Home›Finance›Debt Payoff Calculator
Snowball vs Avalanche

Debt Payoff Calculator — Snowball vs Avalanche Simulator

Add every debt you're carrying, set an extra monthly payment, and this tool runs a real month-by-month simulation of both the Snowball and Avalanche strategies — showing your exact debt-free date, total interest, and how much each method saves you.

💳 Your Debts

Debt NameBalance (₹)Rate (% p.a.)Min Payment (₹)
How it works: Every debt's minimum is paid first each month. Your extra payment goes entirely to one priority debt — highest interest rate for Avalanche, smallest balance for Snowball. When a debt is paid off, its minimum joins the extra pool for the next one.

📊 Comparison Result

Enter your debts and click Compare
⚠️

Disclaimer: This calculator is for educational and planning purposes only and does not constitute financial advice. It assumes fixed interest rates and consistent payments with no new borrowing. Real loan terms, fees, and rate changes can affect actual outcomes. Consult a licensed financial advisor for personal debt management decisions.

Snowball vs Avalanche — What's the Actual Difference?

Debt Avalanche directs every extra rupee toward whichever debt has the highest interest rate, regardless of its balance. This is the mathematically optimal strategy — it minimizes the total interest you pay across all your debts, every time.

Debt Snowball directs every extra rupee toward whichever debt has the smallest balance, regardless of its rate. It usually costs a bit more in total interest, but clears individual debts faster, which many people find easier to stick with.

Neither is "wrong" — Avalanche wins on pure math, Snowball often wins on follow-through. This calculator runs both as a real simulation on your actual numbers so you can see exactly what the trade-off costs you in rupees and months, not just in theory.

How the Simulation Actually Works

  1. Each month, interest accrues on every debt's current balance at its own rate.
  2. Every debt's minimum payment is made first.
  3. Your specified extra payment is applied in full to the single highest-priority debt (by rate for Avalanche, by balance for Snowball).
  4. Once a debt reaches zero, its minimum payment amount is added to the extra pool from the next month onward — this is what makes both methods accelerate over time.
  5. The simulation repeats month by month until every debt reaches zero, tracking total interest paid and the exact payoff month for each debt.

Worked Example

Three debts: a ₹50,000 credit card at 36% (min ₹2,000), a ₹2,00,000 personal loan at 14% (min ₹4,500), and a ₹8,00,000 car loan at 9% (min ₹12,000) — with ₹5,000/month extra.

MethodPriority OrderDebt-Free InTotal Interest
AvalancheCredit Card (36%) → Personal Loan (14%) → Car Loan (9%)~5.9 yearsLower
SnowballCredit Card (₹50K) → Personal Loan (₹2L) → Car Loan (₹8L)~5.9–6.1 yearsSlightly higher

In this example both methods start with the same debt (smallest balance and highest rate happen to match), so the gap is small. The bigger your rate differences, the more Avalanche pulls ahead — enter your real numbers above to see your actual gap.

Frequently Asked Questions

Snowball pays off the smallest balance first regardless of interest rate, building momentum through quick wins. Avalanche pays off the highest interest rate first, which mathematically minimizes total interest paid. Avalanche saves more money; Snowball often keeps people motivated longer.
Avalanche almost always saves equal or more total interest than Snowball, because it always directs extra payments toward the debt costing you the most. The gap is larger when your debts have very different interest rates, and smaller when rates are similar.
Every debt's minimum payment is paid first. Any extra amount you specify is applied entirely to your single highest-priority debt each month. Once a debt is fully paid off, its former minimum payment amount is added to the extra pool for the next debt, accelerating payoff.
If your total minimum payments are too low relative to your interest rates and balances, your debt can grow instead of shrinking. This calculator flags that situation instead of showing a misleading payoff date.
This is a real month-by-month amortization simulation across all debts you enter, not a rough estimate. It accrues interest monthly, applies minimum payments, then routes any extra amount by priority order, exactly as the two strategies work in practice.