The efileforbusiness.tenenz.com SaaS application electronically files W-2 and 1099 Federal copies to the IRS and SSA, and efiles certain 1099 form types to states that participate in the combined Federal/State Filing Program (CFSFP). efileforbusiness.tenenz.com also mails a copy to the W-2 and 1099 recipients and retains a PDF copy for the preparer.