Mortgage Amortization Calculator · Practical guide
Amortization Schedule for a 30-Year Mortgage
360 payments, each split between interest and principal — here is what the schedule really looks like.
At a glance
The Short Answer
A 30-year mortgage amortizes over 360 monthly payments. On a $300,000 loan at 6.5%, the payment is $1,896.20: the first one sends $1,625.00 to interest and only $271.20 to principal, and the schedule ends with $382,632 in total interest paid.
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Mortgage Amortization Calculator
Enter your own values, then compare the result with the examples below.
Results
Amortization Schedule
| # | Date | Payment | Principal | Interest | Balance |
|---|
How the Balance Falls
| Milestone | Interest That Month | Principal That Month | Balance After |
|---|---|---|---|
| Payment 1 | $1,625.00 | $271.20 | $299,728.80 |
| Payment 12 (end of year 1) | $1,608.40 | $287.81 | $296,647 |
| Payment 233 (crossover) | $946.50 | $949.70 | $173,789 |
| Payment 360 (final) | $10.22 | $1,885.99 | $0.00 |
Why the Early Years Feel Slow
Interest each month equals the balance times the monthly rate (0.065 ÷ 12 = 0.005417). Because the balance starts large, 86% of the first payment is interest. After a full year of payments totaling $22,754, the balance has dropped by only about $3,353 — barely 1.1% of the loan.
The Crossover Point
Principal overtakes interest around payment 233 — roughly 19 years and 5 months in on a 6.5% loan. From there the balance falls faster and faster, which is why the final years of a mortgage build equity so quickly.
Get Your Exact Schedule
Enter your loan amount, rate, term, and start date above to generate all 360 rows with payment dates, the principal and interest split, and the running balance — then copy or print the table for your records.
Frequently Asked Questions
Does a 30-year amortization schedule include taxes and insurance?
No. The schedule covers principal and interest only. Property taxes, homeowners insurance, and HOA fees are separate escrow items that do not reduce your balance.
How much interest do I pay over 30 years on $300K at 6.5%?
$382,632 — about $1.28 of interest per dollar borrowed. Multiply the $1,896.20 payment by 360 months, then subtract the $300,000 principal.
Why is my last payment slightly different from the others?
Rounding each payment to the cent leaves a few cents of drift over 360 months, so lenders adjust the final payment by a small amount to zero out the balance exactly.
Can I print or export the schedule?
Yes. Select and copy the generated table into a spreadsheet, or use your browser's print function to save it as a PDF.