@Manuel297 Airbnb will automatically collect and remit taxes in Texas. See this link:
https://www.airbnb.com/help/article/653/in-what-areas-is-occupancy-tax-collection-and-remittance-by-...
You should contact the appropriate authority in San Antonio to see if they require additional taxes on top of what the state requires.
You can see how the guests are charged for the Texas taxes by going to your calendar and selecting a range of dates that are available.
In the box next to the calendar, scroll down to the link that says "What do guests pay?" There you will see exactly what a guest sees on their check out page.
Also, you will be able to see what amounts Airbnb has collected for Occupancy taxes in the Gross Earnings section of your Transaction History.
Hope this helps!
Clare