Carl Bialik from the WSJ writes "On Saturday, 18 states will implement the Streamlined Sales Tax Project, which will make it easier to collect local and state sales taxes on purchases made over the Internet while offering amnesty on uncollected taxes. In their longstanding opposition to collect sales tax, many online retailers 'have cited a 1992 Supreme Court ruling that said that it would be too onerous for e-tailers to calculate all the permutations of differing state and local tax rates,' the Wall Street Journal reports. 'One goal of the project was to remove the ruling as a key defense for online merchants.' Is your state involved? '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, while Washington, Texas and Nevada are in earlier stages.'"