How PMI works
PMI protects the lender, not the borrower. It is commonly added to conventional loans when a buyer puts down less than 20 percent, and it can materially change the real monthly payment.
Why PMI gets added
When the down payment is smaller, the lender starts with less equity cushion. PMI helps offset some of the added risk to the lender, which is why it often appears on lower-down-payment conventional loans.
For buyers, the main takeaway is simple: smaller down payment can mean faster access to a home, but also a higher monthly payment than principal and interest alone would suggest.
How it affects affordability
PMI raises the monthly housing cost. If a buyer ignores it during planning, the target payment can look more comfortable on paper than it will feel in real life.
When it may be removed
Depending on the loan and lender rules, PMI may eventually come off once the balance reaches a certain percentage of the home value. The exact timing can vary, so buyers should understand the removal path before assuming it will disappear quickly.
Planning tip
If you expect PMI, include it from the beginning whenever you compare price ranges or down payment options. StonePathHome includes a monthly PMI field in the mortgage calculator and supports it in the affordability calculator so buyers can compare scenarios more realistically.