Calcs4All

APR 23 · 2026

Debt payoff calculator

Compare avalanche versus snowball payoff timing, interest, and payoff order across multiple debts.

What this calculator covers

Use this debt payoff calculator to route one monthly budget across several debts and compare the payoff horizon under avalanche and snowball strategies.

The result includes a payoff timeline so you can see not just the total months and interest, but also which balance falls first and how the order changes when strategy changes.

This is still a simplified planning model: lender allocation rules, promo expirations, fees, and new borrowing can all change the real-world path.

Frequently asked questions

What is the difference between avalanche and snowball?
Avalanche directs extra budget to the highest-interest balance first, which typically minimizes total interest paid. Snowball targets the smallest balance first, which creates faster account closures and can help maintain motivation, though it often costs more in interest overall.
Does the calculator require me to pay more than the minimum?
No, but the monthly budget must cover all minimum payments combined. Any amount above the minimums becomes extra that the selected strategy allocates to one target balance at a time.
Can I see which debt gets paid off first?
Yes. The result includes a payoff timeline showing the order and month each balance is eliminated under the chosen strategy.
Why might avalanche and snowball finish in the same number of months?
When one debt dominates the portfolio by balance and rate, both strategies may target it first anyway, producing an identical total payoff horizon even though the payoff order within smaller debts differs.

Tool

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RESULT · PAYOFF HORIZON

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Primary result

14 months

Using $850.00 per month across 3 debts, the avalanche strategy (highest APR first) clears the balances in about 14 months with $920.12 in interest.

Starting debt
$10,850.00
Combined minimum payments
$350.00
Extra monthly budget
$500.00
Months to payoff
14 months
Total interest
$920.12
Payoff order
Debt 1 in month 11 → Debt 2 in month 14 → Debt 3 in month 14

Step-by-step solution

  1. 1.Cover the combined minimum payments of $350.00 each month, leaving $500.00 of extra budget to direct strategically.
  2. 2.Add monthly interest to each remaining balance, then route every extra dollar according to the avalanche strategy (highest APR first).
  3. 3.Repeat that payoff cycle until all balances reach zero, which yields about 14 months to payoff and $920.12 of total interest.

Walkthrough

Visual walkthrough

Multi-debt payoff starts with minimum payments, then uses strategy-driven extra cash flow to accelerate one balance at a time.

  1. 01

    Protect the minimums

    Every active debt gets its minimum payment first so the plan stays current on all balances.

    $350.00 total minimums

  2. 02

    Aim the extra budget

    Avalanche sends extra cash to the highest APR balance first to minimize interest.

    $500.00 extra each month

  3. 03

    Read the payoff timeline

    Month-by-month interest accrual and targeted extra payments determine the order and timing of each payoff event.

    14 months total payoff