I say budget properly and don't go on more dates than you can afford. You should be paying for drinks if you take a girl out to a bar. If after a drink or two you aren't really vibe-ing with her, then let her pay, but if you like the girl, you should be paying.
Just my two cents. Letting her pay (with anything short of a LOT of resistance on her part) signifies, in this society anyway, that you are either cheap or broke. Neither is good.
If she's one of those girls that doesn't take no for an answer and INSISTS on paying even after you repeatedly tell her you will, ding ding, you have a winner.