Debt Snowball vs Avalanche Calculator
The debt snowball versus avalanche question comes down to one trade-off: the snowball clears your smallest balance first for motivation, while the avalanche targets your highest interest rate first to save the most money. Both use the same monthly budget, only in a different order. Enter your debts below and see, on your own numbers, exactly how many months and how much interest each method costs, in rupees or dollars.
Whatever you can pay each month on top of the total minimums. This is what powers the payoff.
Your debts (balance, rate, minimum)
Total balance ₹2,23,000 across 3 debts. Total minimums ₹10,500 a month, plus ₹8,000 extra = ₹18,500 a month toward debt.
Snowball
Smallest balance first
Debt-free in
1y 2m
- Total interest paid
- ₹20,828
- First debt cleared
- 1 month
Avalanche
Highest interest rate first
Debt-free in
1y 2m
- Total interest paid
- ₹20,226
- First debt cleared
- 4 months
The verdict
The avalanche method saves about ₹601 in interest. The snowball clears your first whole debt in 1 month, which is the motivation trade-off.
Both methods use the same monthly budget; only the order changes. The avalanche always pays the least total interest, while the snowball usually clears the first debt soonest. This is an educational estimate, interest is modelled monthly and your card's exact daily accrual and fees will differ.
How the calculator works
The calculator runs your debts through both payoff orders month by month. Each month it adds one month of interest to every balance, pays the minimum on every debt, then sends everything left over to the target debt. Under the snowball the target is the smallest balance; under the avalanche it is the highest interest rate. As each debt clears, its freed-up minimum rolls automatically into the next target, which is the snowball effect that both methods share.
The monthly budget is the sum of all your minimum payments plus the extra amount you enter. It stays constant through the whole payoff, so the only thing that changes between the two methods is the order in which debts are attacked. That is why the avalanche always pays the least total interest, while the snowball usually delivers the first fully cleared account soonest.
A worked example
Take the three Indian debts the calculator loads by default: a ₹8,000 buy-now-pay-later balance at 0%, a ₹35,000 credit card at 39%, and a ₹1,80,000 personal loan at 14%, with ₹8,000 extra a month above the ₹10,500 of minimums.
Here the avalanche saves only about ₹602, and both methods finish in the same 14 months, because the ₹8,000 extra is large relative to the balances. The real difference is the first win: the snowball closes the BNPL account in month 1, while the avalanche makes you wait until month 4 to clear anything. When the interest gap is this small, the faster win is usually the deciding factor.
When the avalanche gap widens
The avalanche earns its keep when a large, high-rate debt is not your smallest balance. Take a $900 medical bill at 0%, a $6,000 car loan at 7%, and an $8,000 credit card at 24%, with $150 extra a month:
Now the avalanche saves about $1,796 and finishes four months sooner, because it attacks the 24% card while the snowball leaves it accruing behind the smaller debts. The cost is patience: the snowball clears its first account in month 5, but the avalanche shows nothing fully paid until month 23. This is the honest trade-off the two methods always present, made concrete on numbers.
Pair this calculator with the guides
For the full mechanics of each method and why the snowball wins on completion even though it costs a little more, see How the Debt Snowball Method Works and How the Debt Avalanche Method Works. For the head-to-head with the behavioural research on which one people actually finish, see Debt Snowball vs Avalanche Method. To model the total cost of any single debt at a fixed payment, the loan calculator compares interest across three tenures.
Frequently asked questions
Which is better, the debt snowball or the avalanche?
The avalanche saves more money in every case where interest rates differ, because it clears your highest-rate debt first. The snowball clears your smallest balance first, so it gives you a whole paid-off account soonest, which keeps most people motivated. Enter your debts above and the calculator shows the exact gap in both interest and months. If the gap is small, the snowball's early win usually decides it; if it is large, the avalanche is worth the patience.
Does the avalanche always save money?
Whenever your debts carry different interest rates, the avalanche pays the least total interest, so it saves at least a little. But the size of the saving depends on the spread. With a healthy extra payment and similar rates, the two methods often finish in the same number of months and the interest gap is small. The saving grows when one large, high-rate debt is not your smallest balance, since the snowball leaves it accruing while it clears smaller debts first.
Should I include my mortgage or home loan?
No. Leave your mortgage or home loan out. Both methods are designed for consumer debts like credit cards, personal loans, buy-now-pay-later, car and two-wheeler loans, student loans, and medical bills. A home loan is far larger and is long-term secured debt, so including it would swamp the calculation and it is not the high-cost debt these methods are built to clear.
Why do both methods sometimes finish in the same number of months?
Because both use the same fixed monthly budget, only in a different order. When your extra payment is large relative to the balances, every debt clears quickly no matter the order, so the total time lands on the same month and only the interest differs slightly. The order matters much more, in both time and interest, when the extra payment is small and the payoff stretches over years.
What does 'not payable at this monthly amount' mean?
It means the monthly budget you entered barely covers the interest on a debt the method reaches late, so that balance never actually falls to zero. This happens most with a large balance at a very high rate. The fix is to raise the extra amount per month, or the situation may call for a different tool such as consolidation or credit counselling. The calculator flags it honestly rather than showing an impossible payoff.
Sources
- Gal and McShane, Can Small Victories Help Win the War? Evidence from Consumer Debt Management, Journal of Marketing Research, 2012
- Consumer Financial Protection Bureau, Debt management, consumerfinance.gov/ask-cfpb
- Ramsey Solutions, How the Debt Snowball Method Works, ramseysolutions.com
- Investopedia, Debt Avalanche, investopedia.com/terms/d/debt-avalanche.asp