There are some rare exceptions but, most likely, you will not have to pay for the charge first. Below are some scenarios.
If the credit posts to your account before the end of the period that includes the charge:
- The credit may be applied to your last statement bill if the payment due date has not been reached. In this case, you will get the credit before the charge.
or
- The credit may be applied to the current billing period that includes the charge, thereby canceling it simultaneously.
If the credit posts to your account after the end of the period that includes the charge:
- The credit will be applied to the statement period that included the charge, thereby canceling it simultaneously.
or
- The credit will be applied to the statement period after the charge. This is unlikely and the only instance in which you would pay, then get effectively reimbursed.