You should probably get your taxes done professionally, this year. You have a problem. When you sell a rental property, you are required to "recapture" (pay tax on) depreciation allowed or allowable. That is, you must adjust the gain (or loss) on the sale as if you had claimed deprecation. You may be able the amend up to three years back to add depreciation (2014 must be amended by 4-15-18)
