I have rental property with a cost basis of 117,202 and land value of 34,500. On 8/1/17, I converted the rental property back to my primary residence. TurboTax calculates that my depreciation was $1,982. By my calculations, that's 7.9 months of depreciation. I think it should be either 6.5 or 7.5 months of depreciation using the mid-month convention.