Does a result mean I will be approved?

No. Approval, pricing and terms depend on a lender's underwriting and disclosures.

What loan types fit this model?

It fits fixed-rate, fully amortizing installment loans with monthly payments. It does not model revolving credit, balloon payments or changing rates.

Are origination fees included?

Not automatically. Include a financed fee in principal only if it will be repaid through the loan; treat upfront fees separately.

Why can a lender's payment differ?

Payment dates, day-count conventions, fees, insurance, rate precision and rounding policies can produce differences.

What happens at zero percent interest?

The calculator divides principal by the number of months and adjusts the final payment for cent rounding.

Fixed-Rate Loan Payment Calculator

Model a generic amortizing installment loan from assumptions you enter.

Monthly payment

Total interest

Zero-interest handling

CurrencyAmount borrowedEnter the amount financed after any upfront payment or fee.Fixed annual interest rateEnter a nominal annual rate supplied by you; this is not a live rate quote.Term in months

How to Estimate a Loan Payment

Use one currency throughout and enter the amount actually financed, a fixed nominal annual rate and the number of monthly payments.

Select a display currency; no exchange-rate conversion occurs.

APR is not always the note rate

This payment formula uses the entered interest rate. An APR may include certain finance charges and therefore should not automatically be substituted for the contractual note rate.

A Generic Amortizing Loan—not an Offer

This canonical calculator covers a level-payment loan with a fixed rate and monthly payments. Each payment first covers accrued monthly interest and then reduces principal. The model assumes payments arrive on schedule, there are no extra payments, and the rate does not change. Origination fees and add-on products are excluded unless you include them in principal. Results cannot predict underwriting, approval, available rates or lender-specific rounding.

Loan Payment Examples

Five-year installment loan

Entered assumptions

principal:25000

annualRate:7.5

termMonths:60

Estimated payment

About 500.95 per month

The estimate uses 60 equal scheduled payments before the final rounding adjustment.

Zero-interest financing

Entered assumptions

principal:12000

annualRate:0

termMonths:12

Estimated payment

1,000.00 per month

With no interest, principal is divided evenly by the number of payments.

Test more than one term

A longer term can reduce the scheduled payment while increasing total interest.

Frequently Asked Questions

No. It uses only the rate you enter and does not access live lender rates.

Still have questions about this calculation?

Try the Calculator

Fixed-Rate Loan Formula

The standard ordinary-annuity equation solves for a level monthly payment.

Formula

M = P × r / (1 − (1 + r)^−n)

Positive-rate payment

M = P × r / (1 − (1 + r)^−n)

Zero-interest payment

M = P / n

Totals

total payments = sum of rounded schedule payments; total interest = sum of rounded monthly interest

Scientific Background

The implementation rounds payment-period interest and principal to cents and adjusts the last payment. A lender may use different day-count, accrual or rounding rules.