Amex Credit Card Agreement
You cannot use SUPERCHECKS cheques to make payments to this account. As a general rule, we first apply your minimum payment to lower annual interest balances (e.g.B purchases) before balances with higher actual annual interest (e.g. B cash advances). Payments that go beyond the minimum payment are applied first to balances with higher peaks, before to lower balances. We count payments in the billing cycle in which they are received.. . .