For example, you start with a $2000 balance of which $1000 is at 0%. You then charge $2000. In the middle of your cycle, you make a $1500 payment. The payment would then first go to your $1000 (previous balance) at the regular interest rate then it will pay off $500 of the 0% interest. When you are done, you would only have $500 at 0% interest. I have just gone through this with Chase and spent hours on the phone with several customer service reps. The only way to prevent this is to wait until the next billing cycle to pay that amount, that way the charges show up in the higher interest amount. The bad part is at that point it will start earning interest.
I've had good luck calling them when I've seen others get this offer. Even though they did not send me anything, they went ahead and gave me the same offer. I'm not sure, but I haven't seen this for a while.
The way to avoid paying any interest on this card is to pay off
before the due date the difference between the "total amount due" and the amount that is in the 0% interest Disney Vacation promo.
Beginning at 0.00
You charge 6000.00 paying off your cruise
You make other purchases totalling $2552.55
When the billing cycle ends on let's say the 21st of THIS mont your "total amount due" is 8,552.55 payable, let's say the 15th of next month. On the 24th you buy a widget for $200.00 so now your balance is 8,752.55.
If you pay 2552.55 before the 15th you will not incur ANY finance charges (becasue of the 0%), leaving the 200.00 for the next month.
HOWEVER if you pay $2,752.55 BEFORE the 15th (thinking you are paying of the widget) then the following month your balance will be $6000.00 BUT it will be broken down differently
$200.00 that you still owe for the widget
and your 0% balance will have dropped to $5800.00
In the above example, based on the assumption that all you used the card for was the widget, if you pay it off before the next DUE date, then your balance will now only be the $5800.00 in the 0% offer.
The way I make sure I don't incurr any interest charges is:
Pay the minimum payment due two days after the closing date of the bill.
Pay the difference between "disney balance" minus new charges minus the minimum payment already made 4 days before the due date.
Hope that makes sense...