Can I resubmit my accepted paper after I withdraw it from the same journal? I have withdrawn my paper after it was accepted for financial reasons. 

Can I resubmit it to the same journal ?
That depends entirely on the journal itself. If the submission process is automated, you could just try and see what happens. But you could, and probably should, contact the editor for information, explaining the earlier withdrawal and why that isn't an issue at present. 

But, I assume some journals wouldn't like to reconsider it. And take care that it isn't a predatory journal. They might want to accept it again, but you may have better options elsewhere.