Mainland or Free Zone: The Core Decision
Before anything else, you need to decide where your company will be licensed: mainland, through the relevant emirate's economic development authority, or a free zone, one of the dozens of dedicated business zones spread across the UAE.
A mainland company can trade directly with anyone, anywhere in the UAE, including government entities and other mainland companies, with no restrictions on where your clients or suppliers are based. Since the federal ownership reforms took effect, most business activities now allow 100% foreign ownership on the mainland, meaning you no longer need a UAE national to hold 51% of the company just to operate there. A handful of "strategically important" activities (things like certain security, oil and gas, or banking-adjacent businesses) still carry local ownership or local partner requirements, so it's worth confirming your specific activity before assuming full ownership applies. In Dubai, mainland licensing runs through the Department of Economy and Tourism (DET). In Abu Dhabi, mainland licences are now issued through the Abu Dhabi Registration Authority (ADRA), which operates as the unified licensing arm of the Department of Economic Development (ADDED) for both the mainland and the emirate's non-financial free zones.
A free zone company is generally faster and cheaper to set up, comes bundled with office space (from a shared flexi-desk up to a private suite, depending on the package), and, in most zones, gives you full ownership by default since that was never restricted to begin with. The trade-off is the same one that applies to freelance permits: a free zone licence is built around clients outside the mainland market, so invoicing UAE mainland companies directly can require routing through a distributor or opening an additional mainland presence, depending on your activity and zone.
As a simple rule of thumb: if most of your revenue will come from other UAE mainland businesses or government contracts, mainland is usually worth the extra cost and setup time. If your clients are mostly international, or you're building something asset-light like consulting, software, or e-commerce, a free zone is often the lower-cost, lower-friction starting point, with the option to add a mainland branch later if you win enough local business to justify it.