Personal Loan Calculator

Knowing what a loan truly costs in 2026 means looking past the monthly payment alone. Enter your loan amount, interest rate, and term, and you'll see the estimated monthly payment, the total interest paid across the life of the loan, and the effective Annual Percentage Rate (APR) once origination fees are folded in. That full accounting lets you line up competing offers on equal terms and choose with your eyes open.

Two layers of math produce these results. Monthly payments come from the amortization formula M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1], where M is the monthly payment, P the principal, i the monthly interest rate, and n the total number of payments. The effective APR takes more work: the calculator solves iteratively for the rate that equates the present value of every payment — with the origination fee deducted from the principal you actually receive — to the amount disbursed to you.

Of all the figures here, APR is the one that lets you compare loans honestly, because it rolls every mandatory cost into a single rate. Watch for lenders that dangle a low advertised rate and then attach a steep origination fee; that gap surfaces in the effective APR shown above. And always check whether the quoted rate is fixed or variable, since a variable rate can drift and reshape your payments down the road.