Adjusted Money

How the calculator works—in plain English.

You tell us what you owe, your interest rate, and what you pay each month. We estimate when the debt could be paid off. Then we show what might change if you put a little more toward it.

Calculator model 1.0Last reviewed August 22, 2026
01

We estimate your debt one month at a time.

Imagine moving through your debt one month at a time. First, interest is added. Then your payment is taken out. Whatever is left becomes the starting balance for the next month.

1Add that month’s interestThe amount is based on the balance and APR you entered.
2Subtract your paymentYour payment covers interest first. The rest reduces the debt.
3RepeatWe keep going until the estimated balance reaches zero.
Show the math
Monthly rateAPR ÷ 100 ÷ 12
Monthly interestBalance × monthly rate
Next balanceBalance + interest − payment

The final payment is limited to what is still owed. Projections stop after 1,200 months.

02

We turn different spending habits into monthly amounts.

A coffee purchase happens several times a week. A subscription happens monthly. A yearly membership happens once a year. To compare them fairly, we turn each one into an average monthly amount.

Per-use spending$7 coffee, 4 times a week becomes about $121 a month.
Monthly billA $20 subscription stays $20 a month.
Yearly purchaseA $120 membership becomes $10 a month.
One-time spendA $600 purchase is shown as $50 a month for 12 months.
Show the spending formulas
Per useCost × uses per week × 52 ÷ 12
Yearly or one-timeTotal cost ÷ 12
03

We compare what you pay now with what you could pay.

Original payment+Monthly spending reduction=Potential new payment

The first path keeps your payment exactly as it is. The second adds the money you think you can free up from spending. We compare the two paths to show the possible difference in payoff time and interest.

This is only a what-if plan. Adjusted Money does not move your money or guarantee that you will save the amount shown.

04

Sometimes a payment is too low to shrink the debt.

If the payment does not cover that month’s interest, the balance can grow even though you are paying. If it covers only the interest, the balance stays about the same.

When this happens, we show the smallest payment that would begin reducing the balance. That number is only a starting line—not a recommended payment. Paying more would create a more meaningful payoff path.

05

A simple example

Suppose someone owes $8,500 at 22.9% APR and pays $225 each month. Then they find $60 in monthly spending they can put toward the debt instead.

Current payment$225/month68 months · $6,691 interest
After redirecting $60$285/month45 months · $4,195 interest
Estimated difference23 months soonerAbout $2,496 less interest

In this example, the extra $60 could shorten the estimate by 23 months and reduce estimated interest by about $2,496. Results are rounded, so totals may differ by a few cents if you calculate them by hand.

06

To make the estimate, we assume a few things stay the same.

  • Your interest rate does not change.
  • You make the same payment every month.
  • You do not add new purchases or miss a payment.
  • No fees or penalties are added.
  • Your lender allows extra payments without a penalty.
  • The extra money goes to this debt every month.
07

Your lender’s number may be different.

This free calculator looks at one debt with one interest rate. It does not know your lender’s exact rules. It also does not include changing rates, special promotional offers, late fees, new purchases, multiple debts, refinancing, forgiveness programs, or special student-loan payment plans.

08

Your numbers stay in your browser.

You do not need an account to use the Free calculator. Adjusted Money does not save the balance, interest rate, payment, or spending amounts you type into it.

Try the numbers yourself.

Change one input at a time to see how each assumption affects the estimate.

Open the debt calculator →