ELF: ETIN (Electronic Transmitter Identification Number)

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MFA required for electronic filing

Effective May 3rd, the 2017 version of UltraTax CS requires multi-factor authentication (MFA) to access the electronic filing transmission feature in CS Connect.

Thomson Reuters is committed to proactively evolving our security features to help you protect your firm and your clients' data. For more information about multi-factor authentication, see Multi-factor authentication overview.

An ETIN is an Electronic Transmitter Identification Number. To be a transmitter of electronic files, one must apply with the IRS, stating they are a transmitter and pass IRS compliance testing.

For example, Thomson Reuters is a transmitter; and therefore, would receive an ETIN. As a user of our software, you should not receive an ETIN, because you are not a transmitter of electronically filed returns, but rather an Electronic Return Originator (ERO). Hence, if you received an ETIN, you should contact the IRS at 866-255-0654 and have them update your records.

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