFree Zone 0% Corporate Tax: The QFZP Conditions ExplainedWhat this means for a structuring decision
For a group choosing where to place a UAE entity, the incentive period belongs in the comparison alongside licence cost, activity permissions and substance requirements. A zone offering a longer remaining period is offering a materially different thing from one whose period is close to expiry, even though both deliver the same rate today.
It also belongs in any model that runs beyond a few years. A five-year projection that assumes 0% throughout is assuming an incentive period that has not been checked, and the assumption is easy to verify at the outset and awkward to correct later.
Related guideMainland vs Free Zone: Choosing the Right Company Setup in the UAEWhat to check
- Identify the legislation establishing the free zone where the entity is registered, and read the tax incentive period it stipulates.
- Establish when that period started, because Article 18(4) gives you the remainder rather than a fresh term.
- Record the expiry date somewhere it will be seen again — a licence file, not a memo.
- Keep the incentive period separate from the Article 18(1) conditions in any risk register: one runs out, the other is failed, and the remedies are not the same.
- Where a model runs past the expiry date, price the years beyond it at the standard rates rather than carrying 0% forward by default.
This article states the federal rule in Article 18(4). It does not state the incentive period for any particular free zone, because that comes from each zone's own legislation and has to be read there. Confirm the position for your own entity before relying on it.
Key takeaways
- Article 18(4) applies the 0% rate for the remainder of the tax incentive period stipulated in the applicable legislation of the free zone where the company is registered.
- The duration is therefore set by the free zone's legislation, not by the Corporate Tax Law, and it is not uniform across zones.
- The word remainder matters: registering into an established zone inherits a clock already running rather than starting a new term.
- The period may be extended in accordance with conditions determined in a Cabinet decision issued at the suggestion of the Minister.
- Fifty years is a cap on any one period, not an entitlement — the Law says any one period shall not exceed fifty years.
- Running out of incentive period is a different mechanism from failing an Article 18(1) condition, which removes status for that Tax Period and the four following.
- There is no federal table of free zone incentive periods, so a single number quoted for all zones has skipped the primary source.
- The expiry date belongs in any financial model that runs beyond a few years, and in the comparison when choosing between zones.