How to use this calculator
- Enter your current balance and APR from your latest card statement.
- Enter the offer’s terms: the balance transfer fee (a percentage of the amount moved), the intro APR (often 0%), how many months it lasts, and the regular APR that applies afterwards.
- Enter the monthly payment you can afford. We use the same payment in both scenarios so you’re comparing like with like.
- Check the verdict. The results show total interest and fees each way, your payoff time, and the payment needed to be debt-free before the promotion expires.
How a balance transfer works
With a balance transfer, a new card issuer pays off your existing card and moves the debt onto the new card, usually at a promotional APR of 0% for 12 to 21 months. In exchange, you pay a one-time transfer fee — typically 3% to 5% of the amount moved — which is added to your new balance.
During the promotional period, every dollar you pay reduces the principal instead of covering interest. That’s why a transfer can dramatically shorten payoff time: at 24% APR, a $350 payment on an $8,000 balance loses about $160 — nearly half — to interest in the first month; at 0%, none of it does.
Worked example
Chris owes $8,000 at 23.99% APR and can pay $350 a month. A new card offers 0% for 18 months with a 4% fee, then 24.24%.
| Item | Keep current card | Transfer |
|---|---|---|
| Fee | $0 | $320 |
| Interest paid | $2,796 | $150 |
| Time to pay off | 2 years 7 months | 2 years 1 month |
| Total cost of borrowing | $2,796 | $470 |
The transfer saves Chris about $2,326, even though $2,020 is still owed when the promotion ends. Raising the payment to $462.22 would clear the full $8,320 (balance plus fee) within the 18 months and avoid interest entirely.
When a balance transfer is (and isn’t) worth it
It usually makes sense when:
- Your current APR is high (18%+) and the balance is large enough that interest outweighs a 3%–5% fee.
- You can pay off most or all of the balance before the promotion ends.
- Your credit is good enough to be approved for a limit that covers the balance plus the fee.
- You’ve stopped adding new charges to the old card.
It may not be worth it when:
- You could pay the balance off in a few months anyway — the fee may exceed the interest you’d save.
- The promotional period is short (6–9 months) relative to your payoff time.
- You tend to run balances back up on the old card once it’s cleared.
- You need a longer, fixed schedule — a consolidation loan gives you a set payoff date at a fixed rate.
Weighing a transfer against a personal loan? Read balance transfer vs personal loan for real-number comparisons.
Rules and fine print to know
- Transfer deadline: many offers apply only to balances transferred within the first 60–120 days.
- Late payments: under the Credit CARD Act (Regulation Z §1026.55), an issuer can generally apply a penalty rate to an existing balance only after a payment is 60 days late — but some offers end the promotional rate after any late payment. Set up autopay for at least the minimum.
- Payment allocation: amounts you pay above the minimum must go to the balance with the highest APR first (Regulation Z §1026.53).
- Same issuer: you usually can’t move debt between two cards from the same bank.
- Credit limit: the amount you can transfer — including the fee — is capped by the new card’s limit, which you learn only after approval.
How we calculate savings
Both scenarios use your monthly payment and apply interest monthly at APR ÷ 12. In the transfer scenario, the fee is added to the starting balance, the intro APR applies for the promotional months, and the regular APR applies afterward.
Results are estimates. Real interest is charged daily, fees may have a minimum dollar amount, and the regular APR on most cards is variable.
Balance transfer or personal loan?
If you’re carrying credit card debt at 20%–30% APR, moving it to a cheaper form of credit is one of the fastest ways to save money. The two most common options are:
- a 0% intro APR balance transfer card, which suspends interest for a promotional period;
- a debt consolidation personal loan, which trades card debt for a fixed-rate installment loan.
Both can work well, and each can backfire. This section compares them with real numbers.
The same debt, three ways
Say you owe $8,000 at 23.99% APR. Here are three ways to handle it:
| Option | Monthly payment | Time to pay off | Total cost (interest + fees) |
|---|---|---|---|
| Keep the card, pay $280/month | $280 | 43 months | $3,978 |
| 0% balance transfer, 18 months, 4% fee, pay $463/month | $463 | 18 months | $320 |
| 0% balance transfer, pay $280/month (regular APR 24.24% after the promo) | $280 | 32 months | $821 |
| Personal loan, 12% for 36 months, no fee | $265.71 | 36 months | $1,566 |
| Personal loan, 12% for 36 months, 5% fee taken from proceeds | $279.70 | 36 months | $2,069 |
What the numbers show:
- A balance transfer is cheapest when you can pay it off during the promotion. Paying $463 a month clears it in 18 months, and your only cost is the $320 fee.
