How PMI Premium Calculations Work
PMI premiums are determined by the private mortgage insurer using proprietary rate cards that factor in the borrower’s representative credit score, the loan-to-value ratio, the required coverage percentage (set by Fannie Mae or Freddie Mac based on LTV), and the loan term. Coverage percentages typically range from 6% at 85% LTV to 35% at 97% LTV, though exact requirements vary by LTV band and are set by the GSE purchasing the loan.
The insurer publishes rate cards that show the annual premium as a percentage of the original loan amount for each credit score and LTV combination. For example, a 740-score borrower at 90% LTV with 25% coverage might pay 0.32% annually, while a 680-score borrower at 95% LTV with 35% coverage might pay 0.95% annually. The lender or borrower obtains quotes from multiple PMI providers to find the most competitive rate, as pricing varies meaningfully between insurers .
Monthly PMI is calculated by multiplying the annual rate by the original loan amount and dividing by 12. Single-premium PMI is a one-time payment calculated using a different rate factor that reflects the present value of the expected premium stream. The single-premium option can be advantageous for borrowers who have the cash available and expect to keep the loan long enough to recoup the upfront cost through lower monthly payments.
How FHA MIP Is Applied and Collected
The upfront MIP of 1.75% is calculated on the base loan amount (before the UFMIP is added) and is typically financed by adding it to the loan. The annual MIP is calculated each month based on the outstanding loan balance and the applicable annual rate. As the balance declines through amortization, the monthly MIP amount decreases slightly each month, though the effect is gradual on a 30-year amortization schedule.
For FHA-to-FHA refinances (streamline refinances), Borrowers who refinance an FHA loan into a new FHA loan within 36 months of the original closing may receive a partial refund of the upfront MIP, with the refund percentage declining each month per HUD Handbook 4000.1's UFMIP refund schedule.. The refund is credited against the new UFMIP, reducing the net upfront cost. This provision is specific to FHA streamline refinances and The UFMIP refund is available exclusively for FHA-to-FHA refinances and follows a declining schedule over 36 months, as specified in HUD Handbook 4000.1. Borrowers refinancing from an FHA loan to a conventional loan are not eligible for any UFMIP refund .
How the VA Funding Fee Is Determined
The VA funding fee is determined by a matrix published by the VA that considers three variables: the type of transaction (purchase, cash-out refinance, or Interest Rate Reduction Refinance Loan), the down payment percentage, and whether the veteran is a first-time or subsequent user of the VA loan benefit. Subsequent use means the veteran has previously used a VA loan that has been paid off or the entitlement has been restored.
The funding fee is calculated as a percentage of the loan amount. For a first-time use purchase with no down payment and a $350,000 loan, the funding fee would be $7,525 (2.15%). If financed, the total loan becomes $357,525. The monthly payment increases by approximately $40-$45 compared to the same loan without the fee, but there is no ongoing monthly mortgage insurance premium, which typically results in a lower total monthly cost compared to FHA MIP or PMI at similar LTV ratios.
Veterans receiving VA disability compensation at any percentage are fully exempt from the funding fee. This exemption represents one of the most significant financial benefits available to disabled veterans and can save thousands of dollars on a single transaction. Veterans who receive a disability rating after closing may be eligible for a retroactive refund of the funding fee .
How to Cancel PMI
Under the Homeowners Protection Act, borrowers have several paths to PMI cancellation. Borrower-requested cancellation requires that the LTV reach 80% based on either the original property value or a current appraisal (if permitted by the servicer and investor). The borrower must be current on payments, have a good payment history, and certify that no subordinate liens exist on the property. Automatic termination occurs when the LTV reaches 78% based on the original amortization schedule (not accelerated payments or appreciation). Final termination occurs at the midpoint of the loan term regardless of LTV.
For cancellation based on appreciation (a new appraisal showing the home value has increased enough to bring LTV below 80%), the requirements are more restrictive. Fannie Mae requires a minimum of two years of seasoning before a new appraisal can be used and requires the LTV to be at or below 75% (not 80%) for loans seasoned between two and five years .
Related topics include homeowners insurance requirements for mortgage approval, dti ratio limits by loan type, front-end vs. back-end dti ratios explained, escrow accounts explained: insurance and tax payments, and strategies for reducing dti before applying for a mortgage.