Our purchase date/trade in date for the vans was 8/1/17. On the forms, I can see that the new van is designated as 48% business and the old van is designated as 61% (doesn't make sense, both should be 100%). So we decided to change the date to 1/1/17 and see what happens. Now we get the Special Depreciation allowance screen - but it doesn't ask us how much, just if we want to take it. We click Yes and Continue, and go through the last couple of screens. I checked the forms, and now the new van is designated as 100% and the old van is 8%. It's allowing us to take a 50% deduction ($15K). I don't think Turbotax is calculating this correctly. We have read multiple websites that say we can take the full deduction, and the percentage of business use changing with different dates doesn't make sense.
