Finally! It's just too bad my insurance score is still too low for me to get the required homeowner's insurance because the car company shared my driving data with insurance data brokers, and they don't like that I park in front of bars every Friday night, they don't know it's because I have a third job as a busboy. It's ok though, cause at least I'm still free to tip my landlord, and employment rates are up!
But remember. You're paying his mortgage and you can't deduct that from your taxes but he can deduct his mortgage from his taxes (the same mortgage that you paid)
Ah yes, the actual mortgage value... the principal is definitely covered in the deduction of the interest... The interest definitely isn't literal income for the bank and they definitely don't pay taxes on income that they make.
Edit: Also there's caps on that value anyway...
However, there are mortgage deductions limits to be aware of:
Loans taken out after December 15, 2017 – limit of $750,000 ($375,000 for married couples filing separately)
Loans taken out on or before December 15, 2017 – $1 million ($500,000 for married couples filing separately)
With the prices of homes now... It's entirely possible you're completely fucked and paying on that interest anyway.