Pay Off Card Debt With a Balance Transfer?

A balance transfer can help pay off credit-card debt by moving it to a card with a lower promotional APR, but it does not erase the debt and may add a transfer fee. This calculator estimates the monthly payment needed to clear a transferred balance within a chosen payoff period, plus the total paid and interest under the APR you enter.

Formula

The calculator treats the balance-transfer fee as an addition to the amount being repaid, then calculates an equal monthly payment that amortizes that amount over the selected number of months.

• B = balance transferred, in dollars.
• f = transfer fee as a percentage.
• P = starting payoff balance, in dollars: P = B × (1 + f / 100).
• APR = annual percentage rate entered as a percentage; the monthly rate is r = APR / 1200.
• n = payoff period in months: n = years × 12.
• M = monthly payment, in dollars: M = P × r / [1 − (1 + r)⁻ⁿ].
• Total paid = M × n. Estimated interest = total paid − P.

When APR is zero, the payment is simply P divided by n. The displayed formula has a zero-rate edge case: mathematically, use that division rather than evaluating the fraction at r = 0. The estimate assumes the fee is added to the balance and that the same APR applies throughout the payoff period.

Worked Example

Using the defaults—$5,000 transferred, a 3% fee, 0% APR, and one year—the fee is $5,000 × 0.03 = $150, so the starting payoff balance is $5,150. A zero-rate payoff over 12 months gives a monthly payment of $5,150 ÷ 12 = $429.166…, or $429.17 when rounded to cents.

Total paid using that rounded payment is $429.17 × 12 = $5,150.04. Estimated interest is $5,150.04 − $5,150 = $0.04, a rounding difference rather than meaningful interest. A real card may adjust the final payment by a few cents. The calculator’s payment expression uses the standard positive-rate amortization formula; at a zero APR, use the zero-rate calculation shown above.

Assumptions

• The APR stays fixed for the entire payoff period, even though an actual promotional APR may end or other terms may apply.
• Payments are equal and made monthly; the model does not account for a specific due date or daily balance method.
• Interest is approximated as monthly compounding at APR / 12.
• The fee is a one-time percentage of the transferred balance and is added to the amount repaid.
• No additional purchases, late charges, annual fees, taxes, or other account charges are included.

How a Balance Transfer Works

A balance transfer moves some or all of an existing card balance to another credit-card account. The receiving card may offer a temporary promotional APR on transferred balances. During that period, payments reduce the balance according to the account’s terms, while any remaining balance may become subject to a different APR when the promotion expires. Read the offer’s written terms for the promotional duration, the rate afterward, eligible balances, transfer deadline, and fee.

A transfer is not the same as paying the old debt off with cash. The debt shifts to a new account, and the original account may still have a balance if the transfer is partial, if interest posts before it clears, or if new transactions are made. Continue making required payments on the original account until the transfer is confirmed and its balance is updated.

Choosing Inputs and Reading the Estimate

Enter the amount you expect to transfer, the stated fee percentage, the APR that applies during the period you want to model, and a target number of months. If the promotional rate is 0%, enter zero; use the straight-line calculation described above. For a nonzero rate, the calculator estimates the level payment required to repay the balance in that time.

• Use the actual transfer fee in the offer, not an assumed fee. Check whether the fee has a minimum or other condition; this simple calculator models only a percentage.
• For a payoff plan that may cross the promotional end date, this one-rate estimate is insufficient. Calculate the promotional period and later period separately using the applicable terms, or use a tool that supports changing rates.
• Try a shorter payoff period to see how the required payment changes. A shorter term generally means a higher monthly payment, while a longer term leaves more time for interest to accrue.
• Compare the estimated total with the original-card payoff cost only if you have reliable APR, balance, payment, and timing information for both scenarios. The calculator does not model the old card.

For example, a 3% fee on $5,000 adds $150 immediately. A 0% promotion would not charge modeled interest during the modeled period, but the fee remains a real cost. If the transfer is not fully repaid before the promotional rate ends, the remaining amount may accrue interest at the rate specified in the account terms.

Costs, Timing, and Common Problems

Transfer fees are commonly expressed as a percentage of the transferred amount, but the exact fee and any minimum should be verified in the offer. If a fee is charged separately rather than added to the balance, the amount financed differs from this calculator’s assumption. A promotional APR may also apply only to qualifying transfers made within a specified window; transfers can take time to process, so check the account’s instructions and keep paying the existing creditor as required.

Another frequent misconception is that a 0% APR means a transfer costs nothing. A fee can apply even when the promotional APR is zero, and interest can apply to a balance left after the promotion according to the agreement. Missing a payment or making new purchases can also affect the practical outcome; purchase balances may have separate terms. Avoid relying on a transfer to make new spending affordable: adding purchases makes the payoff harder to estimate and can leave debt on both accounts.

The estimate is not a guarantee of approval, a promised credit limit, or a prediction of how a particular issuer will treat payments. The receiving account’s terms determine eligible amounts, fees, APRs, and payment allocation. Check those terms directly, and verify the transferred balance after processing.

Frequently Asked Questions

Does a balance transfer pay off my credit-card debt?
It pays the old creditor for the amount successfully transferred, but the debt remains owed on the receiving card. Any amount not transferred remains on the old account.

Is a 0% balance transfer free?
Not necessarily. A transfer fee may be charged even at 0% APR. The offer’s terms determine the fee and any other applicable charges.

What happens if I do not pay off the balance before the promotional APR ends?
The remaining balance may accrue interest at the APR and under the terms stated for the account. Check the offer rather than assuming the promotion will continue.

Should I close my old credit card after a transfer?
This calculator cannot determine whether closing an account is appropriate. The transfer itself does not require the old account to be closed; consider account terms and your circumstances before making that decision.

Can I transfer a balance between cards from the same issuer?
Eligibility depends on the issuer’s rules and the specific offer. Check the terms or contact the issuer; do not assume that every balance or account qualifies.

This result is an estimate for educational purposes; the lender’s disclosure gives the exact figures.

Related

• Argos Deferred Interest: How It Works and What to Check
• Deferred Interest Accounting: How It Works
• Deferred Interest Amount: How It Builds Up

in bal | Balance to transfer | $ | 5000 | 0 | 100000000
in apr | Interest rate (APR) | % | 0 | 0 | 100
in fee | Transfer fee | % | 3 | 0 | 100
in yrs | Payoff period | years | 1 | 0.0833 | 50
out pmt | Monthly payment | $ | (bal * (1 + fee / 100) * (apr / 1200)) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out tot | Total paid | $ | pmt * yrs * 12 | 2
out int | Interest paid | $ | tot - bal * (1 + fee / 100) | 2