I'm an independent contractor and work both in an office building and from home. Which location do I use for county of employment in Indiana?

The county where you worked (county of principal employment) is the county where your main place of business was located or where your main work activity was performed on Jan. 1, 2017. If you began working in another county after Jan. 1, 2017, the county where you worked for reporting purposes will not change until next year.