Paying only the minimum on credit card debt is one of the most expensive decisions most people never consciously make. Here's the math — and what even a small extra payment changes.
| Balance / APR | Min Only | Extra Payment | You Save |
|---|---|---|---|
$5,000 @ 20% | 20+ yrs $7,200 interest | $200/mo → 2 yrs 10 mo $1,660 interest | $5,540 |
$10,000 @ 22% | 30+ yrs $19,400 interest | $400/mo → 3 yrs 2 mo $4,700 interest | $14,700 |
$20,000 @ 21% | 30+ yrs $37,500 interest | $700/mo → 4 yrs 1 mo $14,200 interest | $23,300 |
A $10,000 credit card balance at 22% APR has a minimum payment of about $200/month. That feels manageable. What most people don't realize: in month 1, about $183 of that payment goes to interest. Only $17 reduces your principal. You're making a $200 payment to reduce your debt by $17.
As you slowly pay down the balance, the minimum payment also decreases — keeping you in debt even longer. This is by design. The minimum payment treadmill is engineered by card issuers to maximize their lifetime revenue from you.
Credit card interest compounds daily. At 22% APR, your daily rate is roughly 0.060%. On a $10,000 balance, that's $6 per day. Every day you don't reduce that principal, you owe another $6. That $6 also compounds — interest on interest.
This is the same compounding that makes your investments grow. But on debt, it's working for the bank, not you. The goal is to turn that compounding against the debt by reducing principal aggressively.
Every extra dollar you pay above the minimum has three effects:
This is why the savings grow non-linearly. An extra $100/month doesn't save $100 × 12 months × years = linear math. It saves $100 plus the compounding interest on every future month it helps reduce — often 3–5× the nominal payment amount.
Most people can find $100–300/month without a significant lifestyle change:
Even $50/month extra makes a dramatic difference over years. Use the calculator below to see your exact numbers.
Strategy
Strategy comparison
| ❄ Snowball | 📉 Avalanche | |
|---|---|---|
| Payoff date | May 2030 | May 2030 |
| Total interest | $3,979 | $3,979 |
| Months to payoff | 47 | 47 |
| You save | $0 | — |
Balance over time
Payment schedule
| Month | Debt | Payment | Principal | Interest | Remaining |
|---|---|---|---|---|---|
| Mo 1 | Chase Visa | $335 | $232 | $103 | $5,168 |
| Car Loan | $185 | $138 | $47 | $8,062 | |
| Student Loan | $130 | $75 | $55 | $11,925 | |
| Mo 2 | Chase Visa | $335 | $236 | $99 | $4,932 |
| Car Loan | $185 | $139 | $46 | $7,924 | |
| Student Loan | $130 | $75 | $55 | $11,850 | |
| Mo 3 | Chase Visa | $335 | $241 | $94 | $4,692 |
| Car Loan | $185 | $139 | $46 | $7,784 | |
| Student Loan | $130 | $76 | $54 | $11,774 | |
| Mo 4 | Chase Visa | $335 | $245 | $90 | $4,447 |
| Car Loan | $185 | $140 | $45 | $7,644 | |
| Student Loan | $130 | $76 | $54 | $11,698 | |
| Mo 5 | Chase Visa | $335 | $250 | $85 | $4,197 |
| Car Loan | $185 | $141 | $44 | $7,503 | |
| Student Loan | $130 | $76 | $54 | $11,622 | |
| Mo 6 | Chase Visa | $335 | $255 | $80 | $3,942 |
| Car Loan | $185 | $142 | $43 | $7,361 | |
| Student Loan | $130 | $77 | $53 | $11,545 | |
| Mo 7 | Chase Visa | $335 | $259 | $76 | $3,683 |
| Car Loan | $185 | $143 | $42 | $7,218 | |
| Student Loan | $130 | $77 | $53 | $11,468 | |
| Mo 8 | Chase Visa | $335 | $264 | $71 | $3,419 |
| Car Loan | $185 | $143 | $42 | $7,075 | |
| Student Loan | $130 | $77 | $53 | $11,390 | |
| Mo 9 | Chase Visa | $335 | $270 | $65 | $3,149 |
| Car Loan | $185 | $144 | $41 | $6,930 | |
| Student Loan | $130 | $78 | $52 | $11,312 | |
| Mo 10 | Chase Visa | $335 | $275 | $60 | $2,874 |
| Car Loan | $185 | $145 | $40 | $6,785 | |
| Student Loan | $130 | $78 | $52 | $11,234 | |
| Mo 11 | Chase Visa | $335 | $280 | $55 | $2,594 |
| Car Loan | $185 | $146 | $39 | $6,639 | |
| Student Loan | $130 | $79 | $51 | $11,156 | |
| Mo 12 | Chase Visa | $335 | $285 | $50 | $2,309 |
| Car Loan | $185 | $147 | $38 | $6,492 | |
| Student Loan | $130 | $79 | $51 | $11,077 |
Best balance transfer cards to pay off faster
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