Eight states have been announced to implement the Streamlined Sales Tax Project, a computer program that will help collect local and state taxes on purchase made over the internet, the Wall Street Journal reported.

The Streamlined Sales Tax project tracks the tax rates of the 18 states and automatically adds that rate to the online bill of purchase.

Currently, the WSJ reported, "there is no uniform law governing the collection of online state sales tax for customers outside the state in which a store operates."

The states that have signed on are Indiana, Iowa, Kansas, Kentucky, Michigan, Minnesota, Nebraska, New Jersey, North Carolina, North Dakota, Oklahoma, South Dakota and West Virginia. Five more -- Arkansas, Ohio, Tennessee, Utah and Wyoming -- are in the process of finalizing the requirements needed to join.

New York and California have not signed on because they aren't yet able to easily standardize their local tax laws for the project, the WSJ reported.