By enrolling in TD Debit Card AdvanceSM, you permit us to authorize and pay ATM and one-time debit card transactions when your available account balance falls below $50. This service applies to standard overdraft fees of up to 3 per day per account if overdrawn by more than $50. The total amount of these fees may be affected by the order in which you make transactions, with the most significant fees incurred being for transactions that are made in a specific order or within certain timeframes.