The Wisconsin Department of Revenue has released a revised Publication W-166, Wisconsin Employer’s Withholding Tax Guide. Effective for taxable years beginning after December 31, 2008, the top individual rate increased fifteen percent from 6.75% to 7.75%. The withholding tables and alternate methods of withholding have been revised due to the new tax rate and bracket adjustment resulting from inflation. The revised withholding tables or alternate methods should be implemented no later than October 1, 2009. Vision Payroll has implemented the revised withholding tables and Wisconsin taxpayers should have already noticed the change in withholding.