Hi,
Change your formula to force a date return:
Expiration: CDate( IIf([FormNum]="IRS 668-A",([HoldDate]+1),IIf([Agency]="State Board of Equalization",([HoldDate]+365),IIf([Agency]="Employment Development Department",([HoldDate]+365),IIf([Agency]="Wisconsin Department of Revenue",([HoldDate]+1),IIf([Agency]="New York State Department of Labor",([HoldDate]+90)))))) )
Regards,
Bill