Mortgage Payment Calculator
Calculate your monthly mortgage payment (PMT) for any loan. Get accurate principal and interest calculations based on loan amount, interest rate, and loan term.
Loan Details
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Optional: Additional Monthly Costs
These are separate from your loan payment but part of your total housing cost:
$
$
$
Payment Results
Monthly Payment (PMT)
Principal & Interest Only
$1,996
Loan Summary
Loan Amount:
$300,000
Interest Rate:
7.0%
Loan Term:
30 Years
Total Interest Paid:
$418,527
Total Monthly Housing Cost
Principal & Interest:
$1,996
Property Taxes:
$400
Home Insurance:
$150
HOA Fees:
$0
Total Monthly Payment:
$2,546
Understanding Mortgage Payments (PMT)
PMT stands for "payment" and refers to your monthly mortgage payment that covers principal and interest only. This is the core loan payment that goes directly toward paying off your mortgage balance and the interest charged by your lender.
The PMT calculation uses a standard formula that takes into account your loan amount, interest rate, and loan term. Each monthly payment includes both principal (which reduces your loan balance) and interest (which is the cost of borrowing money).
PMT vs Total Housing Payment
It's important to understand that your PMT is just one part of your total monthly housing cost. Your complete housing payment typically includes:
Principal & Interest (PMT): Your actual loan payment that builds equity in your home and pays the lender's interest.
Property Taxes: Annual taxes divided by 12, often collected by your lender through an escrow account.
Home Insurance: Required coverage to protect your investment, also typically handled through escrow.
PMI: Private Mortgage Insurance required if you put down less than 20%, protecting the lender against default.
How Mortgage Payments Are Calculated
Mortgage payments are calculated using a standard amortization formula that ensures your loan is fully paid off over the specified term with equal monthly payments. The formula considers the loan amount, interest rate, and number of payments.
The PMT Formula
The mathematical formula for calculating your monthly payment is: PMT = P × [r(1+r)^n] / [(1+r)^n - 1]
Where: P = Principal loan amount, r = Monthly interest rate (annual rate ÷ 12), n = Total number of payments (years × 12)
Principal vs Interest Over Time
Early in your loan term, most of your payment goes toward interest. As time passes, more of your payment goes toward principal. This is called amortization, and it means you build equity faster toward the end of your loan term.
For example, on a $300,000 loan at 7% for 30 years, your first payment might be $1,800 interest and $200 principal, while your final payment could be $200 interest and $1,800 principal.
How Loan Terms Affect Your Payment
Your loan term significantly impacts both your monthly payment and the total amount you'll pay over the life of the loan. Shorter terms mean higher monthly payments but less total interest paid.
15-Year vs 30-Year Mortgages
A 15-year mortgage typically has a lower interest rate and builds equity faster, but requires higher monthly payments. A 30-year mortgage offers lower monthly payments but costs significantly more in total interest over the loan's lifetime.
For example, a $300,000 loan at 7% would cost about $2,696 per month for 15 years (total interest: $185,341) versus $1,996 per month for 30 years (total interest: $418,527).
Interest Rate Impact
Even small changes in interest rates can significantly affect your monthly payment and total loan cost. A 1% increase in rate on a $300,000 loan adds about $180 to your monthly payment and over $65,000 in total interest over 30 years.
This is why it's important to shop around for the best rate and consider paying points to buy down your rate if you plan to stay in the home long-term.
Frequently Asked Questions
What's included in my monthly mortgage payment (PMT)?
PMT includes only principal and interest. Your total housing payment also includes property taxes, homeowners insurance, and PMI if you put down less than 20%.
How do I calculate my exact monthly payment?
Use the PMT formula: loan amount × [monthly rate × (1+monthly rate)^number of payments] ÷ [(1+monthly rate)^number of payments - 1]. Our calculator does this automatically.
Should I choose a 15-year or 30-year mortgage?
15-year mortgages have higher monthly payments but lower interest rates and less total interest. Choose based on your monthly budget and long-term financial goals.
How much does a 1% interest rate difference matter?
On a $300,000 loan, 1% higher rate adds about $180/month and $65,000+ in total interest over 30 years. Shop around for the best rate.
What's the difference between PMT and total monthly housing cost?
PMT is just principal and interest. Total housing cost adds property taxes, insurance, PMI, and HOA fees. Lenders often collect these through escrow.
How does my credit score affect my payment?
Better credit scores get lower interest rates, reducing your monthly payment. A 100-point credit score improvement can save $50-100+ monthly.
Can I pay extra toward principal to save money?
Yes, extra principal payments reduce your loan balance faster and save interest. Even $100 extra monthly can save tens of thousands over the loan term.
What happens if I refinance my mortgage?
Refinancing replaces your current loan with a new one, potentially at a lower rate or different term. This can reduce your monthly payment or total interest paid.
How do I remove PMI from my payment?
PMI can be removed when you reach 20% equity (80% loan-to-value). This happens automatically at 78% LTV or you can request removal at 80%.
What if I can't afford the calculated payment?
Consider a longer loan term, larger down payment, or lower-priced home. Aim for housing costs under 28% of gross monthly income for comfortable affordability.