LendMap USALoan rules, companies & costs — mapped

Installment math · Amortized, not estimated

Installment loan calculator

Pick an amount and a term: the calculator prices the installment market's common sizes at the 36% benchmark APR and shows the monthly payment, the total interest and what each credit tier changes. The math is the standard amortization formula — no email, no soft pull, no invented quotes.

Precomputed rows

Every common size at the 36% benchmark

Amount 12 mo payment 18 mo payment 24 mo payment Total interest, 24 mo
$1,500 $150.69$109.06$88.57 $625.71
$2,000 $200.92$145.42$118.09 $834.28
$3,000 $301.39$218.13$177.14 $1,251.41
$4,000 $401.85$290.83$236.19 $1,668.55
$5,000 $502.31$363.54$295.24 $2,085.69

Fixed 36% APR, standard amortization — the ceiling benchmark this market quotes where no lower state schedule applies. Amount pages carry each state's lawful structure; the lender's disclosed APR and total of payments are the binding figures.

What the credit tier changes

Same $3,000 over 24 months — the only variable is the rate your profile commands:

Credit tier APR Monthly payment Total interest
Strong credit 8% $135.68 $256.36
Average credit 15% $145.46 $491.04
Damaged credit 30% $167.74 $1,025.72

The gap between the top and bottom tier on this one loan is $769.36 — more than half the amount borrowed. Where your quotes land in the bottom tier, shrinking the amount or the term, or a credit-union PAL at the 28% federal cap, usually beats stretching expensive months.

Questions people ask about installment payments

How is an installment loan payment calculated?

With the standard amortization formula: payment = P × r ÷ (1 − (1 + r)^−n), where P is the amount borrowed, r is the monthly rate (APR ÷ 12) and n is the number of monthly payments. A $3,000 loan at 36% APR over 24 months works out to $3,000 × 0.03 ÷ (1 − 1.03^−24) ≈ $177.14 a month — 24 payments totaling $4,251.36. The calculator above runs this math for every size and term in this market.

What APR do installment loans charge?

It depends on the license and your credit. State-licensed installment lenders price against each state's small-loan caps; where no payday-style fee schedule exists, 36% APR is the common benchmark ceiling this market quotes — and the figure our tables use. Strong credit can land in the single digits; damaged credit on unlicensed or tribal products can face triple digits. The lender's written APR and total of payments are the only binding numbers.

Can I pay off an installment loan early?

With a compliant licensed loan, yes, without a penalty — prepayment penalties are banned for most consumer installment credit, and the interest you avoid simply never accrues. Confirm the line in your agreement before signing: any lender charging an early-payoff fee has said so in the contract, and that clause is a reason to walk. Paying early is the single cheapest way to cut this product's cost.

Is an installment loan cheaper than a payday loan?

Per dollar and per month, almost always. A $300 installment loan at the 36% benchmark over 3 months costs about $34 in interest; a storefront payday fee for the same $300 runs $45–$75 for two weeks in the states that allow it — and renewal doubles it. The installment product buys the same cash at a fraction of the annualized cost, which is why it is the licensed route in states that price payday out of the market.

How much installment loan can I get?

Online installment lenders typically offer $1,500–$5,000, sized against your income and credit profile; federal credit-union PALs run $200–$2,000 under a 28% APR ceiling. Amount caps are also a state matter — the state guides linked from the table above list each jurisdiction's ceiling and the regulator to check it with.

LendMap USA is an information platform, not a lender: this calculator computes the arithmetic of published benchmarks — it is not an offer of credit.