+0
Is it ok in the sentence?

Those cards that are used for payment are used for road- tolls, in public transport or cashpoints or wherever you wish to foot the bill.
+0
To foot the bill means to pay for something, usually for someone else. Like, when you're at work and you go out with a vendor to a more expensive restaurant than you normally would because his company is footing the bill.

I don't think you mean to convey that you are paying for something for someone else's benefit, do you?
Comments  
No, I simply mean whenever you wish to pay.