As an owner of a S-Corp, if you work for the S-Corp, you are considered an employee of the S-Corp.
Employees cannot deduct home office expenses as job-related costs.
The best solution is for the S-Corp to reimburse you for your home office expenses through an accountable plan. This is an internal document created and signed by a company officer that agrees to reimburse you, as an employee, for expenses you incur for the company, like your home office. Here is a link to more information about accountable plans.
You will need Turbo Tax Business to complete your S-Corp return. Here is a link to purchase it. Make sure to finish your S-Corp return before completing your personal return, because you need to include the information from your S-Corp K-1 in your personal return.
