At $20K/year, I would expect a lot more households to itemize. I'm trying (and failing) to calculate off the top of my head what kind of mortgage you'd have to

At $20K/year, I would expect a lot more households to itemize. I'm trying (and failing) to calculate off the top of my head what kind of mortgage you'd have to have for a similar deduction. But it's gotta be pretty damn big if your interest is $1600/month.