Wisconsin Code § 71.78

Confidentiality provisions
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(1) DIVULGING INFORMATION. Except as provided in subs. (1g), (4), (4m), (10), and
(11), no person may divulge or circulate or offer to obtain, divulge, or circulate any information derived from an income, franchise, withholding, fiduciary, partnership, or limited liability
company tax return or tax credit claim, including information
which may be furnished by the department as provided in this
section. This subsection does not prohibit publication by any
newspaper of information lawfully derived from such returns or
claims for purposes of argument or prohibit any public speaker
from referring to such information in any address. This subsection does not prohibit the department from publishing statistics
classified so as not to disclose the identity of particular returns, or
claims or reports and the items thereof. This subsection does not
prohibit employees or agents of the department of revenue from
offering or submitting any return, including joint returns of a
spouse or former spouse, separate returns of a spouse, individual
returns of a spouse or former spouse, and combined individual income tax returns, or from offering or submitting any claim,
schedule, exhibit, writing, or audit report or a copy of, and any information derived from, any of those documents as evidence into
the record of any contested matter involving the department in
proceedings or litigation on state tax matters if, in the department’s judgment, that evidence has reasonable probative value.
(1g) PERMISSIBLE DISCLOSURE BY DEPARTMENT EMPLOYEES.
An employee of the department may, in connection with the employee’s official duties, disclose information derived from a return or claim specified in sub. (1) to the extent that the disclosure
is necessary to obtain information for the enforcement of the tax
laws of this state. The information that may be disclosed under
this subsection shall be strictly limited to, and used solely for the
purposes of, obtaining information necessary for an audit, collection, inspection, or investigation by the employee.
(1m) BROWSING PROHIBITED. (a) No person, except the person who filed the return or claim, may inspect a return or claim,
or any information derived from a return or claim, that is filed under this chapter unless that person does so in performing the duties of his or her position. Violation of this paragraph by a state
employee is grounds for dismissal.
(b) If any person is charged with a violation of par. (a), the
secretary of revenue shall notify each taxpayer whose return or
claim was improperly inspected by that person.
(c) Any person who is notified under par. (b) may bring an action for damages in regard to the inspection.
(2) DISCLOSURE OF NET TAX. The department shall make
available upon suitable forms prepared by the department information setting forth the net Wisconsin income tax or Wisconsin
franchise tax reported as paid or payable in the returns filed by
any individual or corporation, and any amount of delinquent
taxes owed by any such individual or corporation, for any individual year upon request. When making available information setting forth the delinquent taxes owed by an individual or corporation, the information shall include interest, penalties, fees, and
costs, which are unpaid for more than 90 days after all appeal
rights have expired, except that such information may not be provided for any person who has reached an agreement or compromise with the department, or the department of justice, under s.
71.92 and is in compliance with that agreement, regarding the
payment of delinquent taxes, or the name of any person who is
protected by a stay that is in effect under the Federal Bankruptcy
Code. Before the request is granted, the person desiring to obtain
the information shall prove his or her identity and shall be required to sign a statement setting forth the person’s address and
reason for making the request and indicating that the person understands the provisions of this section with respect to the divulgement, publication, or dissemination of information obtained
from returns as provided in sub. (1). The use of a fictitious name
is a violation of this section. Within 24 hours after any information from any such tax return has been so obtained, the depart-

