If you are an employee then you cannot deduct business-related expenses. This deduction has been eliminated under the new tax law unless you work in one of these specific professions or situations:
They may, however, be deductible on your state return.
If you were in one of the professions listed above, follow the directions below to enter your job-related expenses.
If you were self-employed during 2018, your business-related expenses are deductible on Schedule C. However, you will need TurboTax Self-Employed to do so.
To enter your business-related expenses related to Schedule C, you must first enter your self-employment income. Then, TurboTax will prompt you to enter your expenses.