I started renting my unit on 08/01/2012, but didn't know to claim the depreciation expense until this filing for 2016. Turbo Tax states that I 'may' have taken $##,### of depreciation since beginning to use this asset for business...but I corrected that to be $0 in the previous years. Is that correct? Is there a way that I can take advantage of the Depreciation Expense I could have been taking since 2012? Thank you...
