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View your mortgage payoff schedule with a detailed amortization table showing principal and interest payments.
Monthly Payment
$1,896.20
Total Interest
$382,633.47
Total Paid
$682,633.47
Everything you need to know
Amortization is the process of breaking down a loan into a series of fixed payments over time, gradually reducing the balance to zero. An amortization schedule shows exactly how much of each monthly payment goes toward principal (reducing your debt) and how much goes toward interest (cost of borrowing). Understanding your amortization schedule reveals a powerful truth: early in your mortgage, you're mostly paying interest. Over time, this flips, with more going toward principal.
A typical 30-year mortgage might have 80% of the first payment going to interest and only 20% to principal. By year 20, this reverses—80% principal, 20% interest. Seeing this breakdown helps you understand why extra principal payments early in your mortgage are so powerful: they reduce the balance when interest is highest, compounding into massive long-term savings.
Using our mortgage amortization calculator is straightforward:
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M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ]
Where:
First Payment:
Interest = P × i
Principal = M - Interest
Subsequent Payments:
Interest = Remaining Balance × i
Principal = M - Interest
Balance = P - (Cumulative Principal Paid)
Or calculated iteratively from monthly payments.
$300,000 loan at 6% APR, 30 years
Month 1:
Month 180 (Year 15):
Month 360 (Year 30):
Insight: In year 1, 83% goes to interest. By year 15, split nearly evenly. By year 30, nearly all principal. This is why extra early payments matter.
$250,000 mortgage, 6.5% APR, 30 years
Year 1:
Year 5:
Year 10:
Year 15:
Year 20:
Analysis: Takes 15 years to build 50% equity, but only 5 more years (20 total) to reach 78% equity. Acceleration is real!
$200,000 mortgage, 5.5% APR, 30 years
Standard Schedule (no extra payments):
With $100 extra monthly:
With $200 extra monthly:
$300,000 loan at 6% APR
30-Year Mortgage:
15-Year Mortgage:
Analysis: 15-year forces discipline, saves enormous interest. But requires $888 more monthly. Many choose 30-year with extra $200-300 payments as compromise.
$250,000 mortgage, 6% APR, 30 years
Annual Interest Paid (first 5 years):
Tax Benefit (assuming 22% tax bracket):
After Year 15:
Insight: Tax benefits are largest early in mortgage. This is why some financial advisors recommend 30-year mortgages (longer interest deduction) over 15-year. However, the tax savings don't fully offset the extra $165k in interest—paying off faster is still typically better financially.
Standard mortgages are heavily front-loaded with interest. You could pay the loan for 15 years and still owe 35% of the original principal due to interest accumulation. This is why refinancing early or paying extra principal makes sense.
Equity builds slowly early, then accelerates. In years 1-5, you build ~16% equity. In years 5-10, you build ~12%. In years 25-30, you build ~12% again (smaller dollar amounts). The percentage is steady, but absolute dollar equity builds faster mid-life due to larger principal payments.
A 1% higher rate dramatically increases total interest paid. 5% vs 6% on $300,000 mortgage: difference is ~$55,000 over 30 years. This shows why shopping for rates matters—even 0.25% differences = $13,000 savings.
Extra payments early are most valuable. Paying extra $200/month in month 1 saves roughly $200 × 360 future months = $72,000+ due to compounding interest prevention. Same $200 in month 300 saves maybe $100 (only 60 months of interest remaining).
| Rate | Monthly Payment | Total Paid | Total Interest |
|---|---|---|---|
| 3% | $460.65 | $27,639 | $2,639 |
| 4% | $472.00 | $28,320 | $3,320 |
| 5% | $483.32 | $28,999 | $3,999 |
| 6% | $494.69 | $29,681 | $4,681 |
| 7% | $506.12 | $30,367 | $5,367 |
Each 1% increase in interest rate adds approximately $670-700 to total interest.
FAQ
What is a mortgage? A mortgage is a loan used to purchase real estate, typically repaid over 15-30 years.
What affects my mortgage rate? Credit score, loan amount, down payment, loan term, current market rates, and property type all affect rates.
Should I choose 15-year or 30-year mortgage? 30-year has lower payments, 15-year builds equity faster and costs less in interest. Choose based on budget.
Mortgage Calculator • Amortization Calculator • Loan Calculator
This calculator is provided for educational and informational purposes only. It is not financial, legal, tax, or investment advice. The results are estimates based on the assumptions and inputs you provide.
Actual results may differ significantly due to:
Please consult with a qualified financial advisor, tax professional, or attorney before making any financial decisions. Past performance does not guarantee future results. Always verify important calculations independently before relying on them.