Lines 20a and 20b

If you rented or leased vehicles, machinery, or equipment, enter on line 20a the business portion of your rental cost. But if you leased a vehicle for a term of 30 days or more, you may have to reduce your deduction by the inclusion amount. See Leasing a Car in chapter 4 of Pub. 463 to figure this amount.

Enter on line 20b amounts paid to rent or lease other property, such as office space in a building.