Amortization Schedule Calculator
See a complete month-by-month breakdown of every mortgage payment. Understand exactly how much goes to principal vs interest over the life of your loan.
Last updated October 18, 2026
How our math works
- Fixed-rate loan of $360,000 at 6.75% interest for 30 years, fully amortizing
- Rates shown are interest rates used for estimation only — not APRs and not offers. APR reflects fees and other loan costs and may differ from the interest rate shown.
My scenario
Enter income, debts, price, and rate once. Every calculator pre-fills.
Loan Details
$
%
Extra Payments
$
Optional: pay extra each month to save on interest
Monthly Payment
$2,335
30-year fixed at 6.75%
$360,000
$480,583
133% of loan$840,583
30 yrs
360 paymentsPrincipal vs Interest by Year
Watch the ratio shift as you build equity
Full Amortization Schedule
Complete payment breakdown
| Year | Total Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $28,019 | $3,837 | $24,183 | $356,163 |
| 2 | $28,019 | $4,104 | $23,916 | $352,059 |
| 3 | $28,019 | $4,390 | $23,630 | $347,670 |
| 4 | $28,019 | $4,695 | $23,324 | $342,975 |
| 5 | $28,019 | $5,022 | $22,997 | $337,953 |
| 6 | $28,019 | $5,372 | $22,648 | $332,581 |
| 7 | $28,019 | $5,746 | $22,274 | $326,835 |
| 8 | $28,019 | $6,146 | $21,874 | $320,689 |
| 9 | $28,019 | $6,574 | $21,446 | $314,115 |
| 10 | $28,019 | $7,032 | $20,988 | $307,084 |
| 11 | $28,019 | $7,521 | $20,498 | $299,562 |
| 12 | $28,019 | $8,045 | $19,975 | $291,518 |
| 13 | $28,019 | $8,605 | $19,414 | $282,913 |
| 14 | $28,019 | $9,204 | $18,815 | $273,709 |
| 15 | $28,019 | $9,845 | $18,174 | $263,864 |
| 16 | $28,019 | $10,530 | $17,489 | $253,333 |
| 17 | $28,019 | $11,264 | $16,756 | $242,069 |
| 18 | $28,019 | $12,048 | $15,971 | $230,021 |
| 19 | $28,019 | $12,887 | $15,133 | $217,135 |
| 20 | $28,019 | $13,784 | $14,235 | $203,350 |
| 21 | $28,019 | $14,744 | $13,276 | $188,607 |
| 22 | $28,019 | $15,770 | $12,249 | $172,836 |
| 23 | $28,019 | $16,869 | $11,151 | $155,968 |
| 24 | $28,019 | $18,043 | $9,976 | $137,924 |
| 25 | $28,019 | $19,299 | $8,720 | $118,625 |
| 26 | $28,019 | $20,643 | $7,376 | $97,982 |
| 27 | $28,019 | $22,080 | $5,939 | $75,902 |
| 28 | $28,019 | $23,618 | $4,402 | $52,284 |
| 29 | $28,019 | $25,262 | $2,757 | $27,021 |
| 30 | $28,019 | $27,021 | $998 | $0 |
Lifetime Cost Summary
The total cost of your mortgage
Principal (what you borrowed)
$360,000
Total Interest Paid
$480,583
$840,583
$360,000 principal + $480,583 interest
Key Insights
What these numbers mean for you
Insight
Over the life of your loan, you'll pay $480,583 in interest — that's 133% of your original loan amount.
Year 1
In year one, 86% of your payment goes to interest. This ratio improves each year as you build equity.
Insight
Halfway through your loan (year 15), you'll have paid off 27% of the principal. Most of the equity builds in the second half.
The Bottom Line
Your $360,000 mortgage at 6.75% will cost you $2,335/month over 30 years. You'll pay a total of $480,583 in interest — that's 133% of what you borrowed.
Here are the exact formulas behind your numbers. No black boxes — just math.
Amortization Schedule Math
Monthly Payment
Interest Portion (Month M)
Principal Portion (Month M)
Remaining Balance
Total Interest
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Frequently Asked Questions
An amortization schedule lists every payment over the life of your loan, splitting each into interest and principal and showing the remaining balance. Early payments are mostly interest; the mix flips toward principal as the balance shrinks.
Interest is charged on the outstanding balance, which is largest at the start. At 6.75% on $360,000, your first payment includes about $2,025 of interest. As principal is retired, the interest portion falls and the principal portion grows.
Follow the balance column to where it hits 80% of your original home value — that is when you can request PMI cancellation (it ends automatically at 78%). With a small down payment and no prepayments, this often takes 5-10 years on a 30-year loan.
Yes. Toggle between yearly and monthly views, then use Download CSV to export the table you are looking at. The file opens in Excel, Google Sheets, or any spreadsheet app and includes payment, principal, interest, and remaining balance for each row.