 In the spring of 2006 the Iowa legislature encouraged the two remaining counties to join the other 97 counties which had enacted this tax by offering an incentive provided the tax was enacted by July 1, 2008, allowing the districts to keep 100% of the money generated for the first half of the time it is collected instead of pooling it statewide.A vote was scheduled in both counties for February 13, 2007 where it was approved, 58% to 42% in Linn County and 67% to 33% in Johnson County.The tax for both counties went into effect on July 1, 2007 for a period of 10 years, making it a statewide tax.