Payment has to be turned in on day of deadline?

<p>If a school only requires the supplement to be submitted before you can submit the application, does that mean you still need to submit the payment on/before the deadline?
Or can you submit the application, and turn in the payment a few days later?</p>

<p>I have a fee waiver, but it doesn't have the signature of my counselor. Which means, I can't send in my payment. Although I realize I could pay with credit card, it would be my last option.</p>