Before you accept a credit card with a low introductory rate, find out which types of transactions the offer applies to. If the low introductory rate applies only to balance transfers and/or cash advances (and not to purchases), limit your new purchases until you pay off the transfers and the advances. This will save you money in the long run.
If you make purchases while carrying a balance, you may reduce the money you can save on your transfers and advances. There are two reasons for this.
You'll lose the interest-free period on new purchases
If you don't pay off your entire balance at the end of the first month (including all purchases, cash advances and balance transfers), you lose the interest-free period on new purchases. This means that you begin paying interest on your new purchases from the date you make them or, in some cases, from the day they are posted to your account. The interest is usually at the credit card's regular and higher rate.
Your payments will be applied to the lower-interest-rate balance first
Most institutions apply your payments to balance transfers and cash advances before they apply them to purchases. This is called the "order of transactions" related to payments.
If you make a cash advance or balance transfer at a low introductory rate, and then purchase something, you end up reducing your potential savings. This is because you're paying off the lower-interest-rate debt (your transfer or advance) first, while carrying the higher-interest-rate debt (your purchase) for a longer time.
However, the order of transactions may vary from one institution to another. Ask your credit card issuer to explain how its order of transactions applies to your payments.
In both of the following cases:
Case 1:
| Case 1: No other purchases | Outstanding balance |
|---|---|
1 $5,000 x (6% interest rate ÷ 365 [days in a year] x 31 days) = $25.47 |
|
| May 1: Balance transfer | $5,000 |
| May 31: Outstanding balance | $5,000 |
| Interest rate on balance transfer | 6% |
| Interest charged for May | $25.471 |
Case 2:
| Case 2: Additional purchase of $1,000 | Outstanding balance | |
|---|---|---|
| From the balance transfer | From the purchase | |
|
1 Balance transfer: [$5,000 x (6% interest rate ÷ 365 [days in a year] x 5 days) + $4,000 x (6% interest rate ÷ 365 [days in a year] x 26 days)] = $21.21 2 Purchase: [$0 x (18% interest rate ÷ 365 [days in a year] x 4 days) + $1,000 x (18% interest rate ÷ 365 [days in a year] x 27 days)] = $13.32 |
||
| May 1: Balance transfer | $5,000 | |
| May 5: Purchase of $1,000 | $1,000 | |
| May 6: Partial payment of $1,000 (applied to balance transfer) |
$4,000 | |
| May 31: Total outstanding balance = $5,000 |
$4,000 | $1,000 |
| Interest rate on each balance | 6% | 18% |
| Interest charged for May | $21.211 | $13.322 |
| Total interest charged for May | $34.53 | |