ment shall mail to the person from whose return the information
has been obtained a notification which shall give the name and
address of the person obtaining the information and the reason
assigned for requesting the information. The department shall
collect from the person requesting the information a fee of $4 for
each return.
(3) DISCLOSURE LIMITATION. The information described in
sub. (2) shall not be made available to any nonresident or to any
resident who is making the request for such information for the
use or benefit, directly or indirectly, of a nonresident person or
firm or a foreign corporation except to the extent that similar information in the state of residence of such person or firm or the
state of incorporation of such foreign corporation is made available to residents of Wisconsin or Wisconsin corporations. As
part of the statement required by sub. (2), the department shall require any person desiring to obtain such information to declare
whether the person is a nonresident of the state and whether the
information is desired for the use or benefit of a nonresident person or firm or a foreign corporation. No copy of any return shall
be supplied to any person except as permitted by sub. (4).
(4) PERSONS QUALIFIED TO EXAMINE RETURNS FOR SPECIFIED PURPOSES. Subject to subs. (5) and (6) and to rules of the
department, any returns or claims specified under sub. (1) or any
schedules, exhibits, writings or audit reports pertaining to the returns or claims on file with the department shall be open to examination by only the following persons and the contents thereof
may be divulged or used only as follows:
(a) The secretary of revenue or any officer, agent or employee
of the department.
(b) The attorney general and department of justice employees.
A department of justice employee may, in connection with the
employee’s official duties, disclose information, other than
copies of information, examined under this paragraph to a law enforcement investigator participating in a department of justice investigation of suspected criminal conduct. The information that
may be disclosed under this paragraph shall be strictly limited to,
and used solely for the purposes of, obtaining information necessary for a department of justice investigation.
(c) Members of any legislative committee on organization or
its authorized agents provided the examination is approved by a
majority vote of a quorum of its members and the tax return or
claim information is disclosed only in a meeting closed to the
public. The committee may disclose tax return or claim information to the senate or assembly or to other legislative committees if
the information does not disclose the identity of particular returns, claims or reports and the items thereof. The department of
revenue shall provide assistance to the committees or their authorized agents in order to identify returns and claims deemed necessary by them to accomplish the review and analysis of tax policy.
(d) Public officers of the federal government or other state
governments or the authorized agents of such officers, where
necessary in the administration of the tax laws of such governments, to the extent that such government accords similar rights
of examination or information to officials of this state.
(e) The person who filed or submitted the return or claim, or
to whom the return or claim relates or by the person’s authorized
agent or attorney.
(f) Any person examining a return or claim pursuant to a court
order duly obtained upon a showing to the court that the information contained in the return or claim is relevant to a pending court
action or pursuant to a subpoena signed by a judge of a court of
record ordering the department’s custodian of returns or claims to
produce a return or claim in open court in a court action pending
before the judge.
(g) Employees of this state, to the extent that the department
of revenue deems the examination necessary for the employees to
perform their duties under contracts or agreements between the
department and any other department, division, bureau, board or
commission of this state relating to the administration of tax laws
or child and spousal support enforcement under s. 49.22.
(h) 1. A member of the board of arbitration established under
s. 71.10 (7) or a consultant under joint contract with the states of
Minnesota and Wisconsin for the purpose of determining the reciprocity loss to which either state is entitled.
2. A member of the board of arbitration established under s.
71.10 (7e) or a consultant under joint contract with the states of
Illinois and Wisconsin for the purpose of determining the reciprocity loss to which either state is entitled.
(j) Employees of the legislative fiscal bureau to the extent that
the department of revenue deems the examination necessary for
those employees to perform their duties under contracts or agreements between the department and the bureau relating to the review and analysis of tax policy and the analysis of state revenue
collections.
(k) The spouse or former spouse of the person who filed the
return or claim if the spouse or former spouse may be liable, or
the property of the spouse or former spouse is subject to collection, for the delinquency, or the department has issued an assessment or denial of a claim to the spouse or former spouse regarding the return or claim.
(L) The administrator of the lottery division in the department
for the purpose of withholding lottery winnings under s. 565.30
(5).
(m) The chief executive officer of the Wisconsin Economic
Development Corporation and employees of the corporation to
the extent necessary to administer the tax benefit programs under
ch. 238, including review of tax benefit applications, compliance
with tax benefit certifications, and confirming the amount of tax
benefits used for purposes of revoking tax benefits.
(n) The state public defender and the department of administration for the purpose of collecting payment ordered under s.
48.275 (2), 757.66, 973.06 (1) (e) or 977.076 (1).
(o) A licensing department or the supreme court, if the
supreme court agrees, for the purpose of denial, nonrenewal, discontinuation and revocation of a license based on tax delinquency
under s. 73.0301.
(p) The secretary of revenue and employees of that department for the purpose of calculating the penalty under s. 71.83 (1)
(d).
(q) Employees of the department of corrections involved in
the administration of the sex offender registry under s. 301.45, for
the purpose of verifying information provided by a person required to register as a sex offender.
(r) The secretary of revenue and employees of that department
for the purpose of preparing and maintaining the list of persons
with unpaid tax obligations as described in s. 73.03 (62) so that
the list of such persons is available for public inspection.
(s) The state auditor and the employees of the legislative audit
bureau to the extent necessary for the bureau to carry out its duties under s. 13.94.
(t) For purposes of obtaining the outstanding liability secured
by a tax warrant, any person, or authorized agent of any person,
who provides satisfactory evidence to the department, as determined by the department, that the person has a material interest,
or intends to obtain a material interest, in a property that is subject to a tax warrant filed by the department under s. 71.91 (5).
(u) The department of safety and professional services for the
purpose of reducing an initial credential fee under s. 440.052.

(v) A federal grand jury or grand jury of this state, upon receipt by the department of a grand jury subpoena.
(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.
(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.
(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).
(7) CHARGE FOR COSTS. The department of revenue may
charge for the reasonable cost of divulging information under this
section.
(8) DISTRICT ATTORNEYS. District attorneys may examine
tax and claim information of persons on file with the department
of revenue as follows:
(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:
1. The taxpayer is or may be a party to such proceeding;
2. The treatment of an item reflected in such information is
or may be related to the resolution of an issue in the proceeding or
investigation; or
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.
(b) When the department of revenue allows examination of
information under par. (a):
1. If the department has referred the case to a district attorney, the department may make disclosure on its own motion.
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.
(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.
(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:
1. There is reasonable cause to believe, based on information
believed to be reliable, that a specific criminal act has been
committed;
2. There is reason to believe that such information is probative evidence of a matter in issue related to the commission of the
criminal act; and
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.
(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.
(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.
(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.
(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:
(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.
(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.

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