# Montana SB 117: Revise government entity limitations on property tax increases

Montana SB 117, Revise government entity limitations on property tax increases, is a 69th Legislature, Regular Session (2025) Senate bill sponsored by Daniel Zolnikov (Republican); status signed, last action 2025-05-13 (Chapter Number Assigned); PRIA reads it as touching household money (as of 2026-10-12).

- Canonical: https://policyrisk.com/state-bill/MT-SB117-2025
- As of: 2026-10-12
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Montana SB 117
- State: Montana
- Session: 69th Legislature, Regular Session (2025)
- Title: Revise government entity limitations on property tax increases
- Status: signed
- Chamber: Senate
- Introduced: 2025-01-09
- Last action: 2025-05-13, Chapter Number Assigned
- Sponsor: Daniel Zolnikov (Republican)
- Cosponsors: 1
- Subjects: State Finance, Taxation, Local Finance, Revenue, Local, Taxation--Property, Revenue, State, Education - School Finance
- Touches household money: yes
- Roll calls: 4 (200 yes, 96 no in all)
- Economic provisions PRIA read: 2

## Summary

No summary available.

## Bill overview: provisions PRIA read

- New 2026 rules for property tax mills: mixed, medium. Beginning January 1, 2026, local governments change how they set property tax mills. They may add the three‑year average CPI‑U to the mill calculation, capped at 4%. Only 25% of class four newly taxable value counts in the base. Certain abated class eight property and approved new or historic proje…
- Local reserve for big taxpayer shocks: mixed, low. Starting January 1, 2026, cities and counties can create a Large Taxpayer Reserve. Each year they must deposit 10% of revenue from newly taxable property in classes other than class four. They can use part of the deposit to cover required payments to the state for assessment technology. Money stays…

## Sponsors and cosponsors

- Sponsor: Daniel Zolnikov (Republican), Senate
- Cosponsor: Katie Zolnikov (Republican), House

## Roll call votes

| Date | Chamber | Motion | Result | Yes | No | Other |
| --- | --- | --- | --- | --- | --- | --- |
| 2025-04-16 | House | Do Concur | pass | 67 | 31 |   |
| 2025-04-15 | House | Do Concur | pass | 56 | 44 |   |
| 2025-03-28 | Senate | Do Pass | pass | 39 | 9 |   |
| 2025-03-27 | Senate | Do Pass | pass | 38 | 12 |   |

## Actions (30)

- 2025-05-13: Chapter Number Assigned (Senate)
- 2025-05-08: Signed by Governor (Senate)
- 2025-04-30: Transmitted to Governor (Senate)
- 2025-04-29: Signed by Speaker (House)
- 2025-04-23: Signed by President (Senate)
- 2025-04-18: Returned from Enrolling (Senate)
- 2025-04-16: Sent to Enrolling (Senate)
- 2025-04-16: 3rd Reading (House)
- 2025-04-15: 2nd Reading (House)
- 2025-04-09: Committee Report (House)
- 2025-04-09: Committee Executive Action (House)
- 2025-04-03: Hearing (House)
- 2025-04-01: Revised Fiscal Note Printed (Senate)
- 2025-03-31: Revised Fiscal Note Signed (Senate)
- 2025-03-31: Revised Fiscal Note Received (Senate)
- 2025-03-29: 1st Reading (House)
- 2025-03-29: Referred to Committee (House)
- 2025-03-28: Transmitted to House (Senate)
- 2025-03-28: 3rd Reading (Senate)
- 2025-03-27: 2nd Reading (Senate)
- 2025-03-21: Committee Report (Senate)
- 2025-03-21: Committee Executive Action (Senate)
- 2025-01-27: Fiscal Note Printed (Senate)
- 2025-01-24: Fiscal Note Signed (Senate)
- 2025-01-24: Fiscal Note Received (Senate)
- 2025-01-16: Fiscal Note Requested (Senate)
- 2025-01-16: Hearing (Senate)
- 2025-01-15: Referred to Committee (Senate)
- 2025-01-10: 1st Reading (Senate)
- 2025-01-09: Introduced (Senate)

## Bill text

- Enrolled, 2025-04-17: [PDF](https://docs.legmt.gov/download-ticket?ticketId=a19273ac-3e78-4354-876e-2ad191f5a410)
- As Amended (Version 2), 2025-03-21: [PDF](https://docs.legmt.gov/download-ticket?ticketId=d41e1794-1e24-4f85-a984-4a9d0a44b204)
- Introduced, 2025-01-09: [PDF](https://docs.legmt.gov/download-ticket?ticketId=c7a315be-99db-461a-b6f6-cfe3f9190e69)

## Related bills

- SB 437: Revise definition of sex in Montana law (signed)
- HB 831: Increase elderly homeowner and renter income tax credit (vetoed)
- HB 628: Revise early literacy targeted intervention laws (vetoed)
- SB 410: Provide for Montana genomic security act (vetoed)
- SB 422: Generally revise laws relating to insurance coverage relating to cancer (vetoed)
- SB 424: Revising the disabled veteran property tax assistance program (vetoed)

## Sources
- [Enrolled (PDF)](https://docs.legmt.gov/download-ticket?ticketId=a19273ac-3e78-4354-876e-2ad191f5a410)
- [As Amended (Version 2) (PDF)](https://docs.legmt.gov/download-ticket?ticketId=d41e1794-1e24-4f85-a984-4a9d0a44b204)
- [Introduced (PDF)](https://docs.legmt.gov/download-ticket?ticketId=c7a315be-99db-461a-b6f6-cfe3f9190e69)

## Related
- [SB 437: Revise definition of sex in Montana law](https://policyrisk.com/state-bill/MT-SB437-2025)
- [HB 831: Increase elderly homeowner and renter income tax credit](https://policyrisk.com/state-bill/MT-HB831-2025)
- [HB 628: Revise early literacy targeted intervention laws](https://policyrisk.com/state-bill/MT-HB628-2025)
- [SB 410: Provide for Montana genomic security act](https://policyrisk.com/state-bill/MT-SB410-2025)
- [SB 422: Generally revise laws relating to insurance coverage relating to cancer](https://policyrisk.com/state-bill/MT-SB422-2025)
- [SB 424: Revising the disabled veteran property tax assistance program](https://policyrisk.com/state-bill/MT-SB424-2025)
- [Montana bills](https://policyrisk.com/states/montana/bills)
- [Montana state hub](https://policyrisk.com/states/montana)
- [All state legislation](https://policyrisk.com/state-bills)

Source: PRIA, https://policyrisk.com/state-bill/MT-SB117-2025 (as of 2026-10-12).