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Rev. date: 11/25/2015

Test Files and Combined Federal and State Filing

Tax Topic 804
First-time electronic filers are encouraged (but not required) to submit a test file. However, a test file is required when applying to participate in the Combined Federal/State Filing Program. The FIRE test system is available at
Through the Combined Federal/State Filing (CF/SF) Program, the Internal Revenue Service, Technical Services Operation (TSO) forwards original and corrected information returns filed electronically to participating states free of charge for approved filers. Separate reporting to those states is not required. The information returns that may be filed under the Combined Federal/State Filing Program are:
A test file, properly coded for the program, must be submitted in order to participate in the Combined Federal/State Filing Program. See FIRE for more information. Although a test file is only required for the first year, it is highly recommended that a test file be sent every year. Combined Federal/State records must be coded using the two-digit codes assigned to the participating states from the table in Publication , Specifications for Electronic Filing of Forms 1097, 1098, 1099, 3921, 3922, 5498, and W-2G. If the Combined Federal/State test file is acceptable, the IRS sends the filer a letter of approval.
Form f4419.pdf, Application for Filing Information Returns Electronically (FIRE), must be filed no later than 45 days before the due date of the information returns. TSO issues a Transmitter Control Code (TCC). The TCC is required on all files and correspondence.
For further information, refer to Publication or call the TSO Customer Service Section toll-free at 866-455-7438 or at 304-579-4827 (not toll-free) if using the Telecommunications Device for the Deaf (TDD). Foreign filers may call 304-263-8700 (not toll-free).