Skip to main content

Credit Card Payoff Calculator

Finance & Investment

Payoff time, total interest and minimum-payment trap

Quick Answer

Credit Card Payoff Calculator: Payoff time, total interest and minimum-payment trap. Months to pay off n = −ln(1 − B×r÷P) ÷ ln(1+r), requires P > B×r.

Credit card APR is usually 15–24% (China installments ≈ 13–17% real APR). Paying only the minimum can take 10+ years.
Time to pay off24 months≈ 2.0 years
Total paid35,934.34CNY
Total Interest5,934.34CNY
Interest costs 19.8% of the balance.
Minimum-payment trap: 10% minimum on this balance = 3,000 in month 1, of which 450 is pure interest — only 2,550 reduces debt.

Calculation steps

  1. 1Monthly rate i = 18% ÷ 12 = 1.5000%
  2. 2Months n = −ln(1 − B×i ÷ P) ÷ ln(1 + i) = 24.0 → 24 months
  3. 3Total = payment × n = 35,934.34; interest = 5,934.34

Common borrowing costs (real APR)

ProductReal APR
Mortgage (commercial)3.3%–3.9%
Consumer loan (bank)3.5%–8%
Credit card installment13%–17%
Credit card revolving (daily 0.05%)18.25%
Online microloan18%–24%
Strategy: pay off the highest-APR debt first (avalanche). If your APR exceeds ~15%, consolidating into a lower-rate bank consumer loan usually saves more than any budgeting trick. Revolving interest accrues daily and compounds monthly — every extra payment immediately cuts future interest.

Was this tool helpful?

How to Use

  1. Enter amounts and terms: fill principal, rate and period in the Credit Card Payoff Calculator (defaults work for a quick try).
  2. Instant results: key figures and cost breakdown update live as you type.
  3. Compare scenarios: tweak any parameter to compare costs and returns across plans.
  4. Copy key numbers: one-click copy for records or sharing with your advisor.

Key Points

  • Credit Card Payoff Calculator is a free online finance tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Payoff time, total interest and minimum-payment trap.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Credit card amortization

Months to pay off n = −ln(1 − B×r÷P) ÷ ln(1+r), requires P > B×r
Total interest = n×P − B (B balance, P payment, r monthly rate)
Minimum-payment trap: ¥10,000 at 18% APR takes 9+ years

FAQ

How do I use the Credit Card Payoff Calculator?
Open the page and fill in the input fields — results update automatically. Payoff time, total interest and minimum-payment trap.
Are the results accurate?
Yes. Standard financial formulas and published rate data are used. For official figures, consult your financial institution.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Can I use the results for financial decisions?
Results are for reference. Consult a licensed financial advisor before major decisions.
Does it work on mobile?
Yes. Fully responsive on phones, tablets and desktops.

Related Tools

Related Guides

Source & Updates

Based on published rate tables and standard financial formulas. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Credit Card Payoff Calculator[EB/OL]. https://www.yijiansuan.com/en/c/finance/credit-card-payoff

Results provided by this tool are for reference only and do not constitute professional advice.