Credit Card Calculator

Payoff time · Required payment · Interest · Minimum estimate

Card balance

Balance ?

APR % ?

Monthly payment

Payment each month

Extra each month ?

Assumptions

Start month

📌

Assumes no new purchases and a constant APR. Real issuers often use average daily balance with a daily rate.

💳 Enter balance, APR, and a payment plan to see payoff time and interest.

Time to pay off

—

Total interest

—

Total paid

—

Payoff date

—

PLAN

—

Balance

—

Monthly rate

—

First interest

—

Payment used

—

Months

—

Interest share

—

Your plan

—

36 month payoff payment

—

Fixed payment to clear in 3 years

Calculation used

—

Balance over time

Payment schedule

First 24 months shown

Month	Payment	Interest	Principal	Balance

How Credit Card Payoff Is Calculated

This credit card calculator estimates how long a balance takes to clear and how much interest you pay when you make monthly payments and add no new charges.

Monthly rate

r = APR ÷ 12 ÷ 100 Example: 22% APR → r = 0.22 ÷ 12 = 0.018333… per month

Months with a fixed payment

n = −ln(1 − rB ÷ P) ÷ ln(1 + r) B = balance, P = monthly payment (must be greater than rB) Example: B = 5000, APR = 22%, P = 200 → n ≈ 33.8 → 34 months

Payment for a target payoff

P = rB ÷ [1 − (1 + r)^(−n)] Example: clear $5,000 in 24 months at 22% APR → P ≈ $259.39

What You Get From This Tool

Fixed payment mode: months to pay off, total interest, payoff date, and schedule
Pay off by date: the fixed payment needed for your chosen years and months
Minimum mode: an educational simulation using a percent of balance (with or without interest) and a dollar floor
36 month comparison: the payment that would clear the same balance in three years
Chart and schedule: how balance, interest, and principal change month by month

💡

If your payment is only slightly above monthly interest, payoff stretches out and interest stays high. Raising the fixed amount usually cuts both time and cost.

What Is a Credit Card Calculator?

A credit card calculator is a planning tool for revolving balances. You enter what you owe and the APR, then choose either a monthly payment, a payoff deadline, or a minimum payment style rule. The tool returns payoff time, interest cost, and a month by month path to zero.

It is useful when you want a clear answer to questions such as how long to pay off a credit card, how much to pay each month to finish in two years, or how costly a minimum only plan can become.

Credit card APR and monthly interest

APR is the yearly interest rate stated on the account. For planning, this page converts APR into a monthly rate by dividing by 12. First month interest is about balance times that monthly rate when the balance stays near the starting amount.

Issuers commonly compute finance charges with a daily periodic rate (APR ÷ 365) and an average daily balance over the billing cycle. The Federal Trade Commission and Consumer Financial Protection Bureau explain that methods and fees can differ by card. This calculator’s monthly model is easier to follow and close enough for payoff planning when you freeze new spending.

How to use the calculator

Enter your current balance and purchase APR.
Choose Fixed payment, Pay off by date, or Minimum.
Enter the monthly payment, target years and months, or minimum rule settings.
Read months to payoff, total interest, payoff date, the 36 month comparison payment, and the schedule.

Worked example: fixed $200 payment

Balance $5,000. APR 22%. Monthly rate r = 0.22 ÷ 12 = 0.018333. First interest ≈ 5000 × 0.018333 = $91.67. Payment $200 must exceed that interest or the balance will not fall.

Using the fixed payment formula, n ≈ 33.8 months, so payoff takes 34 months after rounding up for the final partial month in a month by month run. Total interest is the sum of each month’s interest charge. Total paid equals principal plus that interest.

Worked example: pay off in 24 months

Same $5,000 at 22% APR. Set n = 24. Required payment P = rB ÷ [1 − (1+r)^(−24)] ≈ $259.39. Paying that fixed amount each month clears the card in two years if you add no new charges and the APR stays constant.

Minimum payment estimates

Card agreements define the minimum. A pattern used for education is the greater of a floor (often around $25 to $35) and either a percent of the balance or interest plus a percent of the balance. Because the dollar minimum usually falls as the balance falls, payoff can take many years.

United States issuers that disclose estimated repayment periods on statements follow Truth in Lending Act rules, including guidance in CFPB Regulation Z Appendix M1. This page’s minimum mode is not a substitute for your statement disclosure. It shows how a shrinking minimum can extend payoff compared with a fixed payment.

