HB 337 Montana House · 2025 Regular Session

Revise income tax laws to lower income taxes

HB 337 revises Montana's income tax laws, affecting individual taxpayers and certain estates or trusts. The bill aims to lower income taxes by adjusting the state's tax brackets. It increases the amount of Montana taxable income taxed at lower rates and reduces the highest income tax rate. Additionally, the bill revises the tax rates and income thresholds applied to net long-term capital gains.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Apr 2025
House Passage
Apr 2025
Senate Passage
Apr 2025
Signed into Law
Apr 2025
Introduced Jan 29, 2025 Signed Apr 28, 2025
Maddy AI version diff · 11 comparisons

What changed between versions

HB0337_3(3).pdf HB0337_X(10).pdf · 6 edits
MODERATE
The bill revises Montana's income tax brackets and rates to lower taxes for most taxpayers. It increases the income thresholds for the lowest tax bracket and reduces the highest income tax rate from 5.9% to 5.65%. Additionally, it adjusts the tax rates and thresholds specifically for net long-term capital gains.
Scope change
The bill applies to all Montana taxpayers subject to income tax, including individuals, married couples, heads of household, and estates.
REQUIREMENT

Income tax brackets for married couples filing jointly were expanded, raising the threshold for the lowest tax bracket from $41,000 to $95,000.

Income tax brackets for heads of household were expanded, raising the threshold for the lowest tax bracket from $30,750 to $71,250.

Income tax brackets for single individuals were expanded, raising the threshold for the lowest tax bracket from $20,500 to $47,500.

The highest income tax rate was reduced from 5.9% to 5.65% for all filing statuses.

Tax rates for net long-term capital gains were lowered, with the top rate reduced from 4.1% to 3.0% for most taxpayers and 4.1% for married individuals filing separately.

The income thresholds for net long-term capital gains tax brackets were increased across all filing statuses.

Floor votes · Senate Apr 22, 2025 · House Apr 2, 2025

How they voted

3416
Passed
Total votes 50
Apr 22, 2025
D Democratic18
2 Yea 16 Nay
88% Nay
R Republican32
32 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
63
Key actions
11
Committee
9
Amendments
1
Apr 28, 2025
Signed into law
(H) Signed by Governor
lower
Apr 25, 2025
Upper · Passed
(S) Signed by President
upper
Apr 25, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 22, 2025
Senate · Passed
Senate Vote: pass (34-16)
senate
Apr 16, 2025
Upper · Passed
(S) Committee Report - (S) Taxation
upper
Apr 16, 2025
Upper · Passed
(S) Committee Executive Action - (S) Taxation
upper
Apr 3, 2025
Committee
(S) Referred to Committee - (S) Taxation
upper
Apr 2, 2025
House · Passed
House Vote: pass (55-40-5)
house
Mar 29, 2025
Lower · Passed
(H) Committee Report - (H) Appropriations
lower
Mar 28, 2025
Lower · Passed
(H) Committee Executive Action - (H) Appropriations
lower
Feb 20, 2025
Committee
(H) Rereferred to Committee - (H) Appropriations
lower
Feb 19, 2025
Lower · Passed
(H) Committee Report - (H) Taxation
lower
Feb 19, 2025
Lower · Passed
(H) Committee Executive Action - (H) Taxation
lower
Feb 11, 2025
Amended
(H) Tabled in Committee - (H) Taxation
lower
Jan 29, 2025
Committee
(H) Referred to Committee - (H) Taxation
lower
Jan 29, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Brandon Ler
Brandon Ler
RRepublican
MT
33