What a debt-free date is and how it is calculated

What the projection is actually doing

A debt-free date comes from running a simulation, not looking anything up in a table. Starting from your current balances, the calculation adds a month of interest to each debt, then subtracts that month's payment, for every debt you are tracking. It repeats this step for each debt every month until every balance reaches zero, and the month that happens is the projected debt-free date.

Why order matters when you have more than one debt

With multiple debts, the payoff method decides where extra money goes each month, which changes the simulation. Avalanche sends extra money to the highest-APR debt first, once minimums are covered everywhere else. Snowball sends it to the smallest balance first. The date itself is calculated the same way in either case, month by month, but which debt clears first, and sometimes the total interest paid, differs by method.

Why the date moves over time

A projected date is only as good as the inputs behind it. Add a new charge to a card you are paying down, and the balance the simulation starts from goes up. A rate increase on a variable-rate debt changes the interest added each month. Missing a payment or paying extra both shift the date too. None of this means the projection was wrong. It means the date reflects the newest information each time it runs.

Recalculating your own projection

You do not need special tools to sanity-check a debt-free date, just the same month-by-month steps.

1. List each debt's current balance, APR and the payment you plan to make.
2. Decide how extra money above minimums will be allocated across debts, if any.
3. For each month, add balance times APR divided by 12 to each debt, then subtract that month's payment.
4. Repeat until every balance reaches zero and count the months.
5. Rerun the projection whenever a balance, rate or payment changes.

Common questions

Does a debt-free date account for future purchases on a card?

No. The projection is based on the balance and payment you enter at the time it runs. New charges after that point are not part of the calculation until you update the balance.

Why did my debt-free date get later after I checked it again?

Usually because a balance went up, a rate changed, or a payment was smaller than planned. Recalculating with the current numbers is the only way to see an accurate updated date.

Is the debt-free date the same no matter which payoff method I use?

Not necessarily. Avalanche and snowball can produce slightly different total interest and sometimes a different overall date, since they send extra money to different debts first, even though every dollar available is the same.

Can I trust a debt-free date to the exact day?

Treat it as an estimate to the month rather than the day. Real statements involve billing cycle timing and small variations the simplified month-by-month calculation does not capture exactly.