The 80/20 Rule for PMI Removal, Explained
The 80/20 rule for PMI has two parts under the Homeowners Protection Act of 1998. At 80% of the original home value you may request cancellation, provided you are current, have a good payment history, and the value has not declined. At 78% of the original value the servicer must terminate PMI automatically if you are current. Both thresholds use the original value or purchase price, whichever was less, and a mid-loan final termination exists as a backstop.
Borrowers talk about the 80/20 rule as if it were one rule. It is two, with different triggers, different paperwork, and different legal force. Understanding both is the difference between requesting cancellation years early and waiting for the servicer to act on its own schedule.
The 80% rule: your right to ask
When your conventional loan balance falls to 80% of the original home value, you earn the right to request PMI cancellation. The key word is request. The servicer does not have to volunteer it, and in practice servicers rarely remind borrowers. Your request must be in writing, and four conditions attach: you are current on the mortgage, your payment history is good (generally no 30-day lates in the prior 12 months), there are no subordinate liens on the property, and you can satisfy the servicer that the property value has not declined below its original value. That last condition is why servicers order or require an appraisal, usually at your expense, typically $300 to $600.
The 78% rule: the servicer's duty
The Homeowners Protection Act of 1998 requires the servicer to terminate PMI automatically when the principal balance reaches 78% of the original value, based on the original amortization schedule, provided you are current on payments. No request is needed and no appraisal is required, because the trigger is the scheduled balance, not the market value. If you are behind when the loan hits the 78% date, termination waits until you become current. There is also a final backstop: PMI must end at the midpoint of the loan term, 15 years into a 30-year mortgage, even if you are delinquent.
Original value, not current value
Both statutory thresholds measure against the original value, defined as the lesser of the purchase price and the appraised value at origination. On a $400,000 purchase with a $380,000 loan, the 80% request line is $320,000 and the 78% automatic line is $312,000, regardless of what the home is worth today. This surprises borrowers in appreciating markets, but it cuts both ways: in a falling market, the thresholds do not move against you either.
Where appreciation fits in
Appreciation opens a side door. While the statute uses original value, servicers generally accept a cancellation request supported by a new appraisal showing current loan-to-value at or below 80%. This is not the statutory 80% right; it is the servicer's own value-based process, and it comes with seasoning requirements, often 12 to 24 months of payments, plus the appraisal cost. In strong markets this side door is the fastest exit, sometimes years ahead of the amortization schedule.
Putting the two rules to work
Think of the rules as a sequence. First, check whether appreciation plus your current balance already puts you at 80% of current value; if so, pursue the appraisal route now. If not, compute your 80% date on the original value and submit the written request the month you cross it, rather than waiting for the servicer. Finally, know your 78% date as the absolute backstop, and make sure you are current when it arrives so the automatic termination actually fires. The calculator at the top of this page computes all three dates from your numbers.
Loans the rules do not cover
The Homeowners Protection Act covers most conventional residential loans but not every loan. FHA, VA, and USDA loans have their own mortgage insurance regimes with no 80% request right. Lender-paid PMI, where the lender covers the insurance in exchange for a higher rate, cannot be cancelled because there is nothing to cancel; the higher rate lasts the life of the loan. Piggyback second mortgages taken instead of PMI are simply second loans with their own payoff schedules. Know which category you are in before you plan.
Worked timeline example
Make the rules concrete with a $400,000 purchase, 10% down, and a $360,000 loan at 6.75% over 30 years. The 80% request line is $320,000 and the 78% automatic line is $312,000. On the original amortization schedule, the balance hits $320,000 around month 62 and $312,000 around month 74, so the do-nothing path pays PMI for just over six years. Now add 5% annual appreciation: after three years the home is worth about $463,000, and the balance is around $345,000, which is 74.5% of current value, so a value-based request at month 36 ends PMI more than two years early. Add $200 monthly extra principal payments instead, and the balance hits $320,000 around month 48. Combine appreciation with extra payments and the exit can come in under three years. The rules are fixed; your speed through them is not.
Common servicer mistakes to watch for
PMI administration is error-prone, and the errors always favor the servicer. Watch for continued billing after the 78% date, which the Homeowners Protection Act requires to end automatically when you are current. Watch for PMI charged after an approved cancellation, which happens when departments do not communicate. Watch for appraisal requirements invented beyond the written policy, such as demanding two appraisals. And watch for the servicer applying your extra principal payments to future regular payments instead of principal, which slows your march to the thresholds. Audit every statement, keep every letter, and dispute errors in writing immediately.
Investor overlays: stricter than the law
The Homeowners Protection Act sets federal minimums, but the investors behind your loan, Fannie Mae, Freddie Mac, or a private portfolio holder, can impose stricter overlays. Common overlays include longer seasoning before value-based requests, lower loan-to-value thresholds for early cancellation, and additional documentation of improvements. Your servicer follows the investor's guidelines layered on the statute, so the federal right to request at 80% is the floor, not the ceiling, of what you must satisfy. Always get the investor-specific requirements in writing; the statute alone will not tell you what your servicer actually demands.
Data current as of October 2026. PMI rules follow the Homeowners Protection Act of 1998 and CFPB guidance; FHA rules follow HUD. Confirm your loan's terms with your servicer.