A worked example
A $200,000 loan at 6% over 30 years has a monthly payment of about $1,199. In month one, $1,000 of that is interest and only about $199 reduces the balance. By the final month, that split has essentially reversed.
Frequently asked questions
What's the difference between this and the Loan Calculator?
The Loan Calculator focuses on the headline numbers — monthly payment and total interest — with a yearly summary. This tool is built around the schedule itself: every individual month, in order, for when you need the full detail rather than just the totals.
Why does the principal portion of each payment grow over time?
Interest is charged on the remaining balance, which shrinks every month. Since the total payment stays fixed, whatever isn't consumed by interest goes to principal — as the balance falls, interest's share of the payment falls too, so principal's share rises. Early payments are interest-heavy; late payments are principal-heavy.
Can I see what happens partway through the loan, not just the start?
Yes — switch to the full schedule view and scroll to any month. It's useful for checking your balance at a specific point, for example before a planned refinance or sale.
This calculator provides estimates for general informational purposes only. Your actual lender's schedule may differ slightly based on exact payment dates and day-count conventions.