Use the Snowball or Avalanche method to build a personalized plan and see exactly when you will be debt-free.
List every debt you want to pay off. Include the current balance, your annual interest rate (APR), and the required minimum monthly payment your lender charges.
Both strategies use the same total monthly payment. The difference is which debt gets the extra money first. See below for a full explanation of each method.
Apply your extra payment to the debt in the 1st position. Once it is paid off, roll its entire payment (minimum + extra) onto the next debt in the list.
| Order | Debt Name | Balance | APR | Min. Payment | Payoff Month | Interest Paid |
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Everything you need to know about these two proven debt payoff strategies - explained in plain language.
The Debt Snowball Method was popularized by personal finance author Dave Ramsey. The core idea is simple: list all of your debts from the smallest balance to the largest balance, completely ignoring the interest rates. You pay the minimum monthly payment on every single debt, and then you throw every extra dollar you have at the smallest debt until it is completely gone.
Once that first debt is eliminated, you take the entire amount you were paying toward it (minimum payment plus any extra) and add it to the payment you are already making on the second-smallest debt. Your payment "snowballs" - it gets bigger and bigger with each debt you pay off, letting you attack the next one with even more power.
The biggest advantage of the Snowball method is behavioral and psychological. By targeting the smallest balance first, you are almost guaranteed to fully eliminate at least one debt relatively quickly. That win feels fantastic. Behavioral economists and psychologists have found that these small, early victories release motivational energy that helps people stay consistent with a debt payoff plan long-term - even when the math might not be optimal. If you have struggled with debt payoff attempts in the past, the Snowball method may be exactly the momentum-builder you need.
The Debt Avalanche Method is the mathematically optimal approach to debt elimination. Instead of ordering debts by balance size, you order them by interest rate (APR) from highest to lowest. You still pay the minimum payment on every debt, and you apply all extra money to the debt charging you the highest interest rate first.
The logic is straightforward: your high-interest debts are the ones costing you the most money every single month. A credit card at 24% APR generates nearly twice the monthly interest of a personal loan at 12% APR on the same balance. By targeting and eliminating the highest-rate debt first, you reduce the total interest you pay as quickly as possible - leaving more of your money available to pay down principal rather than feeding interest charges.
In nearly every scenario, the Avalanche method results in paying less total interest and becoming debt-free sooner than the Snowball method - sometimes by hundreds or thousands of dollars. The trade-off is that it can take longer to get that first "win" of fully eliminating a debt, which some people find discouraging. The Avalanche method works best for disciplined, analytically-minded individuals who are motivated by data and long-term optimization rather than short-term milestones.
On a purely mathematical level, the Debt Avalanche method almost always wins. By attacking high-interest debt first, you slow down the compounding of interest across your entire portfolio of debts. This reduces the total interest you pay and, in most cases, shortens the total time to debt freedom - sometimes by months, occasionally by years, depending on your specific debt mix.
However, personal finance is personal. Research in behavioral economics - including work cited by journals like the Journal of Marketing Research - consistently shows that many people are more successful with plans they can actually stick to. The "best" strategy is the one you will follow consistently for months or years without giving up. If the Snowball method's early wins keep you motivated and prevent you from abandoning your plan, it will save you far more money than the Avalanche method you quit after three months.
Use this calculator's comparison box to see the exact dollar difference between the two methods for your specific debts. If the Avalanche savings are significant (hundreds or thousands of dollars), that extra motivation alone might be enough to keep you on the Avalanche track. If the difference is small - perhaps $50 or $100 - you should strongly consider the Snowball's motivational edge. There is no universally correct answer.
The rollover mechanic is the engine that makes both the Snowball and Avalanche strategies so powerful. Here is a concrete example: suppose you have three debts with minimum payments of $50, $75, and $120 per month, and you have an extra $100 per month to throw at debt.
Your total monthly outlay is $50 + $75 + $120 + $100 (extra) = $345 per month. You target the first debt with $50 (minimum) + $100 (extra) = $150 per month. When that first debt is fully paid off, you do not reduce your monthly spending - you maintain the full $345 output. Now, the entire $150 you were paying on debt one rolls over to debt two: $75 (its old minimum) + $150 (rolled over) = $225 per month toward debt two. When debt two is gone, all $345 hits the final debt. That compounding momentum is called the debt rollover - and it dramatically shortens your timeline.
The critical discipline required: when a debt is paid off, do not lifestyle inflate. Resist the temptation to spend the freed-up minimum payment. Keep your total monthly debt outlay exactly the same and redirect every dollar to the next target. This single habit separates people who become debt-free quickly from those who stay trapped in minimum-payment cycles for decades.
Beyond choosing the right strategy, the single most impactful variable in this calculator is the Extra Monthly Payment field. Even a modest increase can compress your debt-free date significantly. Before trying to increase income, audit your current spending for subscriptions, dining, and discretionary purchases that can be temporarily redirected to debt. Many people find an extra $100 to $300 per month without any income change at all.
Consider periodic lump-sum payments as well. Tax refunds, bonuses, birthday gifts, or proceeds from selling unused items can be applied directly to your target debt as one-time extra payments. A single $500 payment applied to a 22% APR credit card saves you far more than that $500 in future interest charges.
If you carry high-interest credit card debt, explore whether you qualify for a balance transfer card with a 0% introductory APR. Moving a $5,000 balance from 22% to 0% for 15 months and aggressively paying it down during the promotional window can save hundreds of dollars - but only if you are disciplined enough to not rack up new charges during that period. Similarly, a personal debt consolidation loan at a lower interest rate than your existing debts can reduce total interest and simplify your payment structure.
Finally, automate your payments wherever possible. Set up automatic transfers for the exact amount shown in your payoff plan on payday, before the money is available to spend elsewhere. Automation removes willpower from the equation - the most reliable way to stay consistent month after month.