The Four-Year Personal Loan

What 48 months costs at common amounts

The table shows the monthly payment and, in brackets, the total interest over four years, with a fixed rate, equal monthly payments and no fees. These are worked examples, not offers.

At four years the rate starts to weigh heavily. On $20,000, the gap between 10% and 20% APR is about $101 a month and almost $4,900 over the life of the loan. The payment by loan size calculator tests the rates you are offered.

Is the fourth year worth it?

The useful question is what each extra year buys. Here is $20,000 at 14% APR, with the rate held equal across terms.

Going from 36 to 48 months lowers the payment by $137.02 and adds $1,625.53 of interest: about $11.86 of interest for each dollar of monthly relief. Going from 48 to 60 lowers it by only $81.16 and adds $1,688.48, about $20.80 per dollar. The relief shrinks with each added year while the cost does not, so the fourth year is usually the better buy of the two.

Lenders also often price longer terms higher. If a lender charged 15% for 48 months instead of 14%, the payment would be $556.61 and the interest $6,717.52, about $2,110 more than the 36-month loan at 14%. Compare real offers side by side in the loan term comparison.

Four rings: how the balance falls

You pay about $6,558 each year. In the first ring 38.9% of it is interest; in the fourth, 7.2%. After two years you have repaid 43% of the principal but already paid 72% of the interest. That is the reason to make any extra payments early, and the reason a refinance late in year three or four rarely saves much.

Four years is a long time to carry a payment

A lot can change in four years: a car to replace, a move, a child, a new job. Through all of it the $546.53 payment stays in your budget, and any lender you apply to counts it in your debt-to-income ratio. Two years in, you still owe $11,382.98 on the example loan; three years in, $6,086.95. If you expect to need more credit before the fourth ring closes, size the loan with that in mind. A second personal loan covers what lenders look at when you already have one.

When the extra year is worth it

• The 36-month payment fails a lender's ratio. At a 36% debt-to-income limit, the $137 lower payment needs about $381 less gross monthly income. That can decide whether you qualify for the amount you need. Debt-to-income and loan size explains the test.
• You need a buffer. $137 a month is about $1,644 a year left in your account for car repairs and bills that do not wait.
• The purpose outlasts four years. A roof repair, a furnace or consolidated balances you will not run up again. A trip or a wedding is over long before the fourth ring.

The extra year is not worth it when the relief is small next to your budget, or when the longer term comes with a noticeably higher rate. In that case, borrow less or keep the three-year term. The borrowing room calculator shows how the payment fits your income.

Take four years, pay like three

If the 48-month loan has the same APR as the 36-month loan and no prepayment penalty, you can choose the longer term and pay the 36-month amount anyway. On the $20,000 example, paying $683.55 a month clears the 48-month loan in 36 months with the same $4,607.89 of interest. The lower required payment stays available in a bad month.

Who offers 48-month loans

Banks, credit unions and online lenders commonly list 48 months among their terms. Some lenders keep longer terms for larger amounts or stronger credit, so on a small loan the longest term offered may be 36 months. The Federal Reserve's G.19 release does not track a four-year personal loan; its bank benchmark is the 24-month loan, at an average 11.90% APR in the third quarter of 2026. Expect four-year offers at or above that level. On the Truth in Lending disclosure, check that the number of payments is 48 and compare the finance charge with any 36-month offer.

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