---
type: "Bill"
title: "Revise guarantor exoneration law"
description: "Revise guarantor exoneration law"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2021"
identifier: "HB 566"
citation: "Montana HB 566 (2021)"
classification: ["bill"]
subjects: ["Contracts (see also: Public Contracts)"]
status: "enacted"
primary_sponsors: ["Tom Welch"]
version_count: 3
action_count: 46
vote_count: 6
first_action: "2020-12-13"
last_action: "2021-04-09"
source: "openstates"
source_identifier: "ocd-bill/062c6d91-a406-42f6-ad3a-8504d72cf4b1"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=566&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20211"
source_hash: "ad7c6d58c5521c3448c33e0bb607e8d2023fa6f252e37f10ee6639651ff23d3e"
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 566 (2021) — Revise guarantor exoneration law

## Version chain

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

1. **HB0566_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0566_1.pdf)
2. **HB0566_X.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0566_X.pdf)
3. **Enrolled** (enrolled) — [source](https://leg.mt.gov/bills/2021/billpdf/HB0566.pdf)

## Votes

- Do Pass — **97–3** (pass) · lower
- Do Concur — **49–0** (pass) · upper
- Do Concur — **50–0** (pass) · upper
- Do Pass — **96–3** (pass) · lower
- BE CONCURRED IN — **8–0** (pass) · upper
- DO PASS — **18–2** (pass) · lower

## Sponsors

- Tom Welch — primary (person)

## Timeline

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

- **2020-12-13** Draft Request Received
- **2020-12-20** Draft to Requester for Review
- **2021-01-04** Draft to Requester for Review
- **2021-01-22** Draft to Requester for Review
- **2021-02-17** Draft in Legal Review
- **2021-02-17** Draft in Edit
- **2021-02-19** Draft to Drafter - Edit Review
- **2021-02-19** Draft in Input/Proofing
- **2021-02-20** Draft in Final Drafter Review
- **2021-02-20** Bill Draft Text Available Electronically
- **2021-02-20** Executive Director Review
- **2021-02-22** Draft in Assembly
- **2021-02-22** Draft Ready for Delivery
- **2021-02-22** Executive Director Final Review
- **2021-02-22** Draft Ready for Delivery
- **2021-02-22** Draft Delivered to Requester
- **2021-02-22** Introduced `introduction`
- **2021-02-22** Introduced Bill Text Available Electronically
- **2021-02-23** Referred to Committee - (H) Business and Labor `referral-committee`
- **2021-02-23** First Reading `reading-1`
- **2021-02-24** Hearing - (H) Business and Labor
- **2021-02-26** Committee Executive Action--Bill Passed - (H) Business and Labor `committee-passage`
- **2021-02-26** Committee Report--Bill Passed - (H) Business and Labor `committee-passage`
- **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) Business, Labor, and Economic Affairs `referral-committee`
- **2021-03-17** Hearing - (S) Business, Labor, and Economic Affairs
- **2021-03-18** Committee Executive Action--Bill Concurred - (S) Business, Labor, and Economic Affairs
- **2021-03-18** Committee Report--Bill Concurred - (S) Business, Labor, and Economic Affairs
- **2021-03-22** Scheduled for 2nd Reading
- **2021-03-22** 2nd Reading Concurred `reading-2`
- **2021-03-23** Scheduled for 3rd Reading
- **2021-03-23** 3rd Reading Concurred `passage, reading-3`
- **2021-03-23** Returned to House
- **2021-03-24** Sent to Enrolling
- **2021-03-25** Returned from Enrolling
- **2021-03-25** Printed - Enrolled Version Available
- **2021-03-29** Signed by Speaker
- **2021-03-30** Signed by President
- **2021-03-30** Transmitted to Governor `executive-receipt`
- **2021-04-08** Signed by Governor `executive-signature`
- **2021-04-09** 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/062c6d91-a406-42f6-ad3a-8504d72cf4b1`. Confidence: reported (aggregated from official Montana legislature records).