Are "prompt payment" and "payment on account" antonyms?
I know that there is a type of payment called "deferred payment". I think that it means "payment on account" but I'm not sure.

Question

Answer

We need context here to better understand.

Prompt payment usually means payment is due when you receive the bill.
Payment on account, I can't tell without context. But I think of a statement where they are itemizing previous payments.

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