Credit Card Personal Loan Calculator: Compare Payments

A credit card personal loan calculator estimates the monthly payment and total interest for a fixed-rate personal loan used to pay off a credit card balance. Enter the amount, annual percentage rate (APR), and term to see an amortized payment estimate; it does not calculate a credit card’s changing minimum payment or establish whether a loan is available to you.

Formula

The calculator treats the personal loan as a fixed-rate loan with equal monthly payments. It first calculates the monthly payment, rounds that payment to the nearest cent, and then multiplies the rounded payment by the number of months to estimate the total paid.

Monthly payment: M = round(P × r ÷ [1 − (1 + r)⁻ⁿ], 2), where r = APR ÷ 1,200 and n = years × 12.

• P is the balance to repay, in dollars.
• APR is the annual percentage rate entered as a percentage, such as 8 for 8% per year.
• r is the monthly interest rate as a decimal.
• n is the number of monthly payments.
• M is the monthly payment, in dollars, rounded to cents.

Total of payments: T = M × n. Total interest: I = T − P. Because the calculator uses the rounded monthly payment for the totals, the last payment on a real loan may differ slightly if the lender adjusts it to bring the balance exactly to zero.

Worked Example

Using the default inputs—$10,000, an 8% APR, and a three-year term—the monthly rate is 0.08 ÷ 12 = 0.0066667, and the term is 3 × 12 = 36 payments.

1. Payment = $10,000 × 0.0066667 ÷ [1 − (1.0066667)⁻³⁶] = approximately $313.36 per month, rounded to cents.
2. Total of payments = $313.36 × 36 = $11,280.96.
3. Total interest = $11,280.96 − $10,000 = $1,280.96.

The result is an estimate under the stated assumptions. A lender’s payment schedule may vary because of its exact calculation conventions, payment dates, fees, or final-payment adjustment.

Assumptions

• The APR stays fixed throughout the loan term.
• There are equal monthly payments, with the first payment one month after borrowing.
• Interest compounds monthly at APR divided by 12.
• The calculation excludes origination charges, other fees, taxes, insurance, PMI, and escrow; it also assumes the full loan amount goes toward the stated balance.

When to Use This Calculator

Use this estimate to understand how a proposed fixed-term personal loan payment relates to its balance, APR, and repayment period. It can also help frame a comparison with a credit card balance, but only when you have reliable figures for both options and account for what each calculation leaves out.

A personal loan generally has a set repayment schedule in this model. A credit card balance is different: its APR may vary, payments can change, and the amount owed can rise with new purchases, fees, or missed payments. A credit card’s minimum payment is determined by its account terms, not by this loan formula. To compare timelines, use the card issuer’s disclosed payment method or a separate credit-card payoff calculation.

Reading the Results and Comparing Costs

The monthly payment is the planned amount for the modeled loan. Total of payments adds those monthly amounts across the term; total interest is the estimated cost of borrowing above the amount repaid. A longer term usually spreads repayment over more months and changes both the monthly payment and total interest. The calculator does not determine which structure fits a person’s circumstances.

For a meaningful comparison, check that the amount borrowed actually covers the credit card balance being considered. Then use the lender’s quoted APR, term, payment, and fee details rather than an assumed rate. If a fee is deducted from loan proceeds, the amount available to pay the card may be less than the loan principal, even though the borrower owes the principal. This calculator does not model that difference.

Also consider the period after a balance transfer or payoff: new card spending can create another balance, and the original card account may remain open. The calculator assumes no new borrowing and no extra payments. It is arithmetic, not an assessment of eligibility, credit consequences, or the suitability of a particular transaction.

Common Calculation Problems and Limits

• Entering 8 instead of 0.08: Enter APR as a percentage, so an 8% rate is entered as 8. The formula converts it to a monthly decimal.
• Confusing a monthly rate with APR: Do not enter a monthly rate in the APR field. The calculator divides the annual percentage by 12.
• Using the wrong balance: A payoff quote or current statement balance can differ from the amount a loan would need to cover. Obtain the actual figures from the relevant providers.
• Ignoring fees or payment timing: These can change the amount received, the repayment schedule, or the total cost. They are not inputs here.
• Assuming a fixed loan equals a card payoff plan: The formula models a fixed-rate installment loan, not a revolving credit card balance or its minimum-payment rules.

Displayed values are rounded, so calculations made from rounded figures may differ by a cent from a lender’s detailed schedule. The estimate also does not account for a changing APR, late or skipped payments, extra payments, or a final installment adjusted by the lender.

Frequently Asked Questions

Can I use this calculator to find my credit card minimum payment?
No. It estimates equal monthly payments on a fixed-rate personal loan. Card minimum-payment calculations depend on the card’s account terms and are not represented here.

Does the calculator include a loan origination fee?
No. Entering the balance alone does not account for a fee or for a fee deducted from loan proceeds. Check the lender’s disclosed amount financed, fees, and payment schedule.

Why is total interest more than the APR suggests?
APR is an annual rate, while the loan accrues interest over successive monthly periods. The total depends on the balance and how long it remains unpaid, as well as the payment schedule.

Does paying off a card with a personal loan erase the debt?
No. It replaces the card balance with a personal-loan obligation if the transaction is completed. This calculator estimates repayment of that loan and does not model subsequent card use.

Why might a lender’s quoted payment differ?
The lender may use different dates, fees, calculation conventions, or a final-payment adjustment. The lender’s disclosure gives the exact figures. This result is an estimate, not financial advice.

Related

• Personal Loan Calculator With Origination Fee: Payment, Cash and APR
• 50/30/20 Budget Calculator
• Debt-to-Income Ratio Calculator (DTI)

in bal | Balance to repay | $ | 10000 | 0.01 | 100000000
in apr | Loan interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 3 | 0.0833 | 50
out pmt | Monthly loan payment | $ | round(bal * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)), 2) | 2
out tot | Total of payments | $ | pmt * yrs * 12 | 2
out int | Total interest paid | $ | tot - bal | 2