Use Chatbot Tax professionals, get help with our new chat feature. Get answers to your questions about transmitter control codes and filing information returns electronically. For account-specific questions, you’ll need an IRS (ID.me) account. Apply for a TCC to e-file with the IRIS. You can apply for an IRIS TCC for: Your business only (issuer) Your business and others (transmitter) Software developer Your TCC can only be used for IRIS. Each person you list as an authorized user must have an account. Access IRIS application for TCC Before applying, please review the tutorial PDF, which provides step-by-step instructions for applying for an IRIS TCC. After you apply Once you get your TCC, you can e-file Forms 1099 with IRIS.