Personal Loan Credit Card Payoff Calculator

This calculator estimates the fixed monthly payment and total interest on a personal loan used to pay off a credit-card balance. Enter the loan amount, APR, and term to see the payment and interest under a level-payment schedule; compare the estimate with the card’s remaining cost and any loan fees before acting.

Formula

The calculator treats the personal loan as a fixed-rate loan with equal monthly payments. It calculates the monthly payment using the standard amortization formula, then subtracts the amount borrowed from the total of those rounded payments to estimate interest.

Payment: M = P × r ÷ [1 − (1 + r)⁻ⁿ], where r = APR ÷ 1,200 and n = years × 12. The payment is rounded to the nearest cent. Total interest: I = M × n − P.

• P is the personal-loan principal, in dollars.
• APR is the annual percentage rate entered as a percentage, such as 8 for 8%.
• r is the monthly rate as a decimal.
• n is the number of monthly payments.
• M is the estimated monthly payment, in dollars.
• I is estimated total interest, in dollars.

Use a loan amount that reflects the debt you would actually consolidate. If a lender adds an origination fee to the amount borrowed, or deducts it from the proceeds, the fee can affect both the amount financed and how much money is available to pay the card. This calculator has no fee input, so account for those figures separately.

Worked Example

With the default inputs—$20,000, an 8% APR, and a five-year term—the calculator uses 60 monthly payments. The monthly rate is 8 ÷ 1,200 = 0.0066667.

1. Payment = 20,000 × 0.0066667 ÷ [1 − (1 + 0.0066667)⁻⁶⁰].
2. The unrounded payment is about $405.53, so the displayed monthly payment is $405.53.
3. Total of displayed payments = $405.53 × 60 = $24,331.80.
4. Estimated total interest = $24,331.80 − $20,000 = $4,331.80.

Assumptions

• The APR stays fixed for the full term.
• Payments are equal, made monthly, and treated as occurring at the end of each monthly period.
• Interest compounds monthly at APR divided by 12.
• The calculation excludes origination and other fees, taxes, insurance, late charges, and card charges made after payoff. It does not model credit-card interest during a transition or any promotional terms.

How Personal Loan Payoff Works

In a debt-consolidation arrangement, a borrower uses the proceeds of a personal loan to pay down or pay off one or more credit-card balances. The card debt is replaced by a loan with its own balance, APR, payment schedule, and term. A fixed installment payment can make the payoff date more defined than making changing payments on a revolving card, but that does not by itself establish that the total cost will be lower.

For a fair comparison, gather each card’s current balance, APR, minimum payment, and any fees or promotional expiration dates. Then request the personal loan’s actual APR, amount financed, term, monthly payment, and fee details from the lender. Compare total dollars paid over the same period, not just the new payment. A longer term can lower the required monthly payment while increasing the number of months interest accrues.

For example, a $20,000 loan at 8% for five years produces the estimate above. A shorter term at the same APR would generally have a higher monthly payment and fewer payment periods; a longer term would generally have a lower payment and more periods. The calculator’s outputs describe only the loan side of the comparison. They do not estimate what the card would cost because card APRs, payments, new purchases, and payment allocation can vary.

How to Compare the Loan With Card Debt

• Check the amount that reaches the cards. If fees are deducted from proceeds, borrowing $20,000 may not deliver $20,000 for payoff. Include any amount needed to cover the shortfall in your comparison.
• Compare total cost and timing. A smaller monthly payment is not necessarily a smaller total repayment. Include all scheduled payments and known fees over the complete term.
• Confirm the payoff amount. Card balances can change with interest, pending transactions, and payment timing. Obtain a current payoff figure and confirm that the payment was credited.
• Consider what happens to the cards afterward. Paying a balance does not close an account or prevent new purchases. If new charges accumulate while the personal loan is being repaid, total debt can rise.
• Use actual terms, not an advertised estimate. Enter the APR and term offered for the specific application. Approval and final terms depend on the lender’s assessment; this calculator does not predict either.

One common misconception is that consolidating card balances automatically saves money or improves a credit score. The arithmetic alone cannot establish either outcome. Costs depend on the full loan terms and card behavior, while credit reporting and scoring involve information outside this model. Treat the calculator as a way to understand payment math, not a forecast of a credit outcome.

Costs, Limitations, and Common Problems

The output is an estimate based on a constant rate and regular monthly payments. Actual payment schedules may use specific dates, daily interest calculations, rounding conventions, or a final payment that differs slightly. The calculator rounds the monthly payment to cents and multiplies that rounded amount by the number of months; a lender’s statement may show a small difference because of its schedule or rounding.

The result also assumes the entire principal is used as the loan amount. It does not compare the loan with the card’s minimum-payment path, which can change as the balance falls, nor does it account for additional card spending. A missed or late payment, a variable rate, a changed term, or fees can also make real costs different from the displayed estimate.

For a useful comparison, write down the lender’s complete written terms and the card payoff figures, then compare total outlay and payment dates. If the loan proceeds are sent directly to creditors, check which accounts and amounts are covered. If funds are sent to you, confirm when card payments must be made to avoid a gap in which interest or fees continue to accrue.

Alternatives to a Personal Loan

A personal loan is one possible way to address card balances, but it is not the only route. Alternatives can include paying cards down under their existing terms, directing extra payments to a selected balance, or asking a qualified nonprofit credit counselor about general budgeting or debt-management options. Each approach has different costs and conditions; check applicable terms directly with the relevant provider. This calculator does not model those alternatives or determine which fits a person’s circumstances.

Frequently Asked Questions

Can I use a personal loan to pay off a credit card?
Some personal loans permit proceeds to be used for debt consolidation, while terms and payment methods differ by lender. Check the loan agreement and confirm how funds will reach the card issuer.

Will a personal loan lower my credit-card interest?
Not necessarily. Compare the actual loan APR and fees with the card’s costs over the same payoff period. The calculator estimates loan interest only and does not calculate card interest.

Does paying off a credit card with a loan erase the debt?
No. It replaces the card balance with a personal-loan balance if the payoff is complete. The loan still has to be repaid, and new card purchases can create additional debt.

Does the calculator include loan fees?
No. It models principal, APR, and term only. Add fees to your separate comparison and check whether they are paid upfront, deducted from proceeds, or included in the amount financed.

Why is the monthly payment different from a lender’s quote?
The quote may include fees, a different financed amount, a different APR or term, or payment-date and rounding details not represented here. Use the lender’s disclosure for the actual scheduled figures.

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

Related

• Loan Payoff Quote Calculator and Explanation
• Loan Payoff Graph: See Your Balance Over Time
• Loan Payoff Letter: What It Shows and How to Get One

in p | Loan amount | $ | 20000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2