Debt Snowball Calculator: Compare Snowball vs Avalanche
Plan several balances together instead of estimating them one at a time. Enter up to 40 debts, hold one monthly budget constant, and see exactly how each freed payment rolls into the next target.
Saved plans stay in this browser’s local storage. No account or upload is required.
Debt payoff order
The table follows the selected strategy and shows when each balance reaches zero.
| Payoff order | Debt | Cleared | Elapsed time | Interest | Total paid |
|---|---|---|---|---|---|
| 1 | Auto Loan #1 | Month 14 | 1 year 2 months | $186.45 | $3,386.45 |
| 2 | Card #1 | Month 29 | 2 years 5 months | $1,016.44 | $5,416.44 |
| 3 | Student Loan #1 | Month 43 | 3 years 7 months | $570.81 | $5,470.81 |
| 4 | Auto Loan #2 | Month 56 | 4 years 8 months | $2,417.89 | $7,417.89 |
| 5 | Card #2 | Month 75 | 6 years 3 months | $6,392.36 | $15,392.36 |
Snowball growth chart
As balances disappear, their minimum payments are recycled into the next target. The blue line tracks remaining debt; the orange line tracks the monthly rollover and extra amount.
Snowball vs avalanche comparison
Each row uses the same balances, APRs, minimums and monthly budget. Only the targeting order changes.
| Method | Debt-free time | Total interest | Total paid |
|---|---|---|---|
| Snowball Selected | 6 years 3 months | $10,583.95 | $37,083.95 |
| Avalanche | 5 years 10 months | $8,437.43 | $34,937.43 |
| Order entered | 6 years | $9,055.20 | $35,555.20 |
| Custom · 1 first | 6 years 2 months | $10,035.40 | $36,535.40 |
| Custom · high first | 6 years | $9,452.86 | $35,952.86 |
| Minimum only | 26 years 7 months | $41,400.61 | $67,900.61 |
Month-by-month payment schedule
Interest is charged first, then minimums and the selected rollover payment are applied. Expand the table or export the detailed CSV for per-debt rows.
Show 75-month schedule
| Month | Total payment | Interest | Principal | Rollover / extra | Snowflake | Balance |
|---|---|---|---|---|---|---|
| 1 | $500.00 | $241.41 | $258.59 | $230.00 | $0.00 | $26,241.41 |
| 2 | $500.00 | $239.29 | $260.71 | $230.00 | $0.00 | $25,980.70 |
| 3 | $500.00 | $237.17 | $262.83 | $230.00 | $0.00 | $25,717.87 |
| 4 | $500.00 | $235.02 | $264.98 | $230.00 | $0.00 | $25,452.89 |
| 5 | $500.00 | $232.85 | $267.15 | $230.00 | $0.00 | $25,185.74 |
| 6 | $500.00 | $230.67 | $269.33 | $230.00 | $0.00 | $24,916.41 |
| 7 | $500.00 | $228.45 | $271.55 | $230.00 | $0.00 | $24,644.86 |
| 8 | $500.00 | $226.24 | $273.76 | $230.00 | $0.00 | $24,371.10 |
| 9 | $500.00 | $224.00 | $276.00 | $230.00 | $0.00 | $24,095.10 |
| 10 | $500.00 | $221.73 | $278.27 | $230.00 | $0.00 | $23,816.83 |
| 11 | $500.00 | $219.45 | $280.55 | $230.00 | $0.00 | $23,536.28 |
| 12 | $500.00 | $217.15 | $282.85 | $230.00 | $0.00 | $23,253.43 |
| 13 | $500.00 | $214.84 | $285.16 | $230.00 | $0.00 | $22,968.27 |
| 14 | $500.00 | $212.51 | $287.49 | $253.55 | $0.00 | $22,680.78 |
| 15 | $500.00 | $209.48 | $290.52 | $260.00 | $0.00 | $22,390.26 |
| 16 | $500.00 | $206.40 | $293.60 | $260.00 | $0.00 | $22,096.66 |
| 17 | $500.00 | $203.29 | $296.71 | $260.00 | $0.00 | $21,799.95 |
| 18 | $500.00 | $200.15 | $299.85 | $260.00 | $0.00 | $21,500.10 |
| 19 | $500.00 | $196.97 | $303.03 | $260.00 | $0.00 | $21,197.07 |
| 20 | $500.00 | $193.76 | $306.24 | $260.00 | $0.00 | $20,890.83 |
| 21 | $500.00 | $190.51 | $309.49 | $260.00 | $0.00 | $20,581.34 |
| 22 | $500.00 | $187.22 | $312.78 | $260.00 | $0.00 | $20,268.56 |
| 23 | $500.00 | $183.91 | $316.09 | $260.00 | $0.00 | $19,952.47 |
| 24 | $500.00 | $180.54 | $319.46 | $260.00 | $0.00 | $19,633.01 |
| 25 | $500.00 | $177.15 | $322.85 | $260.00 | $0.00 | $19,310.16 |
| 26 | $500.00 | $173.74 | $326.26 | $260.00 | $0.00 | $18,983.90 |
