What you actually get
A mainland licence is issued by Dubai’s Department of Economy and Tourism — DET, still called DED on half the internet and on the old e-services host. With it you can trade with UAE customers, open branches in other emirates (with extra filings), and sit in tenders that exclude free-zone entities. You also take the compliance that comes with being ordinary: Ejari, establishment card, immigration file, FTA corporate tax if you are in scope, VAT if you cross the threshold.
100% foreign ownership covers most activities. Defence, some security, and a handful of other strategic lists still want a local partner. Formation houses that still quote 51/49 as a default are selling an old product, or they have quietly put the partner on your invoice. Ask which activity code they filed.
Office, visas, bank
Plan for a leased office and an Ejari. Virtual mainland addresses get refused by DET or by the bank, often both. Visa quota on the establishment card tracks office size — a glass cubicle does not sponsor a team of twelve. Banks like mainland trading stories more than empty free-zone consultancies, and still want a business plan, a proof of address, and a human who can explain the invoices.
If you already hold a UAE job visa, you typically need a NOC from that employer before you appear as a mainland partner. Skipping that is how people lose the day job and the new licence together.
Tax, plainly
No personal income tax on a salary. Corporate tax: 0% on taxable profit up to AED 375,000, then 9% on the rest, under the federal law. VAT 5% once taxable supplies cross the FTA registration line (currently AED 375,000 for mandatory registration — confirm on tax.gov.ae). UBO and economic-substance filings apply. A mainland company does not get the qualifying free-zone 0% story. That is the trade for local market access.
When mainland is the wrong buy
You only invoice foreign clients, you want a flexi desk, and you might qualify as a Qualifying Free Zone Person. Or you are a one-person consultant who needs a permit, not a company. Read mainland vs free zone, then free zones and freelance before you sign an annual office you will not sit in.