---
type: "Bill"
title: "Generally revise laws related to mentally ill individuals"
description: "Generally revise laws related to mentally ill individuals"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 435"
citation: "Montana SB 435 (2025)"
classification: ["bill"]
subjects: ["Civil Procedure", "Health Care Services", "Institutions", "Mental Illness or Incapacity", "Social Services"]
status: "enacted"
primary_sponsors: ["John Esp"]
version_count: 48
action_count: 47
vote_count: 9
first_action: "2024-12-15T16:18:57+00:00"
last_action: "2025-05-16T15:31:39+00:00"
source: "openstates"
source_identifier: "ocd-bill/287243d6-94ca-46d1-a142-c7174ef340cb"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC4008?open_tab=sum"
source_hash: "e1426616f4834084499804218890f35c24d7f58243ef6a7649cff2ec29e0ae5c"
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 SB 435 (2025) — Generally revise laws related to mentally ill individuals

## Version chain

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

1. **LC4008.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286132)
2. **SB0435.001.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299208)
3. **SB0435.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298897)
4. **SB0435.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298896)
5. **SB0435.002.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301871)
6. **SB0435.002.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301870)
7. **SB0435_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287910)
8. **SB0435_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293389)
9. **SB0435_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299589)
10. **SB0435_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299590)
11. **SB0435_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299591)
12. **SB0435_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299592)
13. **SB0435_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286508)
14. **SB0435_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299594)
15. **SB0435_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307919)
16. **SB0435_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307920)
17. **SB0435_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299596)
18. **SB0435_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299597)
19. **SB0435_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299732)
20. **SB0435_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299739)
21. **SB0435_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299740)
22. **SB0435_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299741)
23. **SB0435_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307917)
24. **SB0435_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307918)
25. **SB0435_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299593)
26. **SB0435_3(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307922)
27. **SB0435_3(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313096)
28. **SB0435_3(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307923)
29. **SB0435_3(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307924)
30. **SB0435_3(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307955)
31. **SB0435_3(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307957)
32. **SB0435_3(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307958)
33. **SB0435_3(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307959)
34. **SB0435_3(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309028)
35. **SB0435_3(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313095)
36. **SB0435_3.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307921)
37. **SB0435_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313098)
38. **SB0435_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324994)
39. **SB0435_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327863)
40. **SB0435_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313099)
41. **SB0435_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313707)
42. **SB0435_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313708)
43. **SB0435_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317145)
44. **SB0435_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320708)
45. **SB0435_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323009)
46. **SB0435_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323010)
47. **SB0435_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323011)
48. **SB0435_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313097)

## Votes

- Do Concur — **98–1** (pass) · lower
- Do Pass — **50–0** (pass) · upper
- Do Pass — **50–0** (pass) · upper
- be_concurred_in_as_amended — **13–8** (pass) · lower
- do_pass — **10–1** (pass) · upper
- AMD-SB0435.002.001 Reavis DO PASS — **84–15** (pass) · lower
- Do Concur As Amended — **98–2** (pass) · lower
- Do Pass — **49–1** (pass) · upper
- Do Pass — **49–0** (pass) · upper

## Sponsors

- John Esp — primary (person)

## Timeline

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

- **2024-12-15T16:18:57+00:00** (LC) Drafter Assigned
- **2024-12-15T16:18:57+00:00** (LC) Draft On Hold
- **2025-02-12T21:10:46+00:00** (LC) Draft Taken Off Hold
- **2025-02-19T18:57:13+00:00** (LC) Draft in Legal Review
- **2025-02-20T16:38:59+00:00** (LC) Draft in Edit
- **2025-02-22T19:06:39+00:00** (LC) Draft in Input/Proofing
- **2025-02-22T22:33:37+00:00** (LC) Draft in Final Drafter Review
- **2025-02-23T01:17:15+00:00** (LC) Draft in Assembly
- **2025-02-23T18:57:24+00:00** (LC) Draft Ready for Delivery
- **2025-02-24T16:34:48+00:00** (LC) Draft Delivered to Requester
- **2025-02-24T18:25:50+00:00** (S) Introduced
- **2025-02-24T20:16:12+00:00** (S) First Reading `reading-1`
- **2025-02-25T01:16:22+00:00** (S) Fiscal Note Requested
- **2025-02-25T01:28:28+00:00** (S) Referred to Committee - (S) Public Health, Welfare and Safety `referral-committee`
- **2025-02-25T22:20:56+00:00** (S) Hearing - (S) Public Health, Welfare and Safety
- **2025-03-01T04:17:43+00:00** (S) Committee Executive Action--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
- **2025-03-01T18:27:00+00:00** (S) Committee Report--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
- **2025-03-04T02:06:00+00:00** (S) Fiscal Note Received `receipt`
- **2025-03-04T02:06:06+00:00** (S) Fiscal Note Unsigned
- **2025-03-04T02:06:12+00:00** (S) Fiscal Note Printed
- **2025-03-05T11:33:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-05T23:48:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-06T11:33:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-06T19:35:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-03-06T20:25:41+00:00** (S) Transmitted to House
- **2025-03-07T17:15:41+00:00** (H) Referred to Committee - (H) Human Services `referral-committee`
- **2025-03-17T19:15:00+00:00** (H) First Reading `reading-1`
- **2025-03-19T19:14:22+00:00** (H) Hearing - (H) Human Services
- **2025-03-27T00:22:34+00:00** (H) Committee Executive Action--Bill Concurred as Amended - (H) Human Services
- **2025-03-27T19:23:00+00:00** (H) Committee Report--Bill Concurred as Amended - (H) Human Services
- **2025-04-10T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T15:49:00+00:00** (H) 2nd Reading Motion to Amend Carried `reading-2`
- **2025-04-10T15:58:00+00:00** (H) 2nd Reading Concurred as Amended `reading-2, reading-2`
- **2025-04-11T21:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T23:22:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T01:02:46+00:00** (H) Returned to Senate with Amendments
- **2025-04-16T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-16T20:19:00+00:00** (S) 2nd Reading House Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-17T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-17T19:19:00+00:00** (S) 3rd Reading Passed as Amended by House `passage, passage, reading-3, reading-3`
- **2025-04-18T00:02:28+00:00** (S) Sent to Enrolling
- **2025-04-20T13:14:38+00:00** (S) Returned from Enrolling
- **2025-04-29T20:00:24+00:00** (S) Signed by President `passage`
- **2025-05-05T19:00:51+00:00** (H) Signed by Speaker `passage`
- **2025-05-05T19:55:00+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-13T16:10:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-16T15:31:39+00:00** 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/287243d6-94ca-46d1-a142-c7174ef340cb`. Confidence: reported (aggregated from official Montana legislature records).