Monday Map: Percentage of Each State’s Federal Tax Returns Filed Jointly June 24, 2013 This week, our Monday Map details what percentage of federal tax returns are filed jointly within each state. In Florida, 31.16% of federal tax returns are filed jointly, the lowest in the country.Close behind are New York (31.43%) and Mississippi (32.13%). On the the other end of the spectrum are Idaho (47.27%), Utah (46.98%), and West Virginia (43.56%). All maps and other graphics may be published and re-posted with credit to the Tax Foundation. Click on the map to enlarge it. View previous maps here. Stay informed on the tax policies impacting you. Subscribe to get insights from our trusted experts delivered straight to your inbox. Subscribe Share Tweet Share Email Topics Center for State Tax Policy Data Individual Income and Payroll Taxes