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HB4029 • 2026

income tax changes; notification; forms

HB4029 - income tax changes; notification; forms

Budget Taxes
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Justin Olson
Last action
2026-03-30
Official status
Senate minority caucus
Effective date
Not listed

Plain English Breakdown

The bill summary does not specify exact dates for when the provisions will take effect, leaving this as an open question.

Income Tax Changes; Notification and Forms

This bill requires annual evaluations of potential fiscal impacts from conforming Arizona tax laws to federal changes, mandates notifications for significant revenue changes, and updates tax form requirements.

What This Bill Does

  • Requires the Governor's Office of Strategic Planning and Budgeting (OSPB) and the Joint Legislative Budget Committee (JLBC) to annually evaluate if conforming Arizona law with federal income tax code changes will affect state revenues by $100 million or more.
  • If OSPB or JLBC finds a significant fiscal impact, the Governor must decide whether a special legislative session is needed for conformity and notify relevant officials before September 30 of each year.
  • Directs the Director of the Arizona Department of Revenue (ADOR) to prepare annual reports summarizing federal tax code changes and their potential impacts on state revenues by January 10 of each year.
  • Updates ADOR's authority to prescribe tax return forms that may differ from existing statutes, provided they are consistent with current laws when issued.

Who It Names or Affects

  • The Governor and their office
  • The Joint Legislative Budget Committee (JLBC)
  • The Director of the Arizona Department of Revenue (ADOR)

Terms To Know

Conformity
Adopting federal tax law changes into state laws to maintain consistency in calculating income taxes.
Fiscal Impact
The financial effect of conforming Arizona's tax laws with federal changes, specifically if it exceeds $100 million in revenue impact.

Limits and Unknowns

  • Does not specify the exact effective date for when these provisions will take effect.
  • Does not provide details on how ADOR will handle situations where prescribed forms are inconsistent with existing statutes.
  • The bill's summary does not explicitly state who is responsible for funding any additional costs associated with special legislative sessions.

Amendments

These notes stay tied to the official amendment files and metadata from the legislature.

Plain English: Adopted 1

  • The official amendment file could not be read automatically during the last sync, so only the official amendment metadata is shown right now.

Plain English: Fifty-seventh Legislature Ways & Means Second Regular Session H.B.

  • Fifty-seventh Legislature Ways & Means Second Regular Session H.B.
  • 4029 PROPOSED HOUSE OF REPRESENTATIVES AMENDMENTS TO H.B.
  • 4029 (Reference to printed bill) The bill as proposed to be amended is reprinted as follows: 1 Section 1.
  • Title 41, chapter 1, article 1, Arizona Revised 2 Statutes, is amended by adding section 41-112, to read: 3 41-112.
  • This amendment summary is using official source text because generated interpretation was skipped for this run.

Plain English: Fifty-seventh Legislature Finance Second Regular Session H.B.

  • Fifty-seventh Legislature Finance Second Regular Session H.B.
  • 4029 COMMITTEE ON FINANCE SENATE AMENDMENTS TO H.B.
  • 4029 (Reference to House engrossed bill) The bill as proposed to be amended is reprinted as follows: 1 Section 1.
  • Title 41, chapter 1, article 1, Arizona Revised 2 Statutes, is amended by adding section 41-112, to read: 3 41-112.
  • This amendment summary is using official source text because generated interpretation was skipped for this run.

Plain English: Fifty-seventh Legislature Finance Second Regular Session H.B.

  • Fifty-seventh Legislature Finance Second Regular Session H.B.
  • 4029 PROPOSED SENATE AMENDMENTS TO H.B.
  • 4029 (Reference to House engrossed bill) The bill as proposed to be amended is reprinted as follows: 1 Section 1.
  • Title 41, chapter 1, article 1, Arizona Revised 2 Statutes, is amended by adding section 41-112, to read: 3 41-112.
  • This amendment summary is using official source text because generated interpretation was skipped for this run.

