A $400,000
home with 20%
$80,000 down, $320,000 borrowed. down, at 7.32%
for 30 years
$400,000
20%
$80,000 down, $320,000 borrowed.7.32%
30 years
with 1.1%
$367/mo — $4,400 a year on this home.0.35%
$117/mo — $1,400 a year on this home.$0.00
A $320,000 mortgage at 7.32% over 30 years is $2,198/mo in principal & interest — $2,682/mo with property tax and insurance — and $471,344 in total interest over 30 yr. Change any figure above to see your monthly payment, principal-vs-interest split, balance paydown, and how extra payments shorten the loan.
Seeded with the 30-year fixed average of 7.32% — Freddie Mac's weekly survey for the week of Oct 22, 2026. See rates back to 1971 →
Monthly payment breakdown— first payment
- Principal$246/mo9%
- Interest$1,952/mo73%
- Tax$367/mo14%
- Insurance$117/mo4%
Principal vs interest shown for the first payment — the principal share grows every month.
Where your money goes— over the whole loan
- Principal$320,00040%
- Interest$471,34460%
Payment composition by year— equity built vs money gone for good
Each month: equity built vs money gone— principal vs interest + tax + insurance
"Gone for good" = interest + property tax + insurance — money that never comes back. Equity/mo is the principal you pay off; it rises every month as the balance shrinks, and from month 280 your payment builds more than it burns.
Loan balance over time— remaining principal
Amortization schedule, by year
| Year | Principal paid | Interest paid | Balance |
|---|---|---|---|
| 1 | $3,055 | $23,323 | $316,945 |
| 2 | $3,287 | $23,092 | $313,658 |
| 3 | $3,535 | $22,843 | $310,123 |
| 4 | $3,803 | $22,575 | $306,320 |
| 5 | $4,091 | $22,287 | $302,229 |
| 6 | $4,401 | $21,977 | $297,828 |
| 7 | $4,734 | $21,644 | $293,094 |
| 8 | $5,092 | $21,286 | $288,002 |
| 9 | $5,478 | $20,900 | $282,524 |
| 10 | $5,892 | $20,486 | $276,632 |
| 11 | $6,339 | $20,040 | $270,293 |
| 12 | $6,818 | $19,560 | $263,475 |
| 13 | $7,335 | $19,044 | $256,140 |
| 14 | $7,890 | $18,488 | $248,250 |
| 15 | $8,487 | $17,891 | $239,763 |
| 16 | $9,130 | $17,248 | $230,633 |
| 17 | $9,821 | $16,557 | $220,812 |
| 18 | $10,564 | $15,814 | $210,248 |
| 19 | $11,364 | $15,014 | $198,884 |
| 20 | $12,225 | $14,154 | $186,659 |
| 21 | $13,150 | $13,228 | $173,509 |
| 22 | $14,146 | $12,233 | $159,363 |
| 23 | $15,217 | $11,162 | $144,147 |
| 24 | $16,369 | $10,010 | $127,778 |
| 25 | $17,608 | $8,770 | $110,170 |
| 26 | $18,941 | $7,437 | $91,230 |
| 27 | $20,375 | $6,003 | $70,855 |
| 28 | $21,917 | $4,461 | $48,938 |
| 29 | $23,576 | $2,802 | $25,361 |
| 30 | $25,361 | $1,017 | $0.00 |
Methodology#
Payments use the standard fixed-rate formula and assume a constant interest rate for the life of the loan. Property tax and homeowners insurance are estimated as an annual percentage of the home's value (US averages: ~1.1% tax, ~0.35% insurance) and added to the monthly payment as escrow — they don't affect the loan amortization. PMI and HOA dues are not included and vary by lender and location. "Extra / month" is applied to principal each month, which shortens the term and cuts total interest; the schedule is aggregated by year. Figures are estimates for planning, not a loan offer or financial advice.
FAQ#
- How is a monthly mortgage payment calculated?
- It uses the standard fixed-rate amortization formula — a level monthly principal-and-interest payment over the full term. For example, a $320,000 loan at 7.32% over 30 years works out to $2,198/month in principal and interest.
- What's included in the monthly payment?
- Principal and interest on the loan, plus optional escrow for property tax and homeowners insurance (estimated as a percentage of the home's value). PMI and HOA dues are not included — they vary by lender and location.
- How do extra payments save money?
- Any amount you add toward principal each month is applied directly to the loan balance, which shortens the term and cuts total interest. Set an extra-payment amount above to see exactly how many months and how much interest you'd save.
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