How to deduct home office? I work for a large co but do all my administration work from home and store my supplies here. Turbotax won't allow the deduction.

That is correct.  If you are a W-2 employee then your job-related expenses--including home office -- are no longer deductible on your federal return.  Sorry.

https://ttlc.intuit.com/questions/4482873-which-federal-tax-deductions-have-been-suspended-by-tax-re...