Short answer: often yes, but not always. Moving an $8,000 balance at 22% APR to a card with a 3% fee ($240) and a 15-month 0% promo, then 24% APR, while paying $450 a month, cuts total interest from $1,770.45 to $68.10, so you keep $1,462.35 after the fee and break even in month 2. The fee is not worth it when your current card would charge less interest during the promo than the fee costs, or when a large balance is still left once the post-promo APR starts.
Why a balance transfer can save money, and when it does not: A balance transfer swaps the interest your current card charges for a one-time fee and, during the promo months, no interest at all. It saves money when the interest you avoid during the promo is larger than the fee plus any interest charged after the promo ends. It does not pay when the promo is short, the fee is high, your current APR is already low, you pay slowly, or a large balance is still left when a higher post-promo APR starts.
Use the balance transfer calculator below to enter your balance, current APR, transfer fee, promo length, post-promo APR, and monthly payment. It shows whether the transfer saves money, your breakeven month, interest saved, net savings after the fee, and a month-by-month comparison.
All figures are estimates that assume no new purchases, no late payments, no annual fee, rates that stay the same, the fee added to the transferred balance, and the same payment made at the end of each month in both scenarios. Your card's real terms may differ. This is not financial advice.
How to use this calculator
Enter your current card and the offer. Enter your current card balance and APR, then the offer's balance transfer fee, 0% promo length in months, and the APR after the promo ends, using the slider or the number box for each field.
Set your monthly payment. Enter the amount you plan to pay each month. The calculator uses the same payment for both options, so the comparison is fair.
Read the verdict and KPI cards. Check whether the transfer saves money, then read the total interest saved, the breakeven month, and the net savings after the fee. The results update as you type.
Review the month-by-month comparison. Open the comparison table to see each month's balance and costs for both options, or download it as a CSV file.
Check your real offer. Confirm the fee, promo length, post-promo APR, and transfer deadline in the card's terms before you apply. Approval and terms are set by the card issuer.
Balance Transfer Calculator
Compare keeping your balance on your current card with moving it to a 0% intro card, fee included, at the same monthly payment.
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Total interest saved
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Breakeven month
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Net savings after fee
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Interest · stay
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Total paid –
Interest · transfer
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Total paid –
Transfer fee
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Added upfront
Payoff · stay
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Months to pay off
Payoff · transfer
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Months to pay off
Last 0% month
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Month-by-month comparison
Estimates only, not financial advice. Assumes no new purchases, no late payments, no annual fee and no rate changes, the same fixed payment in both scenarios, and that the fee is added to the transferred balance. Card terms vary; check your offer’s fee, promo length and post-promo APR.
Next step: before you apply for a transfer, confirm the card’s real fee, promo length, post-promo APR, and transfer deadline. The guide below covers what to check.
How the balance transfer breakeven math works
The calculator runs two scenarios side by side with the same monthly payment. In the first, you keep the balance on your current card and pay its APR every month. In the second, the transfer fee is added to the balance upfront, you pay no interest during the 0% promo months, and the post-promo APR applies to whatever is left after that.
Total interest saved is the current card's interest minus the transfer card's interest, before the fee.
Net savings after fee is the interest saved minus the fee. It is the number that tells you whether the transfer pays.
Breakeven month is the first month in which the fee plus the transfer card's interest so far is no more than the interest the current card would have charged so far.
Worked examples
These results come from this calculator. Each row uses the same monthly payment for both options.
For the first example ($8,000, 22% APR, 15-month promo, 24% after, $450 a month), here is what different fees do:
Net savings by transfer fee (estimates)
Fee
Fee amount
Transfer interest
Net savings after fee
Breakeven
0%
$0.00
$49.33
$1,721.12
Month 1
3%
$240.00
$68.10
$1,462.35
Month 2
4%
$320.00
$74.70
$1,375.75
Month 3
5%
$400.00
$81.29
$1,289.16
Month 3
Each extra point of fee costs a little more than the fee itself, because the post-promo APR also applies to the added fee. Going from 3% to 4% lowers net savings by $86.60. In this example the transfer would still save money with any fee up to 19.35%, so here the fee alone is not what decides the result. The promo length, your payment, and the post-promo APR matter just as much.
Is a 3% balance transfer fee worth it?
A quick way to judge a fee is to compare it with the interest your current card charges. In the first example, the $240.00 fee equals about 1.64 months of current-card interest ($146.67 in the first month), which is why the transfer breaks even in month 2. Over the 15 promo months alone, the current card would charge $1,567.06, about 6.5× the fee.
Based on these results, a 3% fee tends to be worth it when both of these hold:
The interest your current card would charge during the promo months is clearly larger than the fee.
You pay off a large share of the transferred balance before the promo ends. In the first example, 82% of it is paid off during the promo.
The same 3% fee does not pay on an $8,000 balance at 12% APR with only a 6-month promo and a 24% APR afterwards: that transfer costs $271.12 more, because only 33% of the balance is paid off during the promo. With a 12-month promo instead, the same transfer saves $386.14.
When a balance transfer does not save money
The promo is short. In the $8,000, 12% APR, 6-month promo example, most of the balance is still owed when a 24% post-promo APR starts, and the transfer costs $486.44 more.
The fee is high compared with the interest you avoid. In that same example, the highest fee that would still save money is just 0.44%, so a 5% fee loses.
