Publication 502 (2021), Medical and Dental Expenses If you can't use the worksheet in the Instructions for Forms 1040 and 1040-SR, use the worksheet in Pub. 535, Business Expenses, to figure your deduction. If you were an eligible TAA recipient, ATAA recipient, RTAA recipient, or PBGC payee, see the Instructions for Form 8885 to figure the amount to enter on the worksheet.