Where do calculations run?

This tool runs in your browser for quick estimates. Use consistent units and verify critical figures independently.

Vendora

Small business calculator

Amortization Calculator

Estimate the periodic payment on an amortized loan. Choose loan amount, term, interest rate, compounding frequency, payment frequency, and an optional extra payment per period.

Inputs

Payment is computed using the effective interest rate per payment period. Extra payment reduces principal faster and can shorten payoff time.

Loan amount

Amortization term Years.

Interest rate Annual nominal rate (%).

Compounding frequency

Payment frequency

Extra payment

Optional extra principal per payment period.

Results

Payment shown is the scheduled amortizing payment (excluding extra). Totals include extra payments if provided.

Payment per period —

Total interest (approx.) —

Total paid (approx.) —

Payoff time (periods) —

Example

A $250,000 loan for 5 years at 8.5% with monthly payments produces a fixed monthly payment that amortizes the balance to zero by the end of the term.

How it works

We compute an effective interest rate per payment period from the nominal annual rate and selected compounding/payment frequencies, then apply the standard amortizing payment formula. With extra payments, we simulate period-by-period payoff.