Your current APR is low or 0%. With no interest on the current card, the fee and any post-promo interest are pure cost: the 0% APR example never breaks even and costs $308.10 more.
You fall behind after the promo. A transfer can be ahead for a while and then lose its lead once a higher post-promo APR kicks in. In the 6-month promo example it breaks even in month 6, then falls behind again from month 7 and stays behind. The calculator flags this.
You pay slowly. Smaller payments leave more of the balance for the post-promo APR. A $3,000 balance at 12% APR moved with a 5% fee to a 6-month promo and a 29% APR afterwards, paid at $300 a month, never catches up and costs $69.98 more.
You miss a payment or keep spending. A late payment can end the 0% promo early under many card agreements, and new purchases may not get the promo rate. The calculator assumes neither happens.
Check your real offer before you apply
Enter the numbers from the actual offer, not a typical one. Look for the balance transfer fee (and any minimum fee), how many months the 0% promo lasts, the APR that applies after it ends, and how soon after opening the account a transfer must be made to qualify. Approval, your credit limit, and the final terms are set by the card issuer, and the limit you get may be lower than the balance you want to move.
Methodology and assumptions
Current card: each month, interest is the balance × APR ÷ 12, rounded to the cent, and then the fixed payment is applied.
Transfer: the fee is a percentage of the balance, added to the balance upfront. Interest is 0% for the promo months and then the post-promo APR ÷ 12 per month.
Same payment in both scenarios, made at the end of each month. The final payment is only what is left.
No new purchases, no late payments, no annual fee, no minimum-payment rules, and rates that stay the same.
Months are counted from the transfer, so month 1 is the first payment. No calendar dates are used.
Rounding: the KPI cards round to whole dollars, so $1,462.35 shows as $1,462.
Treat every result as an estimate. Your card's actual interest method, fees, and terms may differ.
Balance transfer calculator FAQ
Is a 3% balance transfer fee worth it?
Often, but not always. Moving $8,000 at 22% APR to a card with a 3% fee ($240), a 15-month 0% promo, and 24% APR afterwards, while paying $450 a month, saves an estimated $1,462.35 after the fee and breaks even in month 2. The same 3% fee on an $8,000 balance at 12% APR with only a 6-month promo costs $271.12 more. A fee tends to be worth it when your current card would charge clearly more interest during the promo than the fee, and you can pay off most of the balance before the promo ends.
How does a balance transfer work?
You move debt from one or more credit cards to a different card, usually one with a 0% promo APR for a set number of months. The new card pays off the old balance and adds a one-time transfer fee, and you then make monthly payments to the new card. In the default example, an $8,000 balance with a 3% fee becomes $8,240.00 on the new card, and anything still owed when the promo ends is charged the post-promo APR.
What monthly payment pays off a balance transfer before the 0% promo ends?
Divide the transferred balance, including the fee, by the number of promo months. In the default example, $8,240.00 over 15 months is $549.34 a month, which clears the card inside the promo with $0.00 of transfer-card interest and $1,152.09 saved after the fee. At $450 a month, $1,490.00 would still be owed when the promo ends and would start to be charged the post-promo APR.
Can you transfer a balance between cards from the same bank?
Usually not. Many card issuers do not allow balance transfers between two cards they issue, so the 0% offer typically needs to come from a different issuer than the card you owe. Rules vary, so check the offer terms or ask the issuer before you apply.
How is the balance transfer breakeven month calculated?
The calculator adds up, month by month, what each option has cost you so far. For the transfer that is the fee plus any interest; for your current card it is the interest. The breakeven month is the first month in which the transfer has cost you no more than staying would have. If your current card would charge less total interest than the fee, the transfer never breaks even.
What happens when the 0% promo period ends?
Any balance still on the card starts to be charged the post-promo APR, which can be higher than the APR on your current card. That is why paying off as much as possible during the promo matters. In the default example, 82% of the transferred balance is paid off during the 15-month promo, so the transfer card charges only $68.10 in interest in total.
Does a balance transfer hurt your credit score?
It can affect it, usually in more than one direction. Applying for a new card typically leads to a hard inquiry, and a new account lowers the average age of your accounts, which may lower your score for a while. Paying the balance down can help over time. The effect depends on your whole credit profile, and this calculator does not estimate it.
Can I transfer a balance to a card with no transfer fee?
Some cards have offered balance transfers with no fee, but they are less common and terms change, so check the current offer. In the default example, a 0% fee would raise net savings to $1,721.12 and break even in month 1, compared with $1,462.35 and month 2 at a 3% fee. Even with no fee, a short promo or a high post-promo APR can still make a transfer cost more.
Is a balance transfer or a personal loan better for paying off credit card debt?
A balance transfer can cost less if you can pay off most of the balance during the 0% promo. A personal loan usually has a fixed rate, a fixed payment, and a set end date, which can suit a balance that will take longer to clear, but some loans charge an origination fee. Compare the total cost of each option; this calculator models only the balance transfer.
What happens if I miss a payment on a balance transfer card?
Under many card agreements, a late or missed payment can end the 0% promo early, add a late fee, and in some cases trigger a higher penalty APR. Any of these can wipe out the savings shown here, because the calculator assumes no late payments. Check your cardholder agreement and consider setting up automatic payments.