Wraplet guide
How Loan Payments Work
Learn how loan monthly payments are estimated, what principal and interest mean, and why loan term changes total cost.
Principal, rate, and term
A standard loan payment is based on the amount borrowed, the annual interest rate, and the number of monthly payments.
Longer terms usually reduce the monthly payment but increase total interest because the debt remains active for more months.
Monthly payment formula
Monthly payment = P x r(1+r)^n / ((1+r)^n - 1).
P is loan principal, r is the monthly interest rate, and n is the number of monthly payments.
Frequently asked questions
Does the loan calculator include taxes or fees?
No. It estimates principal and interest only unless a tool specifically includes extra costs.
Why is total interest higher on a longer loan?
A longer loan gives interest more time to accumulate, even if the monthly payment is lower.