The Free and Near-Free Things Are Genuinely Good
The Dubai Fountain show is free. Public beaches don't charge entry. Crossing Dubai Creek by traditional abra boat costs a fraction of what a taxi would — and it's one of the more memorable things to do in the city regardless of budget.
Old Dubai Is Where Your Money Goes Further
Food, souvenirs and even some accommodation in Deira and Bur Dubai cost meaningfully less than the Downtown and Marina areas — and it's arguably the more culturally interesting part of the city anyway, not just the cheaper one.
The Metro Is Your Budget Backbone
A day exploring by Metro costs a small fraction of relying on taxis everywhere, and it reaches most of the sights budget travelers actually want — Downtown, Old Dubai's edges, and the Marina.
Where the Budget Trip Breaks Down
Be honest with yourself about two things: paid attraction tickets (Burj Khalifa's top floors, theme parks) add up fast if you try to do several, and dining inside Downtown or Marina tourist zones is genuinely expensive regardless of how carefully you're spending elsewhere.
A real budget trip to Dubai is possible if you lean on free attractions, eat and shop in Old Dubai rather than Downtown, and are selective about which one or two paid attractions actually matter to you — trying to do everything on a budget here is where it falls apart.