Mortgage Payment: What's Actually in That Monthly Bill
Published 2026 · 3 min read
Your monthly mortgage payment is rarely just the loan. It's PITI — Principal, Interest, Taxes and Insurance. Understanding the split explains why your "payment" is higher than the loan math alone.
The four parts
- Principal: pays down what you borrowed.
- Interest: the cost of borrowing — biggest early, shrinking over time.
- Property tax: a percentage of home value, held in escrow and paid yearly.
- Home insurance: also escrowed, protecting against damage.
Why escrow exists
Lenders collect a slice of taxes and insurance each month and pay the bills for you. That smooths large yearly bills into your monthly payment — and why "the payment" is more than principal + interest.
How the interest split changes
Early payments are mostly interest; late payments are mostly principal. On a 30-year mortgage, you'll pay more interest in the first decade than in the last two combined.
Run the numbers
Use the mortgage calculator — enter price, down payment, rate, tax and insurance to see your full PITI payment broken into its parts.
The practical takeaway: the payment you see quoted online is often principal and interest only, while the payment you actually send includes tax and insurance through escrow. When a lender pre-approves you, ask for the full PITI number - the one with taxes and insurance - because that is the bill you will pay every month, and the difference between the two figures is where buyers get unpleasantly surprised.