Sales tax economic nexus by state.

Fuel Tax Collection Allowance by State

A directory of the states that are origin based sales tax vs destination sales tax.

Request for Third Party Access by State

An index of sales tax contacts for each state and their contact information.

An index of sales tax certified software providers list for each state and their contact information.

Definitions that are generally used by sales & use tax administrators and industry tax payers.

A general overview and history of state sales and use tax, as well as the determination, collection, and filing process that goes along with it.

Sales tax collection allowance by state.

Sales & use tax abbreviations and acronyms that are commonly used by sales & use tax administrators and industry taxpayers.