How to use it
- Enter loan amount.
- Set annual interest rate.
- Choose term in years.
- Read monthly payment, total interest and total payment.
What it does – The Amortization Calculator takes your loan amount, annual interest rate and term, then instantly shows the fixed monthly payment, how much interest you’ll pay over the life of the loan, and the total amount you’ll have paid. Why it matters – Knowing the monthly payment helps you budget, while total interest reveals the true cost of borrowing. This prevents surprise expenses and lets you compare loan offers side‑by‑side. How to read the results – Monthly payment is the amount you’ll owe each month. Total interest is the sum of all interest charges. Total payment is the sum of principal and interest – the final amount you’ll have paid when the loan is fully amortized. The calculator assumes payments are made at the end of each month and that the annual rate is compounded monthly, which matches most standard loan agreements. Because the term is converted to months, you get a precise schedule regardless of whether the loan is 5, 15 or 30 years.
Pro tips
- Round the loan amount to the nearest dollar to avoid tiny rounding differences.
- Enter the interest rate as an annual percent (e.g., 4.5), not monthly.
- Check the term in years; the calculator will automatically convert to months.
- Compare multiple scenarios by adjusting one input at a time to see impact on total interest.
Real-life examples
- A first‑time homebuyer wants to know the monthly payment before making an offer.
- A small business owner is evaluating a equipment loan and needs total cost.
- A student refinancing a loan wants to see how a lower rate changes total interest.
Case study
Jane needed to decide between two mortgage offers. She entered $250,000, 3.8% and 30 years, saw a $1,163 monthly payment and $168,000 total interest, then chose the lower‑rate loan, saving $30,000 over the term.