Finance tool
US loan & mortgage calculator
Loan amount, interest rate, and term → monthly payment, total interest, and full amortization schedule.
Interactive tool
US loan & mortgage calculator
Monthly payment, total interest, and full amortization schedule.
Payment per period
$2,097
$279,210 total interest over 25 years
Remaining balance over time · bars show annual interest paid
Total paid
$629,210
Total interest
$279,210
Interest share
44.4%
Amortization schedule
| # | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $2,097 | $566 | $1,531 | $349,434 |
| 2 | $2,097 | $569 | $1,529 | $348,865 |
| 3 | $2,097 | $571 | $1,526 | $348,294 |
| 4 | $2,097 | $574 | $1,524 | $347,721 |
| 5 | $2,097 | $576 | $1,521 | $347,145 |
| 6 | $2,097 | $579 | $1,519 | $346,566 |
| 7 | $2,097 | $581 | $1,516 | $345,985 |
| 8 | $2,097 | $584 | $1,514 | $345,401 |
| 9 | $2,097 | $586 | $1,511 | $344,815 |
| 10 | $2,097 | $589 | $1,509 | $344,226 |
| 11 | $2,097 | $591 | $1,506 | $343,635 |
| 12 | $2,097 | $594 | $1,503 | $343,041 |
Payment estimates use standard amortization math with monthly compounding. Actual lender terms may differ.
The problem
The sticker price isn’t what you pay
A $350,000 mortgage at 6.5% over 30 years means roughly $450,000 in total payments — with interest often matching or exceeding principal.
Bank of America, Chase, and other US lenders use monthly compounding. Small rate differences compound into tens of thousands over the loan life.
How Calqio helps
Standard US amortization with visual breakdown
Uses the annuity payment formula with monthly compounding. See payment per period, total interest, principal vs interest share, and a declining balance chart.
Expand the amortization table to see every payment.
Real example
Example: $300,000 at 6.5% over 30 years
Monthly payment is roughly $1,896. Total interest over 30 years exceeds $380,000 — more than the original loan amount.
Bi-weekly payments (if offered by your lender) can shorten the term; use the frequency selector to compare.
Common questions
- How is US mortgage interest calculated?
- Most US fixed-rate mortgages use monthly compounding: periodic rate = annual rate ÷ 12. Payment follows the standard amortization formula.
- Does this work for auto and personal loans?
- Yes — same math applies to any fully amortizing loan with equal periodic payments.
- Are property taxes and insurance included?
- No. This is principal and interest (P&I) only. Escrow for taxes and insurance is separate.
- How does this compare to the Canada calculator?
- Canadian mortgages compound semi-annually by law. At the same nominal rate, US monthly compounding produces a slightly different payment.