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Loans

Debt Avalanche

Also known as: avalanche method, highest interest first, debt stacking

The debt avalanche is a repayment strategy that targets your highest interest rate first, which always costs the least in total interest.

Under the avalanche method you pay the minimum on every debt and direct all spare money at whichever debt carries the highest annual interest rate, regardless of its size. When that debt clears, its payment rolls onto the next-highest rate, and so on down the list.

This is the mathematically optimal order. Every extra rupee is applied where it stops the most interest from accruing, so no other sequence retires the same debts for less. On Indian credit card rates — commonly 30–42% a year — the saving against a size-first order can run to tens of thousands of rupees.

Its weakness is psychological. If your highest-rate debt is also your largest, the first visible win can be a long way off, and plans that feel like they are going nowhere get abandoned. The avalanche rewards patience that not everyone has in reserve.

One clarification worth making: the debt you are targeting is not always the first one to clear. A small loan can be retired by its own minimum payments long before the dearest debt is cleared. That is expected, and does not mean the strategy is misfiring.

Use it in practice

FAQ

Debt Avalanche — common questions

Because interest accrues fastest on the highest rate. Sending every spare rupee to that debt removes the most expensive balance soonest, so less interest is generated across the whole plan. No other ordering beats it on total cost.
It depends on the spread between your rates and how long the payoff runs. When a 36% credit card sits alongside a 12% car loan, the difference over a two to three year payoff is often tens of thousands of rupees. When all your debts carry similar rates, the saving is negligible.
Compare rates. Clearing a 36% credit card is a guaranteed 36% return, which no equity investment reliably matches. Clear high-interest debt first, keep a small emergency fund so you do not fall back on the card, and invest once only cheap debt like a home loan remains.
Floating-rate home loans to individuals generally cannot carry prepayment penalties, but fixed-rate loans and some personal and vehicle loans can. Check the foreclosure and part-payment terms in your loan agreement before making a large prepayment.

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