Oh yeah. One other thing. It may or may not apply to you. You may need to check your county/city laws, ordinances and requirements. If you were doing your AirB&B stuff in my county, while the IRS would still see you as a SCH E business, my county defines a short term rental as any real estate leased for less than 31 days under contract, for any one period starting in the tax year. So if you rented the room out for 15 days to one person in 2018, and the remaining 340 days of the year to another person, my county considers that a short term rental for the "entire" year. My county assesses a $3 per night "bed tax" per occupant, for each night the property is leased. So I would have to pay my county $3 per occupant for every night the room was occupied, even though I rented it for less than 31 days for only one period during the tax year. They don't care if I'm reporting this to the IRS on SCH E or SCH C.
