What is sales tax in HTX?

Could you please clarify what you mean by "HTX" in the context of sales tax? Assuming you're referring to a specific region or jurisdiction, sales tax is generally a type of tax imposed on the sale of goods and services within a particular area. In most jurisdictions, the seller is responsible for collecting the sales tax from the buyer and remitting it to the government. The exact rate of sales tax can vary depending on the location and the type of goods or services being sold. If you're asking about sales tax specifically in a place called "HTX," it would be helpful to know more about this location to provide an accurate answer. Could you please elaborate on the context or provide additional information?