Healthy weight of payment versus interest

Think of monthly interest as the hurdle. Any payment above interest reduces principal. The larger the gap between payment and interest, the faster the balance falls. Extra fixed dollars each month act like a higher P in the formula and cut both time and interest.

Common mistakes

Entering APR as a monthly rate instead of a yearly percent
Using a payment at or below first month interest and expecting a payoff date
Ignoring new purchases, cash advances, or fees that raise the balance
Treating a promotional APR as permanent after the intro period ends
Assuming every issuer uses the same minimum formula

When this calculator is useful

Use it to plan a payoff date, compare a current payment with a larger fixed amount, estimate a 36 month payment, or see why minimum only repayment can cost more. Pair it with a loan or debt payoff plan if you are consolidating several cards.

When results may not match your statement

Daily compounding, average daily balance, grace periods, multiple APR buckets, late fees, and payment allocation rules can change the exact finance charge. Variable APRs can move. Promotional rates expire. Always confirm numbers against your cardholder agreement and monthly statement.

Related calculators

For installment loans with a fixed term, use the Loan Calculator. For car financing, use the Auto Loan Calculator. For tips on receipts, use the Tip Calculator. For tax on purchases, use the Sales Tax Calculator.

Calculation Methodology

DoCalculation uses a monthly amortizing model for a single revolving balance.

Convert APR to monthly rate r = APR ÷ 1200.
Each month, interest = remaining balance × r.
Apply the payment (fixed, target derived, or minimum rule). Principal reduction = payment − interest, capped at the remaining balance.
Repeat until the balance is paid or a safety limit of 600 months is reached.
Total interest is the sum of monthly interest. Total paid is the sum of payments. Payoff date advances one calendar month per payment from the selected start month.

Target mode first solves for the fixed payment with the closed form P = rB ÷ [1 − (1+r)^(−n)], then simulates to confirm the schedule and final payment.

⚠️

Results are educational estimates for personal planning. They are not financial, credit, or legal advice and do not replace your issuer’s disclosures.

Reference: Payoff Scenarios

$5,000 balance at 22% APR, no new charges (monthly model):

Plan	Monthly pay	Approx. months
Fixed $150	$150	~52
Fixed $200	$200	~34
Fixed $300	$300	~20
24 month target	≈ $260	24
36 month target	≈ $191	36

Exact months and interest appear in the live results for your inputs. Market APR levels change over time; published series such as the Federal Reserve G.19 Consumer Credit release report consumer credit measures.

Frequently Asked Questions

How long will it take to pay off my credit card?

Enter balance, APR, and a monthly payment in Fixed payment mode. The calculator returns months to payoff and a payoff date when the payment exceeds monthly interest. If payment is too low, the balance does not clear.

How is credit card interest calculated?

Many issuers use a daily periodic rate of APR ÷ 365 times average daily balance times days in the cycle. This tool applies APR ÷ 12 to the remaining balance each month for a transparent payoff estimate with no new charges.

What is a credit card minimum payment?

It is the smallest amount your issuer requires to keep the account current. Formulas vary. A common educational pattern is a dollar floor or interest plus a percent of the balance. Paying only the declining minimum usually lengthens payoff.

How much should I pay to clear my card in 36 months?

Use Pay off by date with 3 years, or read the 36 month payoff payment in the results. That figure is the fixed monthly amount that clears the entered balance in 36 months under the monthly model.

Does paying more than the minimum save money?

Yes when the extra dollars reduce principal. A higher fixed payment shortens the schedule and lowers total interest because interest is charged on the remaining balance each month.

Should I pay off the highest APR card first?

Paying extra toward the highest APR balance while keeping other cards current often minimizes interest cost. Some people prefer smallest balance first for motivation. This single card calculator helps size payments on one balance at a time.

Sources & References

Consumer Financial Protection Bureau — Regulation Z Appendix M1 (repayment disclosures): consumerfinance.gov/rules-policy/regulations/1026/M1
Federal Reserve — Consumer Credit (G.19) statistical release: federalreserve.gov/releases/g19/current/
Consumer Financial Protection Bureau — Paying credit card interest (Ask CFPB): consumerfinance.gov Ask CFPB

Last reviewed for methodology: 2026. Estimates on this page are for education only and are not financial advice.