---
type: "Bill"
title: "Generally revise laws related to sexual assault"
description: "Generally revise laws related to sexual assault"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2021"
identifier: "HB 520"
citation: "Montana HB 520 (2021)"
classification: ["bill"]
subjects: ["Crimes"]
status: "enacted"
primary_sponsors: ["Marilyn Marler"]
version_count: 4
action_count: 58
vote_count: 6
first_action: "2020-12-12"
last_action: "2021-04-30"
source: "openstates"
source_identifier: "ocd-bill/73c02c16-4a59-49a9-9b9b-99f7e8b43f1c"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=520&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20211"
source_hash: "ce973e2a5825b969f347e5bc59661845d1daf7196e61e837135ff5c05fa5ca79"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana HB 520 (2021) — Generally revise laws related to sexual assault

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB0520_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0520_1.pdf)
2. **HB0520_2.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0520_2.pdf)
3. **HB0520_X.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0520_X.pdf)
4. **Enrolled** (enrolled) — [source](https://leg.mt.gov/bills/2021/billpdf/HB0520.pdf)

## Votes

- Do Concur — **49–1** (pass) · upper
- Do Pass — **75–25** (pass) · lower
- Do Concur — **50–0** (pass) · upper
- BE CONCURRED IN — **11–0** (pass) · upper
- DO PASS AS AMENDED — **10–9** (pass) · lower
- Do Pass — **80–19** (pass) · lower

## Sponsors

- Marilyn Marler — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2020-12-12** Draft Request Received
- **2021-01-13** Draft to Requester for Review
- **2021-01-14** Draft in Legal Review
- **2021-01-15** Draft in Edit
- **2021-01-20** Draft to Drafter - Edit Review
- **2021-01-20** Draft in Input/Proofing
- **2021-01-21** Draft in Final Drafter Review
- **2021-01-21** Bill Draft Text Available Electronically
- **2021-01-21** Executive Director Review
- **2021-01-21** Draft in Assembly
- **2021-01-22** Draft Ready for Delivery
- **2021-01-22** Executive Director Final Review
- **2021-01-22** Draft Ready for Delivery
- **2021-01-28** Draft Back for Redo
- **2021-01-28** Draft in Legal Review
- **2021-01-29** Draft in Edit
- **2021-02-01** Draft to Drafter - Edit Review
- **2021-02-01** Draft in Input/Proofing
- **2021-02-01** Draft in Final Drafter Review
- **2021-02-01** Bill Draft Text Available Electronically
- **2021-02-02** Executive Director Review
- **2021-02-02** Draft in Assembly
- **2021-02-02** Draft Ready for Delivery
- **2021-02-02** Executive Director Final Review
- **2021-02-03** Draft Ready for Delivery
- **2021-02-19** Draft Delivered to Requester
- **2021-02-19** Introduced `introduction`
- **2021-02-19** Referred to Committee - (H) Judiciary `referral-committee`
- **2021-02-19** First Reading `reading-1`
- **2021-02-22** Introduced Bill Text Available Electronically
- **2021-02-22** Amendments Available
- **2021-02-23** Hearing - (H) Judiciary
- **2021-02-23** Committee Executive Action--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2021-02-23** Committee Report--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2021-02-23** Printed - New Version Available
- **2021-03-01** Scheduled for 2nd Reading
- **2021-03-01** 2nd Reading Passed `reading-2`
- **2021-03-02** Scheduled for 3rd Reading
- **2021-03-02** 3rd Reading Passed `passage, reading-3`
- **2021-03-02** Transmitted to Senate
- **2021-03-08** First Reading `reading-1`
- **2021-03-08** Referred to Committee - (S) Judiciary `referral-committee`
- **2021-04-13** Hearing - (S) Judiciary
- **2021-04-13** Committee Executive Action--Bill Concurred - (S) Judiciary
- **2021-04-13** Committee Report--Bill Concurred - (S) Judiciary
- **2021-04-14** Scheduled for 2nd Reading
- **2021-04-15** Scheduled for 2nd Reading
- **2021-04-15** 2nd Reading Concurred `reading-2`
- **2021-04-15** 3rd Reading Concurred `passage, reading-3`
- **2021-04-15** Returned to House
- **2021-04-19** Sent to Enrolling
- **2021-04-21** Returned from Enrolling
- **2021-04-21** Printed - Enrolled Version Available
- **2021-04-23** Signed by Speaker
- **2021-04-23** Signed by President
- **2021-04-23** Transmitted to Governor `executive-receipt`
- **2021-04-30** Signed by Governor `executive-signature`
- **2021-04-30** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/73c02c16-4a59-49a9-9b9b-99f7e8b43f1c`. Confidence: reported (aggregated from official Montana legislature records).