When we use the term "sales taxes" in a generic sense, we're referring to the taxes that states impose on retail sales. However, there are actually different types of sales taxes. In fact, in many states there are actually several distinct taxes that together comprise the state's sales taxes. For example, in Arizona, there are distinct sales taxes on such businesses as retailers, restaurant operators, contractors, and real estate rental companies.
Getting back to the types of sales taxes — is the distinction of any significance to you? Before we answer this question, let's identify the three general types of sales taxes:
From a legal standpoint, knowing the type of sales tax you are dealing with is important because it determines who can be liable for the tax, who can sue on the tax, or who can make a claim for refund of the tax. The vast majority of states have a consumer sales tax, where the buyer bears the legal burden of the tax and the seller is required to collect and remit the tax to the state.
Few states have the seller privilege tax option. Kentucky, for example, does, but its effectiveness as a marketing tool is limited because advertising the absorption of sales tax by a seller is illegal.
From your perspective as a purchaser, knowing the type of sales tax with
which you're dealing will help you properly handle sales taxes that are not
billed. If you're dealing with a vendor privilege tax, you should never
voluntarily pay a tax that hasn't been billed to you, because the tax is the
seller's responsibility. In contrast, if you're dealing with a consumer excise
or retail transaction tax, you shouldn't ignore any unbilled tax. Unless you
have some written proof that you paid the tax, you can be held personally liable
for the unpaid tax. If the unbilled tax wasn't caused by a seller's oversight
that can be corrected with a new receipt or invoice, you should remit the
tax directly to the state.