This is the most valuable lesson in the course, and it is about a limitation.

Cabinet Decision 100/2023 Art. 4(2) defines non-qualifying revenue across three limbs. The Corporate Tax report computes two of them and tells you plainly that it does not compute the third.

1. Excluded Activities — computed. Counted whoever the customer is.
2. Non-qualifying activities sold to a Non-Free Zone Person — computed, from the income classification defaulted through product category, then account, then fiscal position. Where an activity is neither a Qualifying nor an Excluded Activity, leave the product category unclassified so the fiscal position decides it by customer.
3. Transactions with a Free Zone Person that is not the Beneficial Recipient — not computed. This one needs manual review.

The reason is not an engineering gap. Whether a customer carries an onward contractual or legal obligation to supply the same goods or services to somebody else is not in the ledger. A conduit sale looks exactly like an ordinary free-zone sale in every field an accounting system holds, so it cannot be detected automatically. No amount of software extracts a fact that was never recorded.

The consequence follows: the figure the report gives you is a floor, not a ceiling. It is the smallest your non-qualifying revenue can be. Passing on the reported figure is not passing the test — it is passing the computable part of the test. And revenue you have not classified at all is reported separately as unclassified; while any of it remains, the outcome is shown as indeterminate rather than guessed.

A report that says it does not know is worth more than one that guesses. An indeterminate result is an instruction: go and classify. A guessed pass is a number somebody would have relied on, and nobody would have known to check it.

Worked example — the passing result that fails. A free-zone company has total revenue of AED 60,000,000. Its de minimis limit is the lower of 5% of 60,000,000, which is 3,000,000, and the fixed 5,000,000 — so AED 3,000,000. The report shows computed non-qualifying revenue of AED 2,400,000, apparently inside the limit with AED 600,000 to spare.

One customer is a free-zone trading company that buys AED 900,000 of goods under a back-to-back contract and ships them straight on to a mainland buyer. It is not the Beneficial Recipient, so limb 3 adds that AED 900,000: true non-qualifying revenue is AED 3,300,000, the limit is breached, and the status goes for that period and the four after it. Nothing on the screen was wrong. The screen never claimed to know.

The review to run before you rely on any result:

1. List every Free Zone Person customer in the period, with the revenue from each.
2. For each, establish whether they take the goods or services for their own use or pass the same ones on. The question is about an onward obligation, not about what the customer happens to do afterwards.
3. Take the answer from the contract or the purchase order, in writing, rather than from a phone call.
4. Add any conduit revenue to the computed figure before you compare it with the limit.
5. Clear the unclassified bucket to zero. While it holds anything, the outcome is indeterminate and there is no result to rely on.