UPDATE HISTORY: Version 23.4.0 - 02/21/23 Updated Michigan and Mississippi withholding rates. ___________________________________________________ Version 23.3.0 - 01/01/23 Updated Oregon and No. Dakota withholding rates. ___________________________________________________ Version 23.2.0 - 12/23/22 Updated Maryland withholding rates. ___________________________________________________ Version 23.1.0 - 12/21/22 Added Illinois, Minnesota, Missouri, Rhode Island and Vermont's new tax rates. ___________________________________________________ Version 23.0.0 - 12/20/22 New version for 2023 tax year. New Federal and many State tax rates included.