How to Plan a Debt Payoff
By Tools Star Hub Editorial Team · Published · Updated
A debt payoff plan pays every minimum, then sends extra money to one balance at a time. Avalanche sends the extra to the highest APR. Snowball sends it to the smallest balance. With a $4,000 card at 22% and an $80 minimum, plus a $1,500 loan at 6% and a $50 minimum, an extra $100 a month finishes in 30 months and $1,312.48 interest on avalanche. Snowball takes 31 months and $1,615.98 interest. Minimums alone, with no extra, take 74 months and $4,028.40 either way.
Two debts with different rates and sizes do not shrink the same way. Paying the high rate first usually costs less interest. Paying the small balance first clears an account sooner and can be easier to stick with. This calculator shows both, using the balances, rates, and minimums you type. It is not a credit-counseling plan and it does not contact lenders.
How do avalanche and snowball differ?
Every open debt still gets its minimum. The extra payment, plus any minimum freed when a debt ends, goes to one target. Avalanche picks the highest APR, and breaks a tie toward the smaller balance. Snowball picks the smallest balance, and breaks a tie toward the higher APR.
In the sample, avalanche pays the 22% card first even though it is larger. That card ends in month 29 and the loan ends in month 30. Snowball pays the $1,500 loan first, in month 11, and the card lasts until month 31. The card-first path costs less interest in this sample.
What does the extra $100 change?
With the extra $100, avalanche interest is $1,312.48 and the total paid is $6,812.48. Snowball interest is $1,615.98 and the total paid is $7,115.98. The starting balances add to $5,500.
With extra set to 0, both strategies take 74 months and $4,028.40 in interest. The order of the extra payment is what separates them. If there is no extra, and no freed minimum to redirect, the strategies can match. They are not different labels for the same result once an extra payment exists and the debts disagree on size and rate.
What will the planner reject?
You can enter up to 12 debts. Each balance and minimum must be greater than 0, and each APR must be 100% or less. If a minimum does not cover that debt’s first month of interest, the page says the balance would not fall. A plan that is still open after 600 months says the payments do not pay the debts off within 50 years.
The model does not add new charges, fees, or a rate change. A card you keep spending on will not follow this schedule. Names are labels. A blank name becomes Debt 1, Debt 2, and so on.
How to plan a debt payoff
- List each balance, APR, and minimum. Use the current balance and the required payment. The minimum has to cover the first month of interest when the APR is above 0.
- Enter the extra you can add every month. Zero is allowed. The sample uses $100 so the two strategies separate.
- Compare avalanche and snowball. Read months, total interest, and the order the debts reach zero. The page shows both strategies.
- Treat the result as a plan, not a bill. Lenders can change minimums and rates. Re-run the numbers if a balance or a rate changes.
Example
Avalanche with $100 extra
The $4,000 card at 22% is paid in month 29. The $1,500 loan at 6% is paid in month 30. Total interest is $1,312.48 over 30 months.
Snowball with the same debts
The loan is paid in month 11 and the card in month 31. Total interest is $1,615.98 over 31 months. With no extra, both strategies take 74 months and $4,028.40 in interest.
Common mistakes
A sample can hide the difference
If the smallest debt is also the highest APR, avalanche and snowball pick the same target. The sample above separates them on purpose: the expensive debt is the larger one.
The minimum must beat the interest
A payment that does not cover the first month of interest is rejected. The balance would not fall.
FAQ
- Which debt is paid first in the sample?
- Avalanche pays the $4,000 card at 22% first, in month 29. Snowball pays the $1,500 loan at 6% first, in month 11.
- How much interest does $100 extra save in the sample?
- Avalanche finishes in 30 months with $1,312.48 interest. Snowball finishes in 31 months with $1,615.98. With no extra, both take 74 months and $4,028.40 in interest.
- How many debts can I enter?
- Up to 12. Each needs a balance and a minimum greater than 0, and an APR of 100% or less.
- Does the page contact my lenders?
- No. It schedules the numbers you type, in the browser, for at most 600 months.
- What if I keep charging the card?
- The plan assumes you do not add new balances. New charges need a new run with the new balance.
To compare avalanche and snowball on your balances, use the Debt Payoff Calculator. Extra payments go to one debt at a time.
A single card has its own minimum rule. See How long it takes to pay off a credit card.
A fixed installment payment is explained in How a loan payment is calculated.