What *EXACTLY* are you depreciating? Also, please cite the specific and explicit IRS publication (page, paraghraph, table or whatever) that you are using to depreciate the asset.
TurboTax be default, uses "standard" tables and formulas. But the program does allow for use of non-standard tables and formulas in the tax law, without negating your ability to e-file. So long as the method being used is covered and allowed by the IRS, there's a way to do it in the program.
Also need to know why you are asking this now, instead of 10 years ago. Maybe 2019 is your first year using TurboTax? If so, then obviously you need to continue as you have been, and you "MUST" set it up correctly in TurboTax in your first year of using the program. Otherwise, you're wasting time and money.
