How Monthly BPMI Is Calculated and Applied
The monthly BPMI premium is calculated as a percentage of the original loan amount on an annual basis, then divided by 12 for the monthly charge. The rate is determined at origination based on the borrower's credit score, LTV, coverage level, and other risk factors. Once set, the monthly PMI amount typically remains fixed (it does not adjust as the loan balance decreases) until PMI is cancelled.
Example: A borrower takes a $380,000 loan at 95% LTV with a 720 credit score. The mortgage insurance company quotes an annual rate of 0.58%. Annual PMI cost: $380,000 x 0.0058 = $2,204. Monthly PMI: $2,204 / 12 = $184. This $184 is added to the monthly PITI payment. On the amortization schedule, the loan balance reaches 78% of the original value ($304,000) approximately 9.5 years into a 30-year term at 6.50%, at which point PMI terminates automatically. The total PMI paid if the borrower waits for automatic termination: approximately $184 x 114 months = $20,976 .
How Single-Premium PMI Compares to Monthly BPMI
To determine whether single-premium or monthly BPMI is more cost-effective, the borrower should calculate the break-even point. If the single premium is $7,600 and the monthly BPMI is $184, the break-even is $7,600 / $184 = 41 months (approximately 3.4 years). If the borrower keeps the loan with PMI for longer than 41 months, the single premium saves money. If the borrower refinances, sells, or reaches the cancellation threshold before 41 months, the monthly option would have been cheaper.
Single-premium PMI also has a secondary benefit: because there is no monthly PMI charge, the lender qualifies the borrower with a lower total housing payment, potentially allowing the borrower to qualify for a slightly larger loan. However, the upfront cost reduces the borrower's available cash for down payment and closing costs, which may have its own qualification implications.
How the Homeowners Protection Act Cancellation Process Works
When the borrower believes they have reached 80% LTV based on the original value, they submit a written request to the loan servicer for PMI cancellation. The servicer verifies: (1) The current loan balance is at or below 80% of the original value. (2) Under the Homeowners Protection Act, borrower-requested PMI cancellation requires no payments 30 or more days past due in the preceding 12 months, while automatic termination requires no payments 60 or more days past due in the preceding 12 months; individual servicers may apply additional payment history standards beyond these federal minimums.. (3) There are no junior liens on the property. (4) The property value has not declined below the original value, which the servicer may verify by ordering an appraisal or broker price opinion at the borrower's expense .
If all conditions are met, the servicer cancels the PMI and removes the charge from the monthly payment, effective as of the date the request conditions were satisfied. The borrower should confirm cancellation in writing and verify that the next monthly statement reflects the reduced payment.
For automatic termination at 78% LTV, no borrower action is required. The servicer must terminate PMI on the date the loan balance is scheduled to reach 78% of the original value based on the original amortization schedule. If the borrower has made extra principal payments, the actual balance may reach 78% sooner, but the automatic termination is based on the scheduled balance, not the actual balance. Borrowers who make extra payments should proactively request cancellation at 80% actual LTV rather than waiting for the scheduled 78% automatic termination.
How LPMI Compares Over Time
LPMI eliminates the separate monthly PMI charge by embedding the cost in a higher interest rate. To compare LPMI to BPMI, the borrower must calculate the cost of the rate increase over the expected holding period and compare it to the BPMI cost over the same period, accounting for the fact that BPMI can be cancelled while the LPMI rate is permanent (absent a refinance). This comparison is especially important in high-cost markets like California and New York, where larger loan balances amplify the dollar impact of each pricing option.
Example: BPMI option is 6.375% rate + $175/month PMI. LPMI option is 6.75% rate + $0 PMI. On a $400,000 loan, the P&I difference is approximately $96/month ($2,528 vs. $2,432 at the lower rate). With BPMI, the total payment is $2,432 + $175 = $2,607. With LPMI, the payment is $2,528. The LPMI saves $79/month initially. However, once PMI is cancelled (at approximately year 8), the BPMI option drops to $2,432 while the LPMI option remains at $2,528. From that point forward, BPMI saves $96/month. The break-even depends on when PMI is cancelled and how long the borrower keeps the loan.
Related topics include origination fees and lender charges explained, appraisal costs and the appraisal process, annual percentage rate (apr) vs. interest rate, principal, interest, taxes & insurance (piti) explained, and loan offers: total cost analysis.