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SB312 • 2025

changing an individual’s sex on a birth certificate

changing an individual’s sex on a birth certificate

Did Not Pass

The latest official action shows that this bill did not move forward in that session.

Sponsor
Senators Nass, Wanggaard and Quinn, cosponsored by Representatives Brill, Maxey, Goeben, Wichgers, Piwowarczyk, Gustafson, Steffen, Penterman, Duchow, Nedweski, Callahan, Murphy, Dittrich, Allen and Behnke
Last action
2026-03-23
Official status
S - Licensing, Regulatory Reform, State and Federal Affairs
Effective date
Not listed

Plain English Breakdown

Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.

changing an individual’s sex on a birth certificate

changing an individual’s sex on a birth certificate Status: S - Licensing, Regulatory Reform, State and Federal Affairs

What This Bill Does

  • changing an individual’s sex on a birth certificate Status: S - Licensing, Regulatory Reform, State and Federal Affairs

Limits and Unknowns

  • This entry is temporarily using official source text because the generated explanation could not be confirmed against the official bill text during the last sync.

Bill History

  1. 2026-03-23 Sen.

    Failed to pass pursuant to Senate Joint Resolution 1

  2. 2025-09-22 Sen.

    Senate Amendment 1 offered by Senator Nass

  3. 2025-06-04 Sen.

    Introduced by Senators Nass , Wanggaard and Quinn ; cosponsored by Representatives Brill , Maxey , Goeben , Wichgers , Piwowarczyk , Gustafson , Steffen , Penterman , Duchow , Nedweski , Callahan , Murphy , Dittrich , Allen and Behnke

  4. 2025-06-04 Sen.

    Read first time and referred to Committee on Licensing, Regulatory Reform, State and Federal Affairs

Official Summary Text

changing an individual’s sex on a birth certificate
Status: S - Licensing, Regulatory Reform, State and Federal Affairs

Current Bill Text

Read the full stored bill text
Wisconsin Legislature: SB312: Bill Text

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Proposal Text
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SB312: Bill Text

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2025 - 2026 LEGISLATURE
LRB-3299/1
KMS:cdc
2025 SENATE BILL 312
June 4, 2025 - Introduced by Senators
Nass
,
Wanggaard
and
Quinn
, cosponsored by Representatives
Brill
,
Maxey
,
Goeben
,
Wichgers
,
Piwowarczyk
,
Gustafson
,
Steffen
,
Penterman
,
Duchow
,
Nedweski
,
Callahan
,
Murphy
,
Dittrich
,
Allen
and
Behnke
. Referred to Committee on Licensing, Regulatory Reform, State and Federal Affairs.
SB312,1,3
1
An Act

to amend
69.15 (1) (a) and 69.15 (4) (b);
to create
69.01 (1m), 69.115
2
and 69.12 (2m) of the statutes;
relating to:
changing an individual’s sex on a
3
birth certificate.
Analysis by the Legislative Reference Bureau
Current law allows for changes to an individual’s sex on a birth record due to a surgical sex-change procedure or to correct an error on a birth record, subject to certain requirements. Under this bill, an individual’s sex on a birth record may not be changed due to a surgical sex-change procedure. Moreover, the bill prohibits any person from changing an individual’s sex on a birth record to a sex other than the individual’s biological sex. The bill also prohibits a court from ordering a change to an individual’s sex on a birth record to a sex other than the individual’s biological sex. Under the bill, “biological sex” means the biological state of being male or female based on sex chromosomes.
The people of the state of Wisconsin, represented in senate and assembly, do enact as follows:
SB312,1
4
Section

1
.
69.01 (1m) of the statutes is created to read:
SB312,2,2
5
69.01
(1m)
“Biological sex” means the biological state of being female or male
1
based on sex chromosomes, without regard to psychological, chosen, or subjective
2
experience of gender.
SB312,2
3
Section

2
.
69.115 of the statutes is created to read:
SB312,2,5
4
69.115

Biological sex on a birth record.
No person may change the sex of
5
a registrant on a birth record to a sex other than the registrant’s biological sex.
SB312,3
6
Section

3
.
69.12 (2m) of the statutes is created to read:
SB312,2,8
7
69.12
(2m)
A court may not order amendment of the sex of a registrant on a
8
birth record to a sex other than the registrant’s biological sex.
SB312,4
9
Section

4
.
69.15 (1) (a) of the statutes is amended to read:
SB312,2,11
10
69.15
(1)
(a) The order provides for an adoption
,

or
name change
or name
11
change with sex change
or establishes paternity; and
SB312,5
12
Section

5
.
69.15 (4) (b) of the statutes is amended to read:
SB312,2,20
13
69.15
(4)
(b) Any person with a direct and tangible interest in a birth record
14
registered in this state may petition a court to change the name
and sex
of the
15
registrant on the record due to a surgical sex-change procedure. If the state
16
registrar receives an order which provides for such a change the state registrar
17
shall change the name
and sex
on the original record, except that if the court orders
18
the state registrar to prepare a new record the state registrar shall prepare a new
19
record under sub. (6). This subsection does not apply to a name change prohibited
20
under s. 301.47.
SB312,6
21
Section

6
. Initial applicability.
SB312,2,23
22
(
1
)

The treatment of ss. 69.12 (2m) and 69.15 (1) (a) first applies to a court
23
order issued on the effective date of this subsection.
SB312,3,2
24
(
2
)

The treatment of s. 69.15 (4) (b) first applies to a petition filed under s.
1
69.15 (4) (b) on the effective date of this subsection or a court order issued on the
2
effective date of this subsection.
SB312,3,3
3
(end)

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