So you mean to tell me that if I were to pay off my parents house I would have to pay taxes on that?
No, you would NOT have to pay taxes on paying off your parents house. Please re-read the above post #8 in this thread. You will however need to file IRS form 709 for whatever tax year you pay off your parents house. I will say that estate laws are different for every state and I will keep the examples at the Federal tax level.
I'll give you an example that may fit your situation. Let's say you make a gift of $125,000 to your parents this year to pay off their house. You will have to file IRS form 709 before April 15th of 2019. The first $15,000 is covered under the annual exclusion amount, leaving $110,000 remaining as a taxable gift. NO TAX WILL BE DUE, though, because that $110,000 will count against the $11.2 million lifetime EXCLUSION FROM TAXES amount. At your death, that $110,000 will be added to the value of your taxable estate, and if your taxable estate is above the then-applicable LIFETIME EXCLUSION FROM TAXES AMOUNT of $11.2 million, then you could have estate tax liability. So, let's say upon your death at 102 years old, that your estate is worth exactly $11,200,000. Then that one time gift of paying off your parents home will be added to your gross estate and estate taxes will be owed, but not as much as you envision.
Your gross estate at death value is $11,200,000
Plus the remaining taxable gift of $110,000
Total gross estate at death value is $11,310,000
Minus the lifetime exclusion of $11,200,000
Taxable amount at death is $110,000
Tax rate of 40%
Total taxes due on the estate after death is $44,000
Now let me give you another example: Let's say upon your death at 102 years old, your gross estate is worth $8 million. Now let's do the calculation.
Your gross estate at death value is $8,000,000
Plus the remaining taxable gift of $110,000
Total gross estate at death value is $8,110,000
Minus the lifetime exclusion of $11,200,000
The taxable amount is $0 because you still have $3,090,000 of tax free exclusion remaining.
This gets even better if you are married. The taxable exclusion is $11,200,000 for EACH spouse, and upon one of your deaths, the exclusion amount will be transferred to the other spouse. So let's say you die first. You die at 102 years old and your wife or whatever gender you are married to is still alive. Your lifetime exclusion is transferred to your spouse for a total lifetime exclusion of $22.4 million. That is $22,4 million that are not subject to any taxes whatsoever at the Federal level.