- Even if you can’t, the transfer can still win. At $280 a month, you’d still owe $3,280 when the promo ends, and it would start accruing interest at the regular APR. Your total cost would still be only $821.
- A personal loan gives certainty. You get a fixed payment and a set payoff date. The fee matters, though: a 5% origination fee turns a 12% rate into an APR of about 15.6%.
Run your own numbers with the balance transfer calculator and the debt consolidation calculator.
How each option works
Balance transfer card
- A new card pays off your old one. The balance, plus a 3%–5% fee, moves to the new card at a promotional APR, usually 0%, for 12 to 21 months.
- After that, the remaining balance accrues interest at the card’s regular APR, often 20% or more.
- You need good credit for approval, and your new credit limit caps how much you can move.
Personal loan
- A lender gives you a lump sum to pay off your cards, which you repay in fixed monthly installments over 2 to 7 years.
- Rates depend heavily on your credit: excellent credit can mean single digits, while fair credit often means 20% or more.
- Many lenders charge an origination fee of 0%–10%, taken out of the loan amount.
When is a balance transfer better?
- You can pay off most or all of the balance within the promotional period.
- Your balance fits within the credit limit you’re likely to get.
- You have good to excellent credit (roughly 670+).
- You’re disciplined about paying on time. A late payment can end the promotional rate on some cards.
- You won’t run up new charges on either card.
When a personal loan is better
- You need more than 18–21 months to pay the debt off.
- You want a fixed payment and a firm end date, with no rate jump when a promotion ends.
- Your balance is larger than a transfer card’s likely limit.
- You’re consolidating several types of debt, not just cards.
- You can find a loan with no or low origination fee at a rate well below your cards.
The hidden risks
Balance transfer risks
- The cliff at the end of the promotion. Any remaining balance starts accruing interest at the regular APR.
- Late payments. A missed payment can cancel the intro rate on some cards, and a payment 60 or more days late can trigger a penalty APR.
- New purchases. New charges may accrue interest at the regular APR. Keep the transfer card for the transferred balance only.
- Transfer deadlines. Many offers apply only to balances moved within the first 60–120 days.
Personal loan risks
- The origination fee. Always compare the APR, which includes the fee, rather than the interest rate.
- Longer terms. Longer terms lower the payment but can raise the total interest.
- Running the cards back up. This is the biggest risk with either option. Paying off your cards doesn’t erase the spending habits that filled them.
What about your credit score?
Either option adds a hard inquiry and a new account, which can lower your score slightly for a few months. After that:
- A balance transfer adds a new credit limit, which can lower your overall credit utilization, but a nearly maxed-out transfer card can weigh on the per-card ratio.
- A personal loan moves debt from revolving credit to installment debt, which often lowers utilization significantly. Utilization is one of the most important scoring factors.
See where you stand with the credit utilization calculator.
A simple decision rule
- Can you pay off the balance, plus a 3%–5% fee, within 12–21 months? Choose a balance transfer, and set the monthly payment to (balance + fee) ÷ promotional months.
- If not, compare a personal loan’s APR with what you’d pay on the transfer after the promotion ends. Choose the lower total cost, not just the lower payment.
- If you qualify for neither, focus on a disciplined payoff plan, such as the avalanche or snowball method (try the debt payoff calculator). Consider a nonprofit credit counseling agency, which may be able to arrange lower card rates through a debt management plan.
Price a loan offer, including its origination fee and true APR, with the personal loan calculator.
Sources:
- CFPB: credit cards
- Regulation Z §1026.53 (allocation of payments)
- Regulation Z §1026.55 (limits on rate increases)
Frequently asked questions
Is a balance transfer worth the 3%–5% fee?
What happens if I don’t pay off the balance before the intro APR ends?
How much do I need to pay each month to clear it during the promotion?
Will a balance transfer hurt my credit score?
Can I transfer a balance between two cards from the same bank?
Should I use the new card for purchases?
Sources
- Credit cards — consumer tools and answers — Consumer Financial Protection Bureau
- Regulation Z §1026.53 — allocation of payments — Consumer Financial Protection Bureau
- Regulation Z §1026.55 — limitations on increasing APRs — Consumer Financial Protection Bureau