Yes, if you work full-time from home, you may be able to include a home office expense related to your work in addition to other related expenses. TurboTax will guided you in entering your employment expenses (if an employee) or business expenses (if self-employed)
Please refer to this IRS link for more information about Business Expenses
If you are self-employed then as long as you are using the room exclusively (100%) for business use, you will be able to claim a home office expense.
If you are an employee -
Qualifying for the home office deduction is hard to do for an employee. In addition to satisfying the ordinary requirements for the home office deduction and you must meet the convenience of the employer test.
Convenience of Employer Test
- Your business use must be for the convenience of your employer, and
- You must not rent any part of your home to your employer and use the rented portion to perform services as an employee for that employer.
If the use of the home office is merely appropriate and helpful, you cannot deduct expenses for the business use of your home.
For any home office to be deductible, you must (1) use a part of your home regularly and exclusively for work, and (2) your home office must be your principal workplace or you must regularly perform administrative or management tasks there. Whether you work at home or are an employee, you will need to satisfy these basic requirements to claim a home office deduction.
The Home Office Deduction is a job-related expense subject to the 2% AGI limitation and is only available as a deduction if you itemize on your tax return.