[autoxer]

Originally Posted by vishenda

So now you have a 0 interest credit card with twelve months to pay it off. For whatever reason, your expected financial windfalls don't come through, or required purchases offset your balance payments and your balance remains constant at $1,000 after a year. Because you've got average credit, your APR starts at 22%, adding $220 to your balances the first month, and more thereafter. You miss some payments, bringing your APR up to almost 33%. At this point, a full third of your balances are being added on to your debts every month, and you may start looking around for still more 0% APR credit cards for salvation

Just to clarify, it would add $220 to your balances over a year, not each month.