Find out exactly when you can drop PMI from your mortgage.
Months until 80% LTV (request cancellation)
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Balance at 80% LTV
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Months to auto-term (78%)
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Your breakdown
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The two LTV thresholds in the law
The Homeowners Protection Act of 1998 wrote two numbers into federal law, and they are the spine of this calculator. At 80 percent loan-to-value, measured against your original property value, you have the right to request that your servicer cancel private mortgage insurance. At 78 percent, the servicer must terminate it automatically without any request from you, as long as your payments are current. This tool amortizes your current balance forward and tells you the exact month each line is crossed.
The distinction matters because the two events are usually months apart, and the earlier one only happens if you ask. Servicers do not send a friendly reminder at 80 percent. They are happy to keep collecting the premium until automatic termination forces their hand. Knowing the request month and acting on it is the difference between paying for protection you no longer need and stopping it the moment you are entitled to.
Counting down to 80% on a $370,000 balance
The default case starts with a $400,000 original purchase price and a $370,000 balance, paying $2,400 a month in principal and interest at 6.5 percent, with no extra principal. The 80 percent target is $320,000 and the 78 percent target is $312,000. The calculator subtracts each month's principal portion from the balance and watches for those marks.
That twelve-month gap is the window most homeowners give away. At a typical premium it can be $2,000 to $3,000 of avoidable cost on a loan this size. The fix is simple: put month 97 on your calendar now.
How extra principal pulls the date forward
Enter an extra monthly principal amount and the timeline compresses fast. Adding $300 a month to this loan moves the 80 percent request point in by more than a year, because the threshold tracks your balance and nothing speeds a balance down like principal that skips the interest line entirely. If you have idle cash and your mortgage rate is higher than what a savings account pays, accelerating to the 80 percent mark is a clean, guaranteed return equal to the premium you stop paying.
A common error here is assuming a lump-sum recast resets the clock. It usually does not, at least not for cancellation. Servicers measure LTV against the original value and the scheduled balance, so a recast lowers your payment but does not always grant immediate cancellation rights unless the balance itself crosses 80 percent. Read your note, and if you are close, a written request plus an appraisal is the cleaner path.
When an appraisal beats waiting
This calculator assumes a static original value, which is conservative and correct for the legal request right. But if your home has appreciated, you may already hold more than 20 percent equity at current market value, and most servicers will cancel PMI on a borrower-paid appraisal that proves it. On a property bought at $400,000 that is now worth $460,000, a $370,000 balance is already comfortably under 80 percent of today's value. Spending a few hundred dollars on an appraisal can end years of premiums.
One judgment call from experience: ask your servicer for its specific cancellation requirements in writing before ordering the appraisal. Some require a seasoning period of two years, some want the appraisal from their own approved panel, and ordering the wrong type wastes the fee. Get the checklist first, then order once.
What if I made substantial home improvements?
For loans seasoned two to five years, federal rules let some servicers use a 75 percent threshold instead of 80 percent if you can document value-adding improvements. A renovated kitchen or added bathroom, supported by a current appraisal, can qualify you sooner than amortization alone would. This tool models the standard schedule, so treat its result as the worst case and check whether improvements move you up.
Does refinancing remove PMI immediately?
It can. If a new appraisal at refinance puts your loan at or below 80 percent of current value, the new conventional loan carries no PMI from day one. That said, weigh the closing costs and any rate change against the premiums you would otherwise pay until the 80 percent month shown above. If you are only a year from the request point, a written cancellation request is almost always cheaper than a full refinance.