FreeCalculators

Private Mortgage Insurance Calculator

Easily calculate your PMI costs and find out when you can eliminate it with our user-friendly PMI calculator.

Loans & Mortgage · Reviewed by FreeCalculators Editorial · Updated 2026-09-01

How it works

The Private Mortgage Insurance (PMI) Calculator is designed to help homeowners understand the costs associated with PMI, which is often required when a down payment is less than 20% of the home's value. PMI serves as a safeguard for lenders in case a borrower defaults on their mortgage. The calculator computes both your monthly and annual PMI costs based on key inputs such as the home's value, the down payment percentage, the PMI rate, and the expected annual appreciation of the property. For example, let’s say you are looking to buy a home valued at $350,000 and plan to make a 10% down payment. This means your loan amount would be $315,000 ($350,000 minus $35,000). If the PMI rate is set at 0.5%, the calculator will determine your monthly PMI cost using the formula: (Loan Amount x PMI Rate) / 12. In this case, it would be ($315,000 x 0.005) / 12, resulting in a monthly PMI payment of $131.25. The primary output of the calculator not only gives you the monthly PMI cost but also estimates how long it will take to reach an 80% loan-to-value (LTV) ratio, at which point you can request to have PMI removed. Additionally, it highlights the 78% LTV threshold, which is the point at which PMI must be removed by law. A common mistake users make is underestimating the impact of home appreciation on PMI duration. If your home appreciates faster than expected, you could reach the required LTV ratio sooner than calculated, allowing you to eliminate PMI earlier than you might think. Thus, staying informed about your home’s market value can significantly affect your PMI costs.

Tips

  • Consider making a larger down payment to avoid PMI altogether.
  • Regularly check your home’s value to see if you can eliminate PMI sooner.
  • Keep track of your loan balance and LTV ratio to know when to request PMI cancellation.
  • Review your PMI rate annually; it may be reduced if your credit score improves.

Frequently asked questions

What is PMI?
PMI, or Private Mortgage Insurance, is insurance that protects lenders if a borrower defaults on a loan, typically required when the down payment is less than 20%.
How is PMI calculated?
PMI is calculated based on the loan amount and the PMI rate. For example, a $315,000 loan at a 0.5% PMI rate results in a monthly cost of $131.25.
When can I remove PMI?
You can request PMI removal once your loan balance reaches 80% LTV. By law, PMI must be removed when your LTV reaches 78%.
Does PMI affect my mortgage payment?
Yes, PMI adds to your monthly mortgage payment. For example, a monthly PMI cost of $131.25 would increase your total payment by that amount.