Limited liability is the primary structural advantage. The parent company's liability is limited to its capital contribution to the subsidiary.
Banking is generally easier for subsidiaries. Banks typically find it easier to onboard a subsidiary than a branch.
Corporate governance is required. A subsidiary needs its own governance structure - board, management appointments, and shareholder meetings.
Transfer pricing applies. Transactions between the parent and subsidiary are subject to transfer pricing rules under UAE corporate tax regulations.
The subsidiary is a separate taxable person. Under UAE corporate tax, a subsidiary is treated as its own taxable person - separate registration, separate filing, and separate tax treatment.