Can I deduct expenses for my college teaching? In the past I used a 2106 form.

[HelenaC]

If you're a W-2 employee, no. Under the Tax Cuts and Jobs Act (TCJA) that Congress signed into law on December 22, 2017, Form 2106 Employee Business Expenses, the unreimbursed employee expenses deduction has been suspended in tax years 2018 through 2025. 

• If you’re self-employed or own a business, enter your business-related expenses on Schedule C instead.

If you're preparing a 2017 income tax return, see Where do I enter job-related employee expenses? (Form 2106).

Related information:

• How will tax reform affect my 2018 federal tax return?