instoloan.comFast online personal loan requests

Home / Guides / Short-term loans

What a $500 Loan Costs by Repayment Term

Published November 4, 2026 · 6 min read · instoloan.com editorial

When you borrow $500, the repayment term changes two things at once, and they pull in opposite directions. A longer term lowers the monthly payment, which can make the loan feel more affordable. At the same time it raises the total interest you pay, because the balance stays outstanding for longer. The figures below hold the rate fixed at a 150% APR so you can see the trade-off clearly: the monthly payment drops from about $210 to about $83, while the total interest climbs from $130 to $491.

Interest on a $500 loan at 150% APR, by term $1303 months $2406 months $3619 months $49112 months Repayment term
Same $500, same 150% APR. The longer the term, the more total interest you pay. The 12-month bar is highlighted because it costs the most.

The cost by term, in full

These figures assume a $500 loan at a fixed 150% APR, repaid in equal monthly payments. The monthly payment falls as the term lengthens, but the interest column, the true price of the loan, moves the other way.

TermMonthly paymentInterest paidTotal repaid
3 months$210$130$630
6 months$123$240$740
9 months$96$361$861
12 months$83$491$991

A smaller payment is not a cheaper loan. Stretching the same $500 from a 3-month term to a 12-month term nearly quadruples the interest, from $130 to $491, even though the monthly payment more than halves. Read the total repaid, not just the payment.

Why a longer term costs more

Interest is charged on the balance you still owe. Each month you carry the loan, more interest accrues, so holding a balance for 12 months instead of 3 means far more of these charges add up. A longer term spreads the same principal across more payments, which shrinks each one, but every extra month is another month of interest on what remains. At a 150% APR that effect is large, which is why the total nearly quadruples across the terms shown. The lower payment is real, but you are paying for the convenience with a much higher total cost.

How to keep the cost down

Frequently asked questions

Does a longer term lower the monthly payment?

Yes. On a $500 loan at 150% APR, the payment falls from about $210 over 3 months to about $83 over 12 months. The trade-off is that you pay interest for longer, so the total interest rises from $130 to $491.

Why does a longer term cost more in total?

Interest accrues on the balance you still owe each month. More months with a balance outstanding means more interest, even though each payment is smaller. At 150% APR the total interest on a $500 loan nearly quadruples going from 3 months to 12 months.

Are there cheaper options than a high-APR short-term loan?

Often yes. A credit-union payday alternative loan, a lower-APR personal loan, a paycheck advance, or a payment plan with the biller can cost far less. Compare the APR and the total repaid before you borrow.

instoloan.com is a loan-request service, not a lender, and does not make credit decisions or set rates. Short-term loan APRs can be high, so review each lender's Truth-in-Lending disclosure for the exact rate and total cost before you sign. If a loan is the right fit, you can see what lenders in the network may offer, with no cost to submit a request.

See what you may qualify for