Bill History

  1. 2026-03-30 Senate

    Senate minority caucus

  2. 2026-03-30 Senate

    Senate majority caucus

  3. 2026-03-10 Senate

    Senate second read

  4. 2026-03-09 Senate

    Senate Rules: PFC

  5. 2026-03-09 Senate

    Senate Finance: DPA

  6. 2026-03-09 Senate

    Senate first read

  7. 2026-02-26 Senate

    Transmitted to Senate

  8. 2026-02-26 House

    House third read passed

  9. 2026-02-23 House

    House committee of the whole

  10. 2026-02-17 House

    House minority caucus

  11. 2026-02-17 House

    House majority caucus

  12. 2026-02-10 House

    House second read

  13. 2026-02-09 House

    House Rules: C&P

  14. 2026-02-09 House

    House Ways & Means: DPA

  15. 2026-02-09 House

    House first read

Official Summary Text

HB4029 - 572R - Senate Fact Sheet

Assigned to
FIN������������������������������������������������������������������������������������������������� AS
PASSED BY COMMITTEE

ARIZONA STATE SENATE

Fifty-Seventh
Legislature, Second Regular Session

AMENDED

FACT SHEET FOR
H.B. 4029

income tax
changes; notification; forms

Purpose

Requires the
Governor's Office of Strategic Planning and Budgeting (OSPB) and the Joint
Legislative Budget Committee (JLBC) to each annually evaluate whether the
fiscal impact of conforming Arizona law to the changes adopted by the U.S.
Congress in the prior year will exceed $100 million. Requires the Governor, in
a year determined to have a fiscal impact of at least $100 million, to
determine if a special session of the Legislature is necessary for the purposes
of conformity.

Background

The Arizona
Legislature periodically updates the statutory definition of the U.S. IRC to
include any federal provisions that became effective in the preceding calendar
year as a means of paralleling the computation of Arizona income tax and other
statutory references throughout the Arizona Revised Statutes to the amended
U.S. IRC. Tax conformity with the U.S. IRC is deemed necessary because the
calculation of Arizona corporate income tax liability begins with federal
taxable income. Similarly, federal adjusted gross income (FAGI) is the starting
point for individual income tax assessment.

Conformity
means
an amendment to
A.R.S.
� 43-105
that results in adoption of the definition of the U.S. IRC for the
taxable year.
Nonconformity
means either: 1) conformity plus another
amendment that does not conform to specific provisions of the U.S. IRC as statutorily
defined for the taxable year; or 2) no amendment to the definition of U.S. IRC for
the taxable year (
A.R.S.
� 43-107
).

By January 10
each year, the Director of the Arizona Department of Revenue (ADOR) must
prepare and submit to the Legislature a report containing a summary of all
revisions made to the U.S. IRC during the preceding calendar year (
A.R.S.
� 42-1005
).

By adopting the
income tax statutes, the Legislature declared its intent to adopt the
provisions of the U.S. IRC relating to FAGI and federal taxable income, subject
only to modifications contained in state law (
A.R.S.
� 43-102
).

All tax returns
required by state law must be in a form that is prescribed by ADOR, and ADOR
must prepare blank return forms and furnish the forms on request (
A.R.S.
� 43-323
).

There is no
anticipated fiscal impact to the state General Fund associated with this
legislation.

Provisions

1.

Requires both OSPB and JLBC to annually evaluate and determine if
conforming Arizona law to the changes made to the U.S. IRC for calculating FAGI
for the purpose of calculating taxable income in Arizona will result in an
increase or decrease of income tax revenues of $100 million or more compared to
the amount of revenues that would be collected if Arizona law did not conform
to the U.S. IRC changes.

2.

Requires the Governor, before September 30 of each year in which either
OSPB or JLBC determines that conforming to the U.S. IRC will increase or
decrease income tax revenues by $100 million or more, to determine if a special
session of the Legislature is necessary to conform Arizona law to the U.S. IRC
changes.

3.

Requires the Governor, if the Governor determines that a special session
is necessary to conform Arizona law to the U.S. IRC changes, to notify the
President of the Senate and the Speaker of the House of Representatives in
writing of the determination and the reasons that support the determination.

4.

Requires the Director of ADOR, by September 30 each year, to prepare and
submit to the Legislature an initial report containing a summary of all
revisions made to the U.S. IRC during the preceding calendar year.

5.

Specifies that the report submitted by the Director of ADOR to the
Legislature on January 10 of each year must be a final report of the revisions
made to the U.S. IRC during the preceding calendar year.

6.

Makes technical changes.

7.

Becomes effective on the general effective date.

Amendments Adopted by
Committee

�

Removes the prohibition against ADOR prescribing tax return forms
that are inconsistent with the statutes in effect on the date the forms are
issued.

