More research done. Evidently AirBnb collects the 6% portion owed only to the STATE OF TEXAS. We still have to collect and report our city and county taxes.
BREAKDOWN
* 6% State of Texas, of which 0.5% tourism with balance to the general fund
* 7% City of Houston (collected by Houston First Corporation)
* 2% Harris County
* 2% Harris County Houston Sports Authority (collected by Harris County)
This means that I owe him a 6% refund. I will still have to send the 11% balance in to the City of Houston and Harris County. Plus report the AirBnB portion, perhaps, somehow, paid on my behalf to the State by AirBnB by the 20th. (evidently noting that it has been reported as being credited to my host address--hopefully) and that I owe nothing for that portion. If I don't do that, the state will fine $50 for not reporting. That already happened to me earlier this year when I assumed AirBnB had done the state, so I didn't send in a report. Tricky.
-Kijana