The Mathematics of PMI: How to Get Rid of It Faster
PMI is the monthly fee for putting less than 20% down. The math is simple: increase equity faster and PMI goes away sooner. Here's how the loan-to-value ratio drives everything.
Check your LTV and PMI drop-off date
Estimate when you'll reach 80% LTV and how extra payments speed it up.
PMI is the cost of a smaller down payment
Private mortgage insurance protects the lender, not you. It typically costs 0.3% to 1.5% of the loan per year, paid monthly until you reach enough equity.
The LTV rule that turns PMI off
The key threshold is 80% loan-to-value (LTV). Once your loan balance is 80% of the home's value, you can request PMI removal. It must drop at 78% under most conventional loans.
Three ways to eliminate PMI faster
- โข Make extra principal payments monthly.
- โข Refinance into a new loan with 20% equity.
- โข Request a new appraisal if your home value rises.
Example: shaving PMI by 18 months
On a $400k home with 10% down, paying $150 extra per month can move your PMI end date up by more than a year. That's real cash flow back in your budget.
Anand Godar
Financial engineer and founder of QuantCurb. Former fintech data scientist building institutional-grade calculators for everyday wealth decisions.
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