Abu Dhabi is the UAE capital and its largest emirate by land area, and it runs its own business licensing track separate from Dubai. If you have only researched Dubai company formation, several details here will be different: the licensing authority, the free zone lineup, and in some sectors, the level of government-backed investment support available.
Mainland or free zone in Abu Dhabi
Mainland companies in Abu Dhabi are licensed through the Abu Dhabi Department of Economic Development (ADDED), and — as with the rest of the UAE since the onshore ownership reforms — most commercial and industrial activities now permit 100% foreign ownership without a local Emirati partner, subject to the specific activity list.
Abu Dhabi also has a strong free zone lineup, each suited to different sectors: Abu Dhabi Global Market (ADGM) is a leading financial free zone with its own common-law framework, popular for fintech, funds and professional services. Khalifa Industrial Zone Abu Dhabi (KIZAD) suits manufacturing, logistics and industrial activity given its port access. Masdar City focuses on clean energy, sustainability and innovation-sector companies. twofour54 is Abu Dhabi media city, for media, gaming and content businesses.
Costs and timeline
Formation costs vary widely by activity, free zone, and office requirement, in the same way they do across the rest of the UAE. Rather than quote a single figure that will not fit most cases, use this site's Business Setup Cost Calculator and Formation Timeline Estimator to model your specific activity and structure.
Choosing mainland vs a specific Abu Dhabi free zone
The same core logic applies as anywhere in the UAE: mainland suits businesses that need to trade freely across the whole country and take on government contracts, while a free zone suits businesses that mostly serve international clients, want 100% ownership guaranteed by free zone law regardless of activity, or specifically need what a sector-focused zone like ADGM or Masdar City offers. This site's Free Zone vs Mainland Tool walks through the same decision with your specific activity in mind.