71.78(4m)(4m) Disclosure of certain dates to spouses and former spouses. The department may disclose to the spouse or former spouse of the person who filed a return or claim specified under sub. (1) whether an extension for filing the return or claim was obtained, the extended due date for filing the return or claim and the date on which the return or claim was filed with the department.

71.78(5)(5) Agreement with department. Copies of returns and claims specified in sub. (1) and related schedules, exhibits, writings or audit reports shall not be furnished to the persons listed under sub. (4), except persons under sub. (4) (e), (k), (m), (n), (o), (q), and (v) or under an agreement between the department of revenue and another agency of government.

71.78(6)(6) Restriction on use of information. The use of information obtained under sub. (4) or (5) is restricted to the discharge of duties imposed upon the persons by law or by the duties of their office or by order of a court as provided under sub. (4) (f) or (v).

71.78(7)(7) Charge for costs. The department of revenue may charge for the reasonable cost of divulging information under this section.

71.78(8)(8) District attorneys. District attorneys may examine tax and claim information of persons on file with the department of revenue as follows:

71.78(8)(a)(a) Such information may be examined for use in preparation for any judicial proceeding or any investigation which may result in a judicial proceeding involving any of the taxes or tax credits specified in sub. (1) if:

71.78(8)(a)3.3. The information relates or may relate to a transactional relationship between the taxpayer or credit claimant and a person who is or may be a party to the proceeding which affects or may affect the resolution of an issue in such proceeding or investigation.

71.78(8)(b)2.2. If a district attorney requests examination of tax or tax credit information relating to a person, the request must be in writing, clearly identify the requester and the person to whom the information relates and explain the need for the information. The department may then allow the examination of information so requested and the information may be examined and used solely for the proceeding or investigation for which it was requested.

71.78(8)(c)(c) Such information may be examined for use in preparation for any administrative or judicial proceeding or an investigation which may result in such proceeding pertaining to the enforcement of a specifically designated state criminal statute not involving tax administration to which this state or a governmental subdivision thereof is a party. Such information may be used solely for the proceeding or investigation for which it is requested.

71.78(8)(d)(d) The department may allow an examination of information under par. (c) only if a district attorney petitions a court of record in this state for an order allowing the examination and the court issues an order after finding:

71.78(8)(d)3.3. The information sought to be examined cannot reasonably be obtained from any other source, unless it is determined that, notwithstanding the reasonable availability of the information from another source, the information constitutes the most probative evidence of a matter in issue relating to the commission of such criminal act.

71.78(8)(e)(e) If the department determines that examination of information ordered under par. (d) would identify a confidential informant or seriously impair a civil or criminal tax investigation, the department may deny access and shall certify the reason therefor to the court.

71.78(9)(9) Disclosure of debtor address. The department may supply the address of a debtor to an agency certifying a debt of that debtor under s. 71.93 or to a municipality or county certifying a debt of a debtor under s. 71.935.

71.78(10)(10) Divulging information to requester. The department shall inform each requester of the total amount of taxes withheld under subch. X during any reporting period and reported on a return filed by any city, village, town, county, school district, special purpose district or technical college district; whether that amount was paid by the statutory due date; the amount of any tax, fees, penalties or interest assessed by the department; and the total amount due or assessed under subch. X but unpaid by the filer, except that the department may not divulge tax return information that in the department’s opinion violates the confidentiality of that information with respect to any person other than the units of government and districts specified in this subsection. The department shall provide to the requester a written explanation if it fails to divulge information on grounds of confidentiality. The department shall collect from the person requesting the information a fee of $4 for each return.

71.78(11)(11) Pass-through entity audits. If the department audits a pass-through entity for income or franchise taxes of its pass-through members, including when an election is made under s. 71.21 (6) (a) or 71.365 (4m) (a) to pay tax at the entity level, the department may disclose the following:

71.78(11)(a)(a) To a pass-through member that the pass-through entity is under audit or was audited, if the disclosure is necessary to explain any amounts assessed or refunded to the pass-through member or to obtain information necessary to determine the proper amount of adjustment to make at the pass-through entity level.

71.78(11)(b)(b) To a pass-through entity, the identities of one or more pass-through members who have failed to report pass-through items originating with the entity on their Wisconsin returns, if the disclosure is necessary to explain any amounts assessed or refunded to the pass-through member or to obtain information about a pass-through member’s return in order to determine the proper amount of adjustment to make at the pass-through entity level.