The Income That Is Swept Along, and the Income That Is Not

Very few businesses earn income in only one shape. A manufacturer sells scrap, a distributor charges for handling, a service company recharges an expense. None of those appear on the list of Qualifying Activities, and none appear on the list of Excluded Activities. The concept that decides where they land is ancillary, and it is defined in a single sentence that carries a surprising amount of weight.

The rule cuts both ways

This is the first thing to notice, because it is usually presented as a relieving provision. Article 2(1)(n) of Ministerial Decision No. 229 of 2025 makes any activities ancillary to the Qualifying Activities in paragraphs (a) to (m) themselves Qualifying Activities. Article 2(2)(f) makes any activities ancillary to the Excluded Activities in paragraphs (a) to (e) themselves Excluded Activities.

The test, and its two independent limbs

Article 2(4) provides that an activity shall be considered ancillary where it is necessary for the performance of the main activity, or where it makes a minor contribution to it and is so closely related to the main activity that it should not be regarded as a separate activity.

Read structurally, that is two routes. The first is necessity on its own. The second is a compound: minor contribution and close relation, both required. An activity that is genuinely necessary does not also have to be small, and a small activity does not qualify merely by being small.

What necessary means in practice

The FTA Free Zone Persons guide gives two features of an activity that is necessary for the performance of a main Qualifying Activity. It serves as a necessary supportive function to the main operation of the business rather than being a core activity or function itself. And it is seamlessly integrated, in the sense that its absence would disrupt the main operation — it is integral and cannot be detached without materially affecting how the main operations function.

The detachment question is the useful one to ask. If the stream were sold or shut down tomorrow, would the main activity carry on largely as before? If it would, the necessity limb is difficult to run.

What minor and closely related mean

On the second limb, the guide says the assessment of whether a contribution is minor should generally be based on the financial contribution of the activity compared with the total revenue of the business. Whether it is closely related depends on the specific facts.

That contrast is worth applying to a UAE free zone business directly. Handling and delivery charged as part of a manufactured supply reads differently from a standalone service sold to third parties, even where both appear in the same revenue line in the accounts.

Surplus funds are expressly not ancillary

The guide closes one route that companies reach for often. A Qualifying Free Zone Person may hold surplus funds that are not needed immediately but are retained for identified future working capital requirements rather than returned to investors. The investment of those surplus funds is not considered an ancillary activity.

There is a substance consequence attached to taking the treasury route, and the guide is explicit about it. The core income-generating activities for treasury and financing services still have to be met, and in assessing adequate employees there must be no double counting — the employee overseeing the treasury activity cannot also be counted towards the main activity.

Where a small stream does the most damage

An amount that fails the ancillary test does not simply sit outside the 0%. If it arises from a transaction with a non-free zone person and is not a Qualifying Activity, it is non-qualifying revenue, and non-qualifying revenue is measured against the de minimis cap — the lower of 5% of total revenue or AED 5,000,000.

The guide's own de minimis examples make the point starkly with sums of AED 100. A stream too small to appear in a board pack is still capable of breaking the cap for a company whose total revenue is small, and a breach removes Qualifying Free Zone Person status for that Tax Period and the four following it.

What to check

1. List every revenue stream that is not obviously on the Qualifying or Excluded Activities list, however small.
2. For each, decide which limb is being relied on — necessity, or minor contribution plus close relation — and write down why.
3. Apply the detachment question to the necessity limb: would the main activity carry on largely unchanged without this stream?
4. Identify what each stream is ancillary to, because ancillary to an Excluded Activity is itself excluded.
5. Treat interest and investment income separately, since surplus funds are expressly outside the ancillary concept and must qualify on their own footing or count as non-qualifying revenue.

Ministerial Decision No. 229 of 2025 repealed Ministerial Decision No. 265 of 2023 and takes effect from 1 June 2023. The FTA guide predates it and cites the earlier decision for the ancillary test, whose wording carried across unchanged. Confirm the position for your own facts before relying on it.