Corporation EFile Program

Resources for Corporation E-File Program

The Corporation E-file program provides the following:

  1. Electronic filing for the Louisiana corporation income and franchise tax return with the federal income tax return in a single electronic transmission.
  2. Electronic filing for the Louisiana corporation income and franchise tax return alone.
  3. Single point User Authentication by IRS.
  4. Ability to submit schedules and documentation as PDF attachments.
  5. Ability to file a Louisiana corporation income and franchise tax return for any member of a consolidated group.
  6. Ability to file electronically a CIFT-620, including amended return and short period returns.
  7. Option to direct debit if there is a balance due.

Corporation E-file Process

  1. Federal and state tax returns are transmitted through a secure Internet site accessible only to registered users using Extensible Markup Language (XML) technology.
  2. Federal and state returns are either transmitted together in a single submission or in separate submissions.
  3. IRS will forward Louisiana returns to LDR for processing. LDR will return acknowledgements back to IRS, where they can be picked up by transmitters.
  4. Each return acknowledged separately.
  5. Submissions and acknowledgements will be returned in XML format.

Electronic Filing Mandate

  1. Revised Statute 47:1520 authorizes the secretary the discretion to require electronic filing of tax returns or reports by administrative rule. Louisiana Administrative Code (LAC) 61:III.1503 and 1505 were promulgated to require the electronic filing of the corporation income and franchise tax return (Form CIFT-620). Taxpayers are required to file the return electronically for income (franchise) tax periods beginning:
    • 1/1/2018 (1/1/2019) - if their total assets have an absolute value equal to or greater than $500,000.
    • 1/1/2019 (1/1/2020) - if their total assets have an absolute value equal to or greater than $250,000.

Updated February 25, 2025


Filing Dates


News & Announcements

January 29, 2025

Louisiana state income tax filing begins Wednesday, Jan. 29

Louisiana Department of Revenue (LDR) will begin accepting 2024 state individual income tax returns on Wednesday, Jan. 29, 2025.

January 08, 2025

To reduce costs, LDR to cease mailing state sales tax returns to businesses

Louisiana Department of Revenue will cease printing and mailing copies of the Louisiana state sales tax return to businesses registered for sales tax in the state.

December 11, 2024

Tax preparer faces multiple felony fraud charges

A Terrebonne Parish woman faces multiple felony charges for the attempted theft of thousands of dollars in fraudulent state income tax refunds.


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