$300,000 Mortgage at 6%: Payment and Amortization
This U.S.-dollar mathematical scenario starts with a $300,000 home price and no down payment, so the loan principal is also $300,000. It applies a selected 6% nominal annual interest rate over 30 years. Property tax, insurance, mortgage insurance, association dues, maintenance, closing costs, and lender fees are excluded from the headline payment.
Why isn’t 6% charged on the original $300,000 every year?
The estimated monthly principal-and-interest payment is $1,798.65. The first scheduled payment contains $1,500.00 of interest and $298.65 of principal because interest is charged on the outstanding balance, which declines after each payment.
$1,798.65
Mortgage principal and interest monthly repayment.
Editable mathematical scenario
Detailed Breakdown
6% is an annual rate on a declining balance, not a flat yearly charge
The selected 6% nominal annual rate is divided into a 0.5% monthly rate for this calculation. Each month, that rate is applied to the remaining principal. The payment stays level in this fixed-rate example, but its composition changes: interest falls as the balance falls, while the principal share rises.
On the first scheduled payment, interest is $1,500.00, principal repayment is $298.65, and the remaining balance is $299,701.35. The second month's interest is lower at $1,498.51 because it is calculated on that smaller balance.
What changes if you choose 15 years instead of 30?
The comparison holds the $300,000 principal and 6% selected annual rate constant. A shorter term raises the scheduled payment but reduces the number of interest-bearing months. Every result comes from the same amortization function as the editable calculator.
| Rate | Years | Monthly payment | Total interest | Total paid |
|---|---|---|---|---|
| 6% | 15 | $2,531.57 | $155,682.69 | $455,682.69 |
| 6% | 30 | $1,798.65 | $347,514.57 | $647,514.57 |
At 30 years, total scheduled interest is $347,514.57. At 15 years it is $155,682.69. Whether the higher 15-year payment fits is a cash-flow decision, not a claim that one term is universally preferable.
What the estimate includes and excludes
The payment and comparison include only repayment of the stated loan principal and interest under equal end-of-month payments. They exclude property tax, insurance, mortgage insurance, association dues, maintenance, closing costs, discount points, and other lender fees. Add documented costs in the calculator before using the result as a housing budget.
When comparing written offers, hold the loan principal, term, lock period, and points constant. The selected 6% note rate drives this amortization result; APR can differ when fees are included.
Compare this amount with the protected $400,000 mortgage at 6.5% scenario, or inspect the payment sequence in the amortization schedule.
Key Considerations
Enter the down payment and any quoted mortgage-insurance cost for the loan you are considering.
Use the interest rate and fees from a written quote; pricing criteria vary by lender and loan program.
Consider a 15-year term if you want to save massively on total interest.
Add closing costs from a written estimate for your loan and jurisdiction.
Frequently Asked Questions
What is the payment on a $300,000 mortgage at 6% over 30 years?
The estimated principal-and-interest payment is $1,798.65 per month. The selected home price and principal are both $300,000 because the initial down payment is zero.
How much of the first payment is interest?
The first scheduled payment contains $1,500.00 of interest and $298.65 of principal. Later interest is calculated on the declining balance.
How much total interest does the 30-year example produce?
The amortization calculation produces $347,514.57 of scheduled interest if the loan runs for all 360 payments.
Does the result include ownership costs or lender fees?
No. Property tax, insurance, mortgage insurance, association dues, maintenance, closing costs, points, and lender fees are excluded unless entered separately.
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