4 modes: single card payoff date, multi-card debt avalanche vs snowball comparison, balance transfer savings, and the shocking true cost of minimum-only payments. 2026 average rates included.
✓Verified: CFPB Credit Card Standards & Federal Reserve G.19 Data — April 2026
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2026 avg: ~21.5% for new accountsEnter your APR.
Must exceed minimum paymentEnter a monthly payment.
Optional — see how extra payments help
Card 1
Card 2
Amount above all minimum payments you can pay extraEnter extra amount.
🔄 Should you do a balance transfer? Enter your current card details and the 0% promotional offer terms to see exactly how much you save.
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Enter current APR.
Typical: 12–21 monthsEnter promo period.
Typical: 3–5%
What you’ll pay each monthEnter monthly payment.
Rate after promo period ends
⚠️ The Minimum Payment Trap: The Credit CARD Act of 2009 requires lenders to print the true cost of minimum payments on every statement — because the numbers are shocking. See how much your balance actually costs when paying only the minimum.
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Most cards: 1–3% with $25 floor
Result
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PAYOFF PROGRESS
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⚠️ Disclaimer: Calculations assume fixed APR, no new purchases, and on-time payments. Actual payoff dates may vary. This is not financial advice. Consult a credit counselor for personalized debt management guidance.
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Sources & Methodology
✅All payoff calculations use standard amortization formula. Avalanche and Snowball simulations verified against Consumer Financial Protection Bureau examples. Average credit card APR data from Federal Reserve G.19 Statistical Release (March 2026). Credit CARD Act minimum payment disclosure requirement from Public Law 111-24.
Consumer Financial Protection Bureau (CFPB) — Credit Card Payoff Guidance
Avalanche and Snowball methodology, credit utilization impact on FICO score, and minimum payment trap disclosure requirements under the Credit CARD Act of 2009 (Pub. L. 111-24).
Federal Reserve G.19 Consumer Credit Statistical Release — March 2026
Average credit card interest rates: 21.47% for accounts assessed interest (all commercial banks), as of Q1 2026. Penalty APR data from CFPB credit card market report.
Single card: monthly interest = balance × (APR/12). Principal paid = payment − interest. Iterate until balance ≤ 0. Multi-card: each month, pay minimums on all cards, then direct extra payment to target card (highest APR for Avalanche, lowest balance for Snowball). Roll freed payment when a card is paid off. Minimum payment simulation: minimum = max(floor × balance, floor_amount), both decreasing as balance falls. Balance transfer: simulate current-card payoff vs. transfer with fee + 0% promo period.
The average American carries $6,500 in credit card debt at an average APR of 21.5%, according to the Federal Reserve. At this rate, paying only the minimum takes over 25 years and costs more than $10,000 in total interest on a $6,500 balance. Understanding your real payoff options — and the true cost of minimum payments — is one of the most financially impactful calculations you can make.
How Credit Card Interest Is Calculated
Credit card interest accrues daily using the Daily Periodic Rate (DPR): APR ÷ 365. At the end of each billing cycle, interest = average daily balance × DPR × days in cycle. Most calculators (including this one) approximate with monthly compounding: monthly interest = balance × (APR ÷ 12), which is accurate to within 0.1% for standard payoff calculations.
Payoff example — $5,000 at 22% APR:
Month 1 interest = $5,000 × (0.22/12) = $91.67
Paying $200/month: principal paid = $200 − $91.67 = $108.33
New balance = $5,000 − $108.33 = $4,891.67
Payoff time formula: n = −ln(1 − r × P/M) / ln(1+r)
Where r = APR/12, P = balance, M = monthly payment
Avalanche vs Snowball — Which Saves More?
Both methods work by concentrating extra payments on one target debt at a time while paying minimums on all others. When the target debt is paid off, its entire payment rolls to the next debt. The difference is which debt gets targeted first.
Avalanche (highest APR first): mathematically optimal. Targets the debt generating the most interest per dollar owed. Saves the most total interest. Best for: disciplined people who can stay motivated even if the first payoff takes a long time. Snowball (smallest balance first): behaviorally optimal for some. Quick wins boost motivation. Best for: anyone who has tried paying down debt before and quit.
Example: $15,000 across 3 cards, $400/mo total budget
Balance Transfer — When Does It Actually Make Sense?
A balance transfer to a 0% promotional card saves substantial interest if you can pay down the balance within the promotional window. The transfer fee (typically 3–5%) is the cost. You need to calculate: interest you would have paid staying on the current card − interest on the new card (usually zero during promo) − transfer fee = net savings.
