A balance transfer card lets you move debt from one or more credit cards onto a new card with a low or 0% promotional rate. Used well, it can stop interest for more than a year and help you pay off the balance much faster. Used badly, it adds a fee, a new card and, eventually, the same debt at a high rate.
This guide explains how balance transfers work, what they cost and how to work out whether one makes sense for you.
How a balance transfer works
You apply for a card that offers a promotional rate on transferred balances. If you’re approved, the new card pays off some or all of your old card balances, and that debt now sits on the new card. During the promotional period, often somewhere between 12 and 21 months in the US and sometimes longer in the UK, you pay little or no interest on the transferred amount.
When the promotion ends, any balance left starts collecting interest at the card’s standard rate, which is usually similar to ordinary card APRs.
The costs to watch for
- Transfer fee. Most cards charge a one-off fee of around 3% to 5% of the amount moved. On $6,000, a 3% fee is $180. It’s usually added to your new balance.
- Standard APR after the promotion. This is what you’ll pay on anything left when the 0% period ends.
- Purchase rate. On many cards, new purchases are not covered by the 0% offer. Avoid using the card for spending.
- Losing the promotion. On many cards, a missed or late payment can end the promotional rate early. Read the terms carefully.
A worked example
Suppose you owe $6,000 at 24% APR and you can afford about $343 a month.
Option A: keep the debt where it is. Paying $343.33 a month, the balance is cleared in 22 months and you pay about $1,457 in interest.
Option B: transfer to an 18-month 0% card with a 3% fee. The fee adds $180, so the new balance is $6,180. Divide that by 18 months and you need to pay $343.33 a month to clear it before the promotion ends. Total cost: the $180 fee and nothing else.
| Stay at 24% APR | 18-month 0% transfer (3% fee) | |
|---|---|---|
| Monthly payment | $343.33 | $343.33 |
| Months to pay off | 22 | 18 |
| Interest and fees | $1,457 | $180 |
Same payment, four months sooner, and about $1,277 saved. That’s the best case for a balance transfer: you know the payment you can afford, and it’s enough to clear the full balance during the promotion.
What if you can’t clear it in time?
Now suppose you can only pay $250 a month on the transferred $6,180. After 18 months you’ve paid $4,500, and $1,680 is left. That remainder starts collecting interest at the card’s standard rate, say 24%. At $250 a month it takes another 8 months and about $143 of interest to clear.
Even in that case, the total cost of about $323 (fee plus interest) is far below what the original card would have charged. A balance transfer can still save money when you don’t finish in time, as long as you keep paying and don’t add new spending.
Where it goes wrong is when the 0% period creates a false sense of calm. If payments are only the minimum during the promotion, most of the balance is still there when it ends, and you’re back to paying high interest on nearly the full amount.
How to work out your monthly target
Use this simple formula:
Monthly target = (transfer amount + fee) ÷ number of promotional months
For $6,000 with a 3% fee over 18 months: ($6,000 + $180) ÷ 18 = $343.33. If that figure is affordable, the transfer is likely to save you a lot. If it’s far beyond your budget, a longer promotional period or a debt consolidation loan with a fixed end date might suit you better.
Who usually gets approved
The best balance transfer offers generally go to people with good credit. If your score has dropped because of high balances or missed payments, you might be approved for a shorter promotion, a lower credit limit or not at all. A lower limit can mean only part of your debt moves across.
Many card issuers offer an eligibility checker that uses a soft search, which doesn’t affect your credit score. Using one before you apply can help you avoid a hard credit check for a card you’re unlikely to get.
Balance transfer checklist
- Write down your current balance, APR and the payment you can afford.
- Compare cards by promotional length, transfer fee and standard APR.
- Calculate your monthly target with the formula above.
- Check how long the transfer offer applies after opening. Some cards require the transfer within the first 60 or 90 days.
- Set up an automatic payment for at least your monthly target.
- Don’t use the new card or the old card for spending.
- Put a reminder in your calendar a month before the promotion ends.
When a balance transfer is not a good idea
- You expect to keep using credit cards for everyday spending.
- The fee is high and your balance is small enough to clear in a few months anyway.
- You can’t afford a payment much above the minimum, so most of the balance will still be there at the end.
- Your credit score is likely to mean a rejection, which can lower your score further.
Run the numbers yourself
Enter your current balance and APR into the credit card payoff calculator to see what staying put will cost. Then compare that figure with the transfer fee on the card you’re considering. If the interest you’d save is several times the fee, and your monthly target is affordable, a balance transfer is worth a closer look.
Example figures assume a constant APR, monthly interest at APR ÷ 12, on-time payments and no new spending. Card terms vary, so always read the full terms before applying.
This guide is general education, not personal financial advice. For advice about your situation, talk to a qualified, licensed professional.
