How do I determine what % of business is conducted from our home office, When we are a drywall contracting business? The reason I am confused if because, 100% of my "job" of Managing, and running th

In order to claim your home office deduction on your tax return, the home office needs to be exclusively used 100% of the time for business. Most people who claim the home office deduction use the office 100% for business which is run, managed and operated from the home office. Hope this helps.