| 27 | $500.00 | $170.27 | $329.73 | $260.00 | $0.00 | $18,654.17 |
| 28 | $500.00 | $166.77 | $333.23 | $260.00 | $0.00 | $18,320.94 |
| 29 | $500.00 | $163.23 | $336.77 | $260.00 | $0.00 | $17,984.17 |
| 30 | $500.00 | $161.06 | $338.94 | $310.00 | $0.00 | $17,645.23 |
| 31 | $500.00 | $159.78 | $340.22 | $310.00 | $0.00 | $17,305.01 |
| 32 | $500.00 | $158.50 | $341.50 | $310.00 | $0.00 | $16,963.51 |
| 33 | $500.00 | $157.23 | $342.77 | $310.00 | $0.00 | $16,620.74 |
| 34 | $500.00 | $155.94 | $344.06 | $310.00 | $0.00 | $16,276.68 |
| 35 | $500.00 | $154.65 | $345.35 | $310.00 | $0.00 | $15,931.33 |
| 36 | $500.00 | $153.35 | $346.65 | $310.00 | $0.00 | $15,584.68 |
| 37 | $500.00 | $152.05 | $347.95 | $310.00 | $0.00 | $15,236.73 |
| 38 | $500.00 | $150.73 | $349.27 | $310.00 | $0.00 | $14,887.46 |
| 39 | $500.00 | $149.41 | $350.59 | $310.00 | $0.00 | $14,536.87 |
| 40 | $500.00 | $148.09 | $351.91 | $310.00 | $0.00 | $14,184.96 |
| 41 | $500.00 | $146.76 | $353.24 | $310.00 | $0.00 | $13,831.72 |
| 42 | $500.00 | $145.43 | $354.57 | $310.00 | $0.00 | $13,477.15 |
| 43 | $500.00 | $144.09 | $355.91 | $310.00 | $0.00 | $13,121.24 |
| 44 | $500.00 | $141.86 | $358.14 | $335.00 | $0.00 | $12,763.10 |
| 45 | $500.00 | $138.26 | $361.74 | $335.00 | $0.00 | $12,401.36 |
| 46 | $500.00 | $134.62 | $365.38 | $335.00 | $0.00 | $12,035.98 |
| 47 | $500.00 | $130.95 | $369.05 | $335.00 | $0.00 | $11,666.93 |
| 48 | $500.00 | $127.25 | $372.75 | $335.00 | $0.00 | $11,294.18 |
| 49 | $500.00 | $123.50 | $376.50 | $335.00 | $0.00 | $10,917.68 |
| 50 | $500.00 | $119.72 | $380.28 | $335.00 | $0.00 | $10,537.40 |
| 51 | $500.00 | $115.89 | $384.11 | $335.00 | $0.00 | $10,153.29 |
| 52 | $500.00 | $112.04 | $387.96 | $335.00 | $0.00 | $9,765.33 |
| 53 | $500.00 | $108.13 | $391.87 | $335.00 | $0.00 | $9,373.46 |
| 54 | $500.00 | $104.20 | $395.80 | $335.00 | $0.00 | $8,977.66 |
| 55 | $500.00 | $100.22 | $399.78 | $335.00 | $0.00 | $8,577.88 |
| 56 | $500.00 | $96.20 | $403.80 | $335.00 | $0.00 | $8,174.08 |
| 57 | $500.00 | $91.96 | $408.04 | $390.00 | $0.00 | $7,766.04 |
| 58 | $500.00 | $87.37 | $412.63 | $390.00 | $0.00 | $7,353.41 |
| 59 | $500.00 | $82.73 | $417.27 | $390.00 | $0.00 | $6,936.14 |
| 60 | $500.00 | $78.03 | $421.97 | $390.00 | $0.00 | $6,514.17 |
| 61 | $500.00 | $73.28 | $426.72 | $390.00 | $0.00 | $6,087.45 |
| 62 | $500.00 | $68.48 | $431.52 | $390.00 | $0.00 | $5,655.93 |
| 63 | $500.00 | $63.63 | $436.37 | $390.00 | $0.00 | $5,219.56 |
| 64 | $500.00 | $58.72 | $441.28 | $390.00 | $0.00 | $4,778.28 |
| 65 | $500.00 | $53.76 | $446.24 | $390.00 | $0.00 | $4,332.04 |
| 66 | $500.00 | $48.74 | $451.26 | $390.00 | $0.00 | $3,880.78 |
| 67 | $500.00 | $43.66 | $456.34 | $390.00 | $0.00 | $3,424.44 |
| 68 | $500.00 | $38.52 | $461.48 | $390.00 | $0.00 | $2,962.96 |
| 69 | $500.00 | $33.33 | $466.67 | $390.00 | $0.00 | $2,496.29 |
| 70 | $500.00 | $28.08 | $471.92 | $390.00 | $0.00 | $2,024.37 |
| 71 | $500.00 | $22.77 | $477.23 | $390.00 | $0.00 | $1,547.14 |
| 72 | $500.00 | $17.41 | $482.59 | $390.00 | $0.00 | $1,064.55 |
| 73 | $500.00 | $11.98 | $488.02 | $390.00 | $0.00 | $576.53 |
| 74 | $500.00 | $6.49 | $493.51 | $390.00 | $0.00 | $83.02 |
| 75 | $83.95 | $0.93 | $83.02 | $0.00 | $0.00 | $0.00 |
How this debt snowball calculator works
The planner begins each month by adding one-twelfth of the annual rate to every active balance and rounding that charge to cents. It then pays each fixed minimum. The part of your monthly debt budget that remains is sent to the target selected by the snowball, avalanche, entered, or custom order. When that target is cleared, unused money continues to the next debt during the same month. Optional snowflake payments are added only in the month you specify.
