The monthly payment on a $300,000 mortgage ranges from roughly $1,400 to $2,000, depending on your interest rate and loan length
The exact number depends on three things: how much interest the lender charges you (your interest rate), how many years you have to pay it back (your loan term), and whether you put money down upfront. A 30-year loan at 7 percent interest costs about $1,996 per month. The same loan at 5 percent costs about $1,610. A 15-year loan at 7 percent costs about $2,797 per month — higher each month, but you own the house faster and pay far less interest overall.
This payment covers only the loan itself and interest. Your actual monthly housing cost is higher: you also pay property taxes, homeowners insurance, and possibly mortgage insurance if you put down less than 20 percent. Some lenders roll these into a single payment called PITI (principal, interest, taxes, insurance). Others keep them separate. Either way, the total is what matters for your budget.
Key Takeaways
- A $300,000 mortgage at 7 percent interest over 30 years costs about $1,996 per month in principal and interest alone.
- The same loan at 5 percent interest costs about $1,610 per month — a difference of nearly $400 that compounds over decades.
- Your actual monthly housing payment includes property taxes, homeowners insurance, and possibly mortgage insurance on top of the loan payment.
- Choosing a 15-year loan instead of 30 years raises your monthly payment but cuts your total interest cost roughly in half.
- Interest rates change daily, and even a 1 percent difference shifts your payment by $200 to $300 per month.
How interest rate changes shift your payment
Interest rates are the biggest lever on your monthly cost. The rate you receive depends on market conditions the day you lock in, your credit score, how much you put down, and the lender you choose. Rates vary between lenders even on the same day, so shopping around matters.
Here is how a $300,000 loan over 30 years changes as rates move:
| Interest Rate | Monthly Payment (Principal + Interest) | Total Interest Paid Over 30 Years |
|---|---|---|
| 4% | $1,432 | $215,608 |
| 5% | $1,610 | $279,676 |
| 6% | $1,799 | $347,515 |
| 7% | $1,996 | $418,512 |
| 8% | $2,201 | $492,758 |
Notice that the total interest you pay over 30 years can exceed the original loan amount. At 8 percent, you pay nearly $500,000 in interest alone on a $300,000 loan. This is why even a 1 percent difference in rate is worth negotiating — it saves you tens of thousands of dollars.
Why a 15-year loan costs more per month but less overall
Shortening your loan term from 30 years to 15 years raises your monthly payment because you are spreading the same $300,000 across fewer months. But you pay far less interest because the loan is paid off sooner and interest has less time to accumulate.
At 7 percent interest, a 15-year mortgage on $300,000 costs about $2,797 per month — roughly $800 more than the 30-year version. Over the life of the loan, though, you pay only about $203,460 in interest instead of $418,512. You save more than $215,000 by paying higher monthly payments for half the time.
The trade-off is real: that extra $800 per month has to fit in your budget. Most lenders want your total monthly housing payment (including taxes and insurance) to be no more than 28 percent of your gross monthly income. If your income is $6,000 per month, your housing payment should not exceed $1,680 — which rules out a 15-year loan on $300,000 for many buyers.
What happens when you put money down
Your down payment reduces the amount you borrow. If you put down $60,000 on a $300,000 house, you borrow only $240,000. That lower loan amount means a lower monthly payment.
A $240,000 loan at 7 percent over 30 years costs about $1,597 per month instead of $1,996. Putting down 20 percent also removes the requirement for mortgage insurance — an extra monthly fee that protects the lender if you stop paying. Mortgage insurance on a $300,000 loan typically runs $150 to $300 per month depending on your down payment and credit score. Avoiding it saves you thousands over the life of the loan.
If you cannot put down 20 percent, you still can buy, but you will pay mortgage insurance until you reach 20 percent equity in the home. Some loans let you remove it once you hit that threshold; others require you to refinance.
How property taxes and insurance add to your real payment
The $1,996 monthly payment at 7 percent covers only principal and interest. Your actual housing payment is higher because you also owe property taxes and homeowners insurance.
Property taxes vary wildly by location — from less than 0.5 percent of home value per year in some states to over 2 percent in others. On a $300,000 home, that could mean anywhere from $125 to $500 per month. Homeowners insurance typically costs $100 to $200 per month, though it varies by location, home age, and coverage level.
If you put down less than 20 percent, add mortgage insurance: usually $150 to $300 per month. A realistic total monthly payment on a $300,000 mortgage might look like this: $1,996 (principal and interest) + $300 (property taxes) + $150 (insurance) + $200 (mortgage insurance) = $2,646 per month. The actual number depends entirely on where the house is and how much you put down.
How to estimate your own payment
You can calculate your principal and interest payment using an online mortgage calculator — search "mortgage payment calculator" and enter your loan amount, interest rate, and loan term. The result tells you what you owe on the loan itself.
To find your property tax estimate, search your county assessor's website or call the assessor's office directly. They can tell you the annual tax on a property at that address. Divide by 12 to get the monthly amount. For homeowners insurance, call a few insurers and ask for a quote on the specific property.
Add these three numbers together — principal and interest, property taxes, and insurance — and you have a realistic estimate of your monthly housing payment. If you are putting down less than 20 percent, add mortgage insurance too. This total is what you need to budget for.
Frequently Asked Questions
Does the monthly payment change after I lock in my interest rate?
Your principal and interest payment stays the same for the entire loan if you have a fixed-rate mortgage — the most common type. Property taxes and insurance can increase over time, so your total payment may rise, but the loan portion does not change.
What if I want to pay off the mortgage faster?
You can make extra payments toward principal at any time without penalty on most mortgages. Paying an extra $200 or $300 per month cuts years off the loan and saves thousands in interest. Check your loan documents or call your lender to confirm there is no prepayment penalty.
How much house can I afford if I make $60,000 a year?
Most lenders want your housing payment to be no more than 28 percent of your gross monthly income. At $60,000 per year, that is about $1,400 per month. A $300,000 mortgage is likely too much; you might look at homes in the $150,000 to $200,000 range depending on your down payment and interest rate.
Can I get a lower interest rate if I have good credit?
Yes. Lenders offer better rates to borrowers with higher credit scores, larger down payments, and stable income. The difference between a 6 percent and 7 percent rate can be $200 per month on a $300,000 loan. If your credit score is below 700, working to improve it before you explore can save you real money.
What is the difference between a fixed-rate and adjustable-rate mortgage?
A fixed-rate mortgage keeps the same interest rate for the entire loan — your payment never changes. An adjustable-rate mortgage (ARM) starts with a lower rate for a set period (often 5 or 7 years), then adjusts periodically based on market conditions. ARMs can save money upfront but carry risk if rates rise sharply later.