A transmitter control code is an identifier that the IRS uses to distinguish different electronic filing companies who submit data to their FIRE (Filing Information Returns Electronically) system.
The common acronym is TCC.
The code is only used when an error has been made in the payer information and a correction must be made. The TCC is required when submitting a correction letter to the IRS per guidelines in Publication 1220.
If you need the transmitter control code, please contact our Customer Care team.