The engine rounds each monthly interest charge and payment to cents. It pays every active minimum first, then sends the remaining budget to one debt at a time according to the selected order. If the target is cleared mid-month, unused money spills to the next debt in that same month.
Assumptions and limits
- Each APR stays constant for the full plan.
- Minimum payments are fixed dollar amounts rather than percentages that decline with the balance.
- No new purchases, late fees, annual fees, promotional-rate changes or balance-transfer fees are added.
- Interest is modeled monthly as APR ÷ 12, not from an issuer’s average daily balance.
- Payments occur after the month’s interest charge. Real statement timing can shift results by a small amount.
- One-off snowflakes are applied in the specified payoff month and are not repeated.
Use statement balances, APRs and required minimums, then revisit the plan when any of them changes.
Why the snowball amount grows without raising the budget
Your monthly debt budget remains fixed, but required base payments shrink whenever an account is cleared. The difference is not released for spending: it becomes additional principal for the next target. This recycling of old minimums is the mechanical “snowball.”
The planner recalculates the available rollover every month. If a target needs less than the available amount, the surplus immediately spills to the next debt rather than waiting for a new month.
Fixed minimums versus real credit-card minimum formulas
This model treats each minimum as a fixed dollar commitment until the balance is gone. That is appropriate when you intend to keep paying at least today’s minimum even if the issuer later lowers the required amount.
Some issuers calculate minimums as a percentage of balance plus interest, subject to a floor. A declining minimum can extend payoff dramatically. Entering a fixed amount avoids that trap but means the schedule is a plan, not a prediction of future statement minimums.
How to use custom priority without losing the rollover effect
Assign each debt a number, then choose whether 1 or the highest number is targeted first. The calculator still pays every minimum and still rolls freed payments forward; only the order of the focused payment changes.
Custom order is useful for promotional rates, legal obligations, secured debts, or a small balance you need removed before a refinancing application. The comparison table keeps snowball and avalanche visible as benchmarks.
Frequently asked questions
What is the debt snowball method?
It pays the minimum on every debt and directs all remaining money to the smallest current balance. After that balance reaches zero, its former payment joins the amount aimed at the next-smallest balance.
How is the debt avalanche different?
The avalanche targets the highest APR first instead of the smallest balance. With the same payment budget it generally minimizes interest, although the first visible payoff may take longer.
Can I enter more than ten debts?
Yes. The web planner accepts up to 40 active debts at no charge, including a name, balance, APR, fixed minimum payment, and optional custom priority for each row.
What are snowflake payments?
A snowflake is a one-time extra payment in a chosen payoff month, such as a refund or bonus. It is added above the regular monthly budget and sent through the selected payoff order.
Why does my statement differ from the schedule?
Card issuers often calculate interest from average daily balances and statement-cycle dates. This planner uses a transparent monthly APR divided by 12 model, so small differences are expected.
Should I choose snowball or avalanche?
Choose avalanche when minimizing interest is the primary objective. Choose snowball when earlier account closures help you maintain the plan. The comparison table quantifies both outcomes using your own debts.
Does the calculator store my debts online?
No. The calculator runs in your browser. The optional save button uses local browser storage on the current device, and the CSV export is generated locally.
References & authoritative sources
- Consumer Financial Protection Bureau — Ways to pay down credit card debt · consulted July 10, 2026 · Federal consumer guidance on prioritizing debt payments and avoiding additional borrowing.
- Federal Reserve Board — Consumer Credit — G.19 · consulted July 8, 2026 · Official U.S. consumer-credit rate and volume benchmarks; rates entered in the calculator should come from the user’s statements.
- Kellogg School of Management, Northwestern University — Why paying off the smallest debt first can improve progress · consulted July 10, 2026 · Behavioral research context for balance-focused repayment progress; not a claim that snowball minimizes interest.
Related calculators
Data sources & benchmarks
Rates in the planner are entered by you. The Federal Reserve benchmark below is context for consumer-credit rates, not a substitute for the APR on each statement.
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Methodology & review
The calculator independently simulates every debt month by month. It rounds interest to cents, pays each fixed minimum, and directs the remaining monthly budget to the selected target. Any unused target payment spills to the next debt in the same month. Golden fixtures reproduce the attached five-debt spreadsheet schedule exactly.
Reviewed according to the CalcDomain Editorial Policy & Calculator Methodology. We document formulas, edge cases, sources, update dates, and correction paths for calculator pages.
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