If you suspect or know of an individual or business that you believe may be planning to file an incorrect income tax return this filing season, you may report this information to the Department of Revenue. Reportable activity may include concerns about a client's eligibility for the Homestead Credit or Earned Income Credit, or documentation presented by clients that you suspect may be false or incorrect. The department has the ability to flag a taxpayer's account so that any return filed by that taxpayer can be reviewed prior to processing the return.
Audit Bureau, Unit E
Mail Stop 5–144
P.O. Box 8906
Madison, WI 53708–8906
Fax: (608) 221–6637
If you have questions, call 608-266-6639. Practitioners may also call the practitioner phone number that was previously sent by e-mail through the practitioner list serv.
When reporting any type of suspicious activity, please provide as much information as possible to assist us in properly identifying the taxpayer and any potential incorrect returns. Information provided should include full name, social security number, address and a brief explanation of the suspected problem.
Although you are not required to identify yourself, it is helpful if you do so in the event we need to contact you for clarification or additional information. Your identity can be kept confidential. The Wisconsin Department of Revenue does not offer rewards for reporting tax fraud.
Privacy and disclosure laws prohibit the Department of Revenue from sharing information on any action taken based on the information you provide.
Last updated January 2, 2014