How long to pay off debt: estimate your timeline

Resources · Paying off debt · 5 min read Starting out

Key points

Three numbers decide how long it takes: what you owe, the interest rate and what you pay each month.
Your payment must be bigger than the monthly interest, or the debt never shrinks.
Small increases in payment can cut years off, especially when the payment is close to the interest.
With several debts, the order you pay them in also changes the date.

How long to pay off debt: the three numbers

How long to pay off debt comes down to what you owe, what it costs you and what you pay. That’s it. And the part that really matters is the gap between your payment and the monthly interest, because that gap is the only money actually shrinking the balance. Widen it and you finish sooner.

So let’s pin down each number.

1. The balance

Use the current balance from your latest statement or online account. Not the amount you first borrowed. If you’ve got more than one debt, list every debt you owe before you do anything else.

2. The interest rate

Find the annual rate, often shown as APR. Want a rough monthly cost? Divide the rate by 12 and multiply by the balance. How interest works on debt walks through it in more detail.

3. The monthly payment

This is what you actually pay, which may be more than the minimum. If the amount bounces around from month to month, pick a figure you can count on.

The first check: does your payment beat the interest?

Before you even think about a date, put your payment next to one month’s interest.

Say you owe $8,000 at 20% a year. One month’s interest is about $133.33 ($8,000 × 20% ÷ 12). Pay less than that and the balance grows, even though you’re paying every single month. Pay a little more and it falls, but slowly. Pay a lot more and it drops fast.

If your payment doesn’t cover the interest, there’s no finish date to find. Simple as that. When repayments don’t cover the interest shows what that looks like, and free debt help is there if that’s where you are right now.

How your payment changes the time to pay off debt

Back to that $8,000 debt. The maths works the same in any currency.

Assumptions: $8,000 at 20% a year, interest charged monthly (20% ÷ 12) on the balance before each payment, a fixed payment every month, no new borrowing, and a final payment that’s whatever clears the balance.

Monthly payment	Time to pay off	Total interest
$150	133 months (about 11 years)	$11,939.45
$200	67 months (about 5½ years)	$5,293.31
$250	47 months (about 4 years)	$3,527.33
$350	30 months (2½ years)	$2,154.80

Look at the jump from $150 to $200. Just $50 more a month roughly halves the time and saves $6,646.14 in interest. Why so dramatic? At $150, only about $17 of the first payment touches the balance. At $200, about $67 does. That’s four times the progress for a third more money.

This is why the timeline is so touchy when your payment sits close to the interest. Every extra dollar goes straight to the balance, and that effect builds month after month.

What else moves the date

The payment isn’t the only lever. New spending is the big one working against you, because adding to a card you’re paying down just stretches everything out. Lump sums work the other way: a tax refund, a bonus or selling something you no longer need can knock months off (see putting a windfall toward debt).

Rates can shift too. A variable rate going up, or a promotional rate ending, makes each month cost more. Late fees and annual fees quietly pile onto the balance.

And if you have several debts, the order matters. Putting extra toward the highest rate first usually saves the most interest. Putting it toward the smallest balance usually clears a debt sooner, which some people find keeps them going. Either way, the final date moves a little.

Why a calculator beats mental maths

Interest gets recalculated every month on a shrinking balance, so the line to zero isn’t straight. Dividing the balance by your payment will always give you an answer that’s too short.

Take the $8,000 example at $250 a month. Dividing gives 32 months. The real answer is 47. The gap between those two numbers is the interest.

Add a few debts, minimums that change and payments that roll from one debt to the next, and the maths gets messy fast. A calculator that runs month by month gives you a far more honest date.

Common questions

How long does it take to pay off debt with minimum payments?

Often many years. Card minimums are often tied to the balance, so they can shrink as it falls, so the finish line keeps drifting away. Why minimum payments take so long shows the maths step by step.

How do I calculate how long it will take to pay off my credit card?

You need three things: the balance, the annual rate and your monthly payment. Interest is charged each month on whatever’s left, so a month-by-month calculator gives you the most realistic answer.

Does paying twice a month pay off debt faster?

Splitting the same total into two payments can trim a little interest on some debts, depending on how the interest is worked out. But paying a bigger total each month makes a much bigger difference.

Try it

Enter all your debts and your monthly budget to find your Freedom Date, the month you could be debt-free. Just one card? Try the credit card payoff calculator.

General information only, not financial advice. Your situation is your own.