Yeah, that is what I was trying to convey with regards to the interest deduction being capped, not that the deduction just stopped. I think my second point was a bit muddle as I was trying to suggest by the time you are at a very high income level, your deductions are primarily made of other things, because the mortgage interest deductions can only be so large. That's indeed what the underlying data from the IRS shows as you go up in income past $500k a year comparing column 91 (total home mortgage interest deducted by itemized filers) to column 61 (total itemized deductions) in the ridiculously massive table that the the Tax Policy Center summarizes from that starts on page 137: https://www.irs.gov/pub/irs-pdf/p1304.pdf