1040-US: Determining the IRS service center

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MFA required for electronic filing

Effective May 3rd, the 2017 version of UltraTax CS requires multi-factor authentication (MFA) to transmit e-files from CS Connect. Find out more.


How does UltraTax CS determine the applicable IRS service center?


UltraTax CS uses the state postal code entered in Screen 1040 to determine the IRS service center for client documents.

Related topic: IRS service center FAQs (1040)

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