With these three factors in mind, figure out how much you can save on interest during the 0% APR window compared to your existing rates. Then, calculate how much you’ll pay in interest at the standard purchase rate on a new card over the time you think it will take to pay off the remainder of the balance. Compare these numbers to what you would pay in interest at your current rate(s).
An easier way to pay: If you have debt across multiple credit cards, you might find managing all of the accounts painful. With a consolidation loan, you only have to make one payment. However, this benefit is often over-sold. The APR is still the most important consideration, and you should avoid paying a higher interest rate for the convenience of consolidation.
Next, estimate your monthly spending habits for other expenses such as gas, groceries and entertainment. Create a limit, based on your income, of what you can spend in each of the different categories of expenses. For example, if you tend to spend $400 a month on groceries, try to stick to $300 a month on groceries by making changes like buying generic brands, using coupons, and resisting impulse purchases.