This form is used by principals or agents who accept taxable wagers: to register certain information with the IRS, and to pay the occupational tax on wagering. Current Revision Form 11-CPDF Recent Developments IRS approves temporary use of e-signatures for certain forms -- 28-AUG-2020 Other Items You May Find Useful All Revisions for Form 11-C Other Current Products Related Items About Form 730, Monthly Tax Return for Wagers About Form 8849, Claim for Refund of Excise Taxes About Form SS-4, Application for Employer Identification Number (EIN)