You can now file an amended Form 940, Employer’s Annual Federal Unemployment (FUTA) Tax Return; Form 941-X, Adjusted Employer’s QUARTERLY Federal Tax Return or Claim for Refund; Form 943-X, Adjusted Employer’s Annual Federal Tax Return for Agricultural Employees or Claim for Refund; and Form 945-X, Adjusted Annual Return of Withheld Income Tax or Claim for Refund; electronically using Modernized e-File (MeF). At this time, MeF cannot be used to file Form 944-X, Adjusted Employer’s ANNUAL Federal Tax Return or Claim for Refund; or Form CT-1 X, Adjusted Employer’s Annual Railroad Retirement Tax Return or Claim for Refund.
