Estimate your monthly payment by entering the amount borrowed, annual interest rate and number of months below. You will also see total interest and the overall cost. Your actual agreement may use different fees or payment dates.
Read the source: 1FFC · Official loan calculator
Estimate a monthly payment
Enter the annual interest rate from your offer. The estimate uses equal monthly payments.
Assumes constant interest, equal monthly periods and end-of-month payments. Excludes daily accrual, arrears, insurance refunds and prepayment penalties. A financed fee belongs in principal, not also in the separate fee field.
How the estimate works
The model uses equal monthly periods, a constant nominal rate divided by 12, and payments at the end of each month. It also handles a zero-interest loan. Real accounts can use daily accrual, different first-payment dates, fees or rounding rules.
Enter the right kind of rate
If you enter a fee-inclusive APR as the nominal interest rate, the estimate can differ from the contract. The calculator keeps an upfront fee separate and shows its effect on total outlay; it does not derive a legally disclosed APR.
Continue: Loan Early Payoff Calculator: Estimate Interest Savings
Read the results together
Monthly payment helps assess cash flow. Total interest and total outlay show the longer-term cost. No input is sent to a lender or saved by this site. Use the official company calculator for its own published example and the written offer for actual terms.
Continue: Loan Cost Comparison Calculator: APR, Fees and Payments
Frequently asked questions
Why can my actual payment differ?
Contract timing, fees, insurance, daily accrual and rounding can differ from this simplified monthly model.
Sources
Read the original documents and company pages behind this guide.
- 1FFC · Official loan calculator www.1ffc.com · reviewed October 16, 2026
- CFPB · Difference between interest rate and APR www.consumerfinance.gov · reviewed October 16, 2026
