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About Form 3949-A, Information Referral
Information about Form 3949-A, Information Referral, including recent updates, related forms and instructions on how to file. Use Form 3949-A, Information Referral to report alleged tax law violations by an individual, a business or both.
Forms and Instructions
Individuals, Businesses
Corrected mailing addresses for Form 2678
The mailing address for Form 2678 were not correct in the 2023 Instructions for Form 2678.
Forms and Instructions
Businesses