Mortgage Payment on $300,000 at 6.5% for 30 Years
Published 8 November 2026 · ToolsZio
A $300,000 home is a useful benchmark: it is close to the price many first-time buyers shop at, and the numbers are easy to scale up or down. The question everyone asks first is simple — what will the monthly payment be? The honest answer is that there are two numbers: the principal and interest payment your lender quotes, and the total monthly payment once property tax and home insurance are added. This guide works out both, at a 6.5% fixed rate over 30 years, with and without a 20% down payment.
Everything below is calculated from the standard amortising loan formula, the same formula our free mortgage calculator uses. You will see the monthly rate, the number of payments, the total interest over 30 years, and what actually happens in the first year — because the first year is where most buyers are surprised.
The answer up front
On a $300,000 loan at 6.5% fixed for 30 years, principal and interest come to $1,896.20 a month. Over 360 payments you will pay $382,633.47 in interest, for total principal and interest of $682,633.47. With a 20% down payment of $60,000, the loan falls to $240,000, principal and interest fall to $1,516.96 a month, and total interest falls to $306,106.77.
Add the rest of the real payment and the picture changes. With annual property tax of $3,600 ($300 a month) and annual home insurance of $1,800 ($150 a month), the total monthly payment on the $240,000 loan is $1,516.96 plus $300 plus $150, which is $1,966.96. Because the down payment is 20%, there is no private mortgage insurance (PMI). With less than 20% down, PMI would be added on top.
How the payment is calculated
A fixed-rate mortgage payment comes from one formula. The monthly interest rate is the annual rate divided by 12: 6.5% divided by 12 is 0.5417% a month, or 0.005417 as a decimal. The number of payments is 30 years times 12, which is 360. The payment equals the loan amount times the monthly rate times a factor that spreads the loan evenly over those 360 payments — and the result is the same payment every month for 30 years.
The payment stays fixed, but what it is made of does not. In the first month on a $300,000 loan, interest is $300,000 times 0.5417%, which is $1,625.00, so only $271.20 of the $1,896.20 payment reduces the balance. As the balance slowly falls, the interest portion shrinks and the principal portion grows. That slow start is the most important thing to understand about a 30-year loan.
What happens in the first year
In the first year of a $300,000 loan at 6.5%, you pay $19,401.27 in interest and only $3,353.18 toward principal, leaving a balance of $296,646.82 after 12 payments of $1,896.20. On the $240,000 loan after a 20% down payment, the first year is $15,521.02 of interest and $2,682.54 of principal, leaving a balance of $237,317.46. In both cases, more than 85% of the first year's payments goes to interest.
That is why extra principal payments early in a loan are so powerful: every extra dollar goes straight to the balance, and it stops earning interest for the lender for the rest of the loan. Adding just $100 a month toward principal on a $240,000 loan cuts years off the term and saves thousands in interest. Our mortgage calculator shows the year-by-year schedule so you can see exactly how that trade-off plays out.
What a different rate would do
The interest rate moves the payment more than most buyers expect. On a $300,000 loan over 30 years, a 5.5% rate gives a payment of $1,703.37 a month and total interest of $313,212.12, while a 7.5% rate gives $2,097.64 a month and total interest of $455,151.67. One percentage point, from 6.5% to 7.5%, adds $201.44 a month and $72,518.20 of interest over the life of the loan.
This is why comparing lenders is worth real money, and why a rate lock matters once you have an offer accepted. A difference of even a quarter of a percentage point is worth thousands of dollars over 30 years. Before you commit, run the same loan at two or three rates and look at the total interest, not just the monthly payment — the monthly figures look close together, but the lifetime figures do not.
Would a 15-year loan save money?
Yes — a lot. On a $240,000 loan at 6.5%, a 15-year term gives a payment of $2,090.66 a month, which is $573.70 more than the 30-year payment of $1,516.96. But total interest falls from $306,106.77 to $136,318.38, a saving of $169,788.39, and you own the home outright 15 years sooner.
The trade-off is cash flow: the higher payment leaves less room for emergencies, retirement saving, or a period without income. Many buyers split the difference by taking the 30-year loan and paying extra principal when they can — the flexibility of a lower required payment, with most of the interest saving if they keep the extra payments up. Whichever you choose, decide on the total interest, not on the monthly payment alone.
Worked Example
Take the $300,000 home with a $60,000 down payment (20%), a 6.5% fixed rate and a 30-year term. The loan amount is $300,000 minus $60,000, which is $240,000. The monthly rate is 6.5% divided by 12, or 0.5417%, and there are 360 monthly payments. Applying the amortising loan formula, principal and interest come to $1,516.96 per month. Annual property tax of $3,600 adds $300 per month, and annual home insurance of $1,800 adds $150 per month. Because the down payment is 20%, PMI is $0. The total monthly payment is therefore $1,516.96 plus $300 plus $150, which equals $1,966.96.
Without the down payment, the same calculation on the full $300,000 loan gives principal and interest of $1,896.20 a month. Over 360 payments that is $682,633.47 in total, of which $382,633.47 is interest — more than the amount borrowed. In the first year alone, $19,401.27 goes to interest and only $3,353.18 goes to principal, leaving a balance of $296,646.82. That is the reality of a 30-year loan at 6.5%: the payment is manageable, but the interest is not small.
Try it yourself: enter your own numbers in our free Mortgage Calculator — it runs entirely in your browser and shows the same working step by step.
Frequently Asked Questions
What is the monthly payment on a $300,000 mortgage at 6.5% for 30 years?
Principal and interest come to $1,896.20 a month on a $300,000 loan at 6.5% over 30 years. Over 360 payments you will pay $382,633.47 in interest, for total principal and interest of $682,633.47. Adding property tax and insurance brings the total monthly payment higher — for example, $300 a month of tax and $150 a month of insurance would bring the total to $2,346.20.
What is the payment with 20% down?
With a $300,000 home price, a $60,000 down payment, a 6.5% interest rate and a 30-year term, the loan is $240,000 and principal and interest come to $1,516.96 per month. Adding $300 a month for property tax and $150 a month for home insurance gives a total monthly payment of $1,966.96, with no PMI because the down payment is 20%.
How much interest will I pay in the first year?
On a $300,000 loan at 6.5%, the first year costs $19,401.27 in interest and only $3,353.18 goes to principal, leaving a balance of $296,646.82. On a $240,000 loan after a 20% down payment, the first year is $15,521.02 of interest and $2,682.54 of principal, leaving a balance of $237,317.46. Early payments are mostly interest because the balance is at its largest.
What happens if the rate is 7.5% or 5.5% instead of 6.5%?
On a $300,000 loan over 30 years, a 5.5% rate gives a payment of $1,703.37 a month and total interest of $313,212.12, while a 7.5% rate gives $2,097.64 a month and total interest of $455,151.67. One percentage point, from 6.5% to 7.5%, adds $201.44 a month and $72,518.20 of interest over the life of the loan.
Would a 15-year loan save money?
Yes. On a $240,000 loan at 6.5%, a 15-year term costs $2,090.66 a month — $573.70 more than the 30-year payment of $1,516.96 — but total interest falls from $306,106.77 to $136,318.38, a saving of $169,788.39. The trade-off is cash flow: the higher payment leaves less room for emergencies, so some buyers take the 30-year loan and pay extra principal when they can.