Mortgage Calculator

How to Calculate Your True Monthly Mortgage Payment

Buying a home is one of the largest financial decisions most people will ever make. While it is easy to look at a home's list price and assume that is your only cost, the reality of homeownership involves several bundled expenses. Our advanced Mortgage Calculator provides a highly accurate estimate of your true monthly payment by factoring in Principal, Interest, Property Taxes, Homeowners Insurance, and PMI.

Understanding PITI: The Components of Your Payment

When a lender calculates your debt-to-income (DTI) ratio, they don't just look at the loan repayment; they look at your entire monthly housing cost, commonly referred to as PITI.

• Principal & Interest (P&I):This is the core of your mortgage payment. The Principal goes directly toward paying down the money you borrowed, while the Interest is the cost charged by the lender for borrowing that money. In the early years of a mortgage, the vast majority of your P&I payment goes toward interest.
• Property Taxes (T): Local governments levy property taxes based on the assessed value of your home. These are typically paid through an escrow account managed by your lender, dividing the annual tax bill into 12 monthly installments.
• Homeowners Insurance (I): Lenders require you to carry insurance to protect their investment (and yours) against fire, theft, and natural disasters. Like taxes, this is usually paid via an escrow account.

What is PMI (Private Mortgage Insurance)?

If your down payment is less than 20% of the home's purchase price, lenders consider the loan higher risk. To protect themselves, they require you to pay Private Mortgage Insurance (PMI). PMI typically costs between 0.5% and 1% of the entire loan amount annually, added to your monthly payment. Once your loan-to-value (LTV) ratio reaches 80% (meaning you have 20% equity in the home), you can legally request to have PMI removed, which will lower your monthly payment.

How Your Interest Rate Affects Affordability

Even a fraction of a percentage point in your interest rate can mean tens of thousands of dollars over the life of a 30-year loan. For example, on a $300,000 loan, the difference between a 6.5% and a 7.5% interest rate is over $60,000 in total interest paid. This is why it is critical to shop around with multiple lenders and maintain a high credit score before locking in a mortgage rate. Use our calculator above to test different down payment and interest rate scenarios to find out exactly how much house you can afford.