Yes, you may deduct the supplies if exclusively used for your consulting business.
You may be able to claim the home office
deduction if your office is used regularly and exclusively for your business and is
your principal place of business. In
addition, if you received the wage income by working from home for an employer,
your home office must be for the convenience of your employer –
not just you.
This
means if your employer lets you telecommute as an option, you can't take the
deduction. However, if your employer doesn't have their own office or
workplace, forcing you to work from home, you may be able to claim the
deduction.
TurboTax
will help you determine if you can claim the deduction and how much the
deduction is worth when entering your information.
The home office deduction lets you deduct things like
mortgage interest, insurance, utilities, repairs, and depreciation for the
portion of your home used for business. It's available to homeowners and
renters alike.
See
the FAQ answer below on where to enter you home office business expense.
https://ttlc.intuit.com/replies/4773249