Two years into the UAE corporate tax regime, the pattern of mistakes is now well-defined. We see four specific failures repeatedly across the books we are asked to clean up.
Mistake one: Qualifying Income test treated as a yes/no
Free-zone status is not a binary annual flag. The Qualifying Income test runs per revenue stream, per customer-type, per related-party flow. Treating it as a yes/no is the single largest exposure we see.
Mistake two: Transfer Pricing files left empty
Founders with two related entities (one UAE, one offshore parent, for example) often skip the Transfer Pricing documentation because no money moved. The FTA still expects a documented arm's-length position for any related-party arrangement, including services exchanged at no charge.
Mistake three: Small-business relief elected without modelling
The AED 3M small-business relief looks free; it is not. Electing it locks the entity into specific filing obligations and restricts certain group-relief options for three subsequent years. We model both paths before electing — most clients still choose the relief, but with eyes open.
Mistake four: UBO register out of date
Ultimate Beneficial Owner registrations get done at incorporation and forgotten. Any change in shareholder composition, even a 5% transfer between related parties, triggers a re-filing. Skipping this is invisible until it is found during an FTA review and treated as non-compliance.
Our annual tax retainer covers all four. If you are six months out from your first FY2026 filing and have not had a working-papers review, that is the call to make this month.