💡 Balance Transfer Rule of Thumb: Calculate how much you can pay per month. If (monthly payment × promo months) > (balance + transfer fee), you can pay it off completely during the 0% period and save nearly all the interest you would have paid. If not, calculate what the remaining balance will accrue at the post-promo APR (often 25–29%) and factor that in.
The Minimum Payment Trap — Required Reading
The Credit CARD Act of 2009 requires card issuers to print two numbers on every statement: (1) how long it takes to pay off the balance paying only the minimum, and (2) the total amount paid in that scenario. Congress mandated this disclosure precisely because the numbers are shocking to most cardholders.
⚠️ Minimum payment on $5,000 at 22% APR (2% minimum, $25 floor): Payoff time = over 28 years. Total interest paid = over $7,800. You pay back more than 2.5× what you borrowed. Increasing the payment to just $150/month cuts payoff to 44 months and interest to $1,538 — saving $6,262 and 24 years.
It depends on balance, APR, and monthly payment. For $5,000 at 22% APR: $200/month = 31 months ($918 interest). $150/month = 44 months ($1,538 interest). Minimum only = 28+ years ($7,800+ interest). Use Mode 1 above to find your exact payoff date. The rule of thumb: your monthly payment must exceed the monthly interest charge to make any progress. At 22% APR, $5,000 generates $91.67 in interest per month — so $100/month barely makes a dent.
Pay minimums on all debts, then direct all extra money to the highest-APR debt first. Once it’s paid off, roll its payment to the next highest-APR debt. This method minimizes total interest paid and is mathematically optimal. Use Mode 2 above to compare your specific debts under both avalanche and snowball methods with the exact dollar savings for each.
Avalanche saves more money in total interest. Snowball pays off individual debts faster for motivational wins. The right answer depends on you: if you can stay disciplined even when the high-APR card takes a long time to eliminate, avalanche saves the most. If you need the motivation of quick wins to stay on track, snowball’s psychological benefits may lead to better real-world outcomes. This calculator shows the exact dollar difference for your specific debts.
A balance transfer moves your credit card debt to a new card with a 0% APR promotional period (typically 12–21 months). You pay a transfer fee (3–5%), then pay no interest during the promotional window. If you can pay off the balance during the promo period, you save most of what you would have paid in interest. Risk: if you don’t pay it off, the post-promo rate (often 25–29%) applies to any remaining balance. Use Mode 3 above to calculate whether a transfer makes financial sense for your situation.
Because the minimum payment (typically 1–3% of balance) shrinks as your balance shrinks, so you keep paying less and less each month. This means a growing share goes to interest and less to principal. On a $5,000 balance at 22% APR with a 2% minimum: month 1 minimum = $100, of which $91.67 is interest and only $8.33 is principal. By month 20 the balance is still $4,600, the minimum is $92, and $84 of it is still interest. The Credit CARD Act requires issuers to print this on every statement.
The Federal Reserve G.19 release reports the average credit card rate at approximately 21.47% for accounts assessed interest in early 2026. Penalty APRs commonly reach 29.99% after a late payment. Store cards average 26–28%. Cards for excellent credit (750+ score) offer 15–17% APR. The average APR is near a 30-year high due to the Federal Reserve rate environment of 2022–2024, though rates have stabilized as of 2026.
Credit utilization (total balances ÷ total credit limits) is a major FICO factor. Above 30% utilization hurts your score. Above 50% hurts significantly. For example, $4,500 on a $10,000 limit card = 45% utilization. Paying down to $2,500 reduces utilization to 25%, which typically improves your score within 1–2 billing cycles once the new balance is reported. Paying off a card completely and keeping it open (zero balance) is optimal for credit scoring.
Generally no. Closing a paid-off card reduces your total available credit (increasing utilization on other cards) and shortens your average account age, both of which can lower your FICO score. Better: keep the card open with a zero balance or set a small recurring charge (like a streaming subscription) to be paid in full automatically each month. Only close a card if the annual fee exceeds the value of keeping it open.
Credit utilization = (total credit card balances ÷ total credit limits) × 100. FICO weighs this heavily in credit scoring because high utilization signals financial stress. Under 30% is recommended; under 10% is optimal for maximum score benefit. Paying down $3,000 on a card with a $5,000 limit reduces utilization from 60% to 0%, which can improve your FICO score by 40–80 points depending on your overall profile.
When one debt is fully paid off, its entire minimum payment gets redirected to the next target debt. This creates an acceleration effect: your monthly debt payment stays the same but gets concentrated on fewer remaining debts. Example: paying $400/month on 3 cards. After paying off Card C ($60 minimum), now $460 goes to the next card. After paying off Card B ($120 minimum), now $580 goes to the remaining card. Each debt is eliminated faster than the last.