"This is a very expensive tax swap," said Robert Scott, president of the Public Affairs Research Council.
An analysis PAR did of the previous proposal, 5.88 percent, said it would be up to $650 million short of being revenue neutral.
Scott says the new rate, when combined with local sales taxes, would mean a lot of Louisiana shoppers paying sales taxes around eleven percent.
"That would be the highest in the nation by a good measure," said Scott.
The Jindal administration says the elimination of all income taxes would make up for that. An analysis by the Beacon Hill Institute of Suffolk University says the Jindal plan could create ten thousand new jobs.