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Debt Payoff Calculator

Compare avalanche and snowball debt repayment schedules, with fixed minimum payments and extra cash rolled into remaining balances.

Currency: USD

Enter all amounts in USD. Changing currency keeps numbers unchanged; no exchange rate is applied.

Your inputs

One debt per line. Payments and interest are monthly; no new purchases.

Calculations run in your browser. No account needed.

EXAMPLE RESULTCalculated locally
Debt-free after
30 months
Total interest
$2,836.56
Monthly debt budget
$600.00
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My workspace

Calculate with your inputs to save a result or compare scenarios.

Debt balance over time

USD
Remaining balance
03.6K7.3K10.9K14.6K11530
Month 30
Remaining balance$0.00

Detailed breakdown

All 30 rows

The complete calculation, row by row. Amounts in USD.

Swipe or scroll horizontally for more columns.
Detailed breakdown · All 30 rows
MonthPayments (USD)Interest (USD)Remaining balance (USD)
1600.00191.6714,591.67
2600.00185.4314,177.10
3600.00179.0913,756.19
4600.00172.6513,328.84
5600.00166.1012,894.95
6600.00159.4512,454.40
7600.00152.6912,007.08
8600.00145.8111,552.90
9600.00138.8311,091.72
10600.00131.7310,623.45
11600.00124.5110,147.96
12600.00117.179,665.13
13600.00109.719,174.84
14600.00102.138,676.97
15600.0094.438,171.40
16600.0086.607,658.00
17600.0078.647,136.64
18600.0071.376,608.00
19600.0066.086,074.08
20600.0060.745,534.82
21600.0055.354,990.17
22600.0049.904,440.07
23600.0044.403,884.47
24600.0038.843,323.32
25600.0033.232,756.55
26600.0027.572,184.12
27600.0021.841,605.96
28600.0016.061,022.02
29600.0010.22432.24
30436.564.320.00

How it works

A useful distinction

Compare the first win with final payoff

Snowball may clear the first account earlier while avalanche finishes the entire portfolio sooner under the same fixed budget. Compare both the first debt-free account and total interest; these measure different benefits.

Comparing payoff priorities with the same budget

Keep the total payment budget constant when comparing debt-payoff strategies. Otherwise, a faster result may come from paying more rather than changing which debt receives extra money first. Check how minimum payments, rollover amounts, and dated extras are entered. The schedule assumes the modeled debts and rates, so new borrowing or a rate change requires an updated scenario.

Multiple debt payoff: formula and assumptions

Pay minimums, allocate extra cash to the priority debt, and roll freed payments into the remaining debts.

Interest is applied monthly at APR/12 and minimum payments remain fixed until payoff. The engine limits schedules to 100 years.

Payment budgets, rollover & dated extras: formula and assumptions

Ending debt = opening debt + monthly interest − minimums − allocated extra payments.

All minimums are paid first. Extra payments then follow your selected priority. Annual and dated extras apply once and do not increase future monthly budgets.

Worked example

Reference example currency: USD. These fixed examples do not change with your calculator preferences.

Using the Multiple debt payoff example:

Inputs
Debts: balance, APR %, minimum monthly payment
5000, 22, 150 10000, 12, 250
Extra monthly debt budget ($)
200
Repayment strategy
Highest rate first
Method

Pay minimums, allocate extra cash to the priority debt, and roll freed payments into the remaining debts.

Result

Example result

Debt-free after: 30 months

Total interest: $2,836.56

Monthly debt budget: $600.00

These are illustrative inputs. Change the values to explore a different scenario.

Formula references

References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.

Common questions

How do avalanche and snowball ordering differ?

Avalanche prioritizes higher interest rates; snowball prioritizes smaller balances. Both pay entered minimums before allocating extra cash.

What happens after one debt is paid off?

Its freed payment is redirected to remaining debts. The model assumes no new borrowing and fixed minimum-payment amounts until payoff.

Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.