Investors & landlords

Yes, I have reported my improvements in the years prior.  I did take depreciation for those items.  It sounds like if I've already reported the improvements in prior years, then I do not need to report them at the sale.  What about those depreciations that were reported prior but are depreciated over a period of years.  Does TurboTax resolve the difference of years that have not been able to depreciate?  Thanks