Attention homeowners: Make sure you claim all of your eligible house-related tax deductions on your 2012 tax return. Number one on your list should be the mortgage interest deduction. It is the largest homeowner tax deduction and the third largest deduction overall, reaching nearly $1 billion annually.

Photo: 401(K) 2013/Flickr

Mortgage interest is the biggest homeowner tax deduction
The mortgage interest tax deduction totals nearly $1 billion annually.