Mortgage Payment on a $300,000 House

Explanation of assumptions

This example uses a $300,000 purchase price, 20% down, a 6.5% interest rate, a 30-year loan term, plus annual property tax and insurance estimates.

Those ownership costs matter because the real monthly housing bill is usually higher than principal and interest alone.

Example breakdown

How this estimate works

A $300,000 home sits at or below the median price in many mid-cost markets, making it a common entry-level benchmark. The calculation applies the standard fixed-rate amortization formula to the loan amount, then adds monthly property tax and insurance estimates to produce the full housing cost — not just the mortgage payment.

At this price point, the difference between 10% and 20% down is worth checking. The 10% path lowers the upfront cash required but typically adds PMI until equity reaches 20%, which increases the monthly total even though the purchase price stays the same.

Planning checks

• Compare the total payment with monthly take-home pay, not just gross income.
• Leave room for maintenance, utilities, moving costs, and repairs.
• Run the same home price with a higher tax or insurance estimate if you are shopping in a costly area.
• Ask whether the payment still works if the rate is higher than the example.

Common mistakes

• Looking only at principal and interest while ignoring taxes, insurance, HOA dues, repairs, and utilities.
• Assuming every $300,000 home has the same monthly cost even when taxes and insurance vary by location.
• Forgetting that less than 20% down may add PMI or other loan-program costs.
• Using the payment estimate without checking whether it fits your take-home pay and emergency fund.

How to use this example

Use the total payment as the starting point, then add utilities, maintenance, and cash needed after closing.

If the total only works in the perfect scenario, test a lower price or higher rate before relying on it.