House Action
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Senate
Action

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Prepared by Senate Research

March 25, 2026

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Current Bill Text

Read the full stored bill text
HB4029 - 572R - H Ver

House Engrossed

income tax changes;
notification; forms

State of Arizona

House of Representatives

Fifty-seventh Legislature

Second Regular Session

2026

HOUSE BILL 4029

AN
ACT

amending title 41, chapter 1, article 1,
Arizona Revised Statutes, by adding section 41-112; amending sectionS 42-1005
AND 43-323, Arizona Revised Statutes; relating to income tax.

(TEXT OF BILL BEGINS ON NEXT PAGE)

Be it
enacted by the Legislature of the State of Arizona:

Section
1.
1. Title
41, chapter 1, article 1, Arizona Revised Statutes, is amended by adding
section 41-112, to read:

START_STATUTE
41-112.

Evaluation and determination of income tax law changes; special
session analysis and notification

A. Each year, The governor's office
of strategic planning and budgeting and the joint legislative budget committee
shall
individually evaluate and determine if conforming
the laws of this state with changes made to the internal revenue code for
calculating federal adjusted gross income for the purpose of calculating
taxable income in this state will result in an increase or decrease of income
tax revenues of $100,000,000 or more compared to the amount of income tax
revenues that would be collected if the laws of this state did not conform to
the internal revenue code changes.

B. Before September 30 of each year
in which the evaluation made
by either the
governor's office of strategic planning and budgeting or the joint legislative
budget committee pursuant to subsection A of this section
exceeds an increase or decrease of income tax revenues of $100,000,000
or more, the governor shall determine if a special session of the legislature
is necessary to conform the laws of this state to the changes in the internal
revenue code and shall notify in writing the president of the senate and the
speaker of the house of representatives of that determination and the reasons
that support the determination.

END_STATUTE

Sec.
2.
2. Section
42-1005, Arizona Revised Statutes, is amended to read:

START_STATUTE
42-1005.

Powers and duties of director

A. The director shall be directly responsible to the
governor for the direction, control and operation of the department and shall:

1. Make such administrative rules as
he

the director
deems necessary and proper to effectively
administer the department and enforce this title and title 43.

2. On or before November 15 of each year
,
issue a written report to the governor and legislature
concerning the department's activities during the year. In any
election year
,
a copy of this report shall be made
available to the governor-elect and to the legislature-elect.

3. On or before December 15 of each year
,
issue a supplemental report
which

that
shall also contain proposed legislation recommended by the
department for the improvement of the system of taxation in
the

this
state.

4. In addition to the report required by paragraph 2
of this subsection, on or before November 15 of each year
,

issue a written report to the governor and legislature detailing the
approximate costs in lost revenue for all state tax expenditures in effect at
the time of the report. For the purpose of this paragraph, "tax
expenditure" means any tax provision in state law
which

that
exempts, in whole or in part, any persons, income,
goods, services or property from the impact of established taxes
,

including deductions, subtractions, exclusions, exemptions, allowances and
credits.

5.
Annually,
On or before
January 10

September 30 of each year
,
prepare and submit to the legislature
a

an initial

report containing a summary of
all the revisions made to the internal revenue code during the preceding
calendar year
and on or before january 10 of each year, submit a
final report to the legislature
.

6. Provide
such
assistance to
the governor and the legislature as they may require.

7. Delegate
such
administrative
functions, duties or powers as
he

the director
deems necessary to carry out the efficient
operation of the department.

B. The director may enter into an agreement with the
taxing authority of any state
which

that
imposes a tax on or measured by income to provide that
compensation paid in that state to residents of this state is exempt in that
state from liability for income tax, the requirement for filing a tax return
and withholding tax from compensation. Compensation paid in this
state to residents of that state is reciprocally exempt from the requirements
of title 43.

END_STATUTE
END_STATUTE
END_STATUTE

Sec.
3.
3. Section
43-323, Arizona Revised Statutes, is amended to read:

START_STATUTE
43-323.

Place and form of
filing returns

A. All returns required by this title shall be in
such a form as the department may from time to time prescribe and shall be
filed with the department.

B. The department shall prescribe a short form
return for individual taxpayers who:

1. Are eligible and elect to pay tax based on the
optional tax tables pursuant to section 43-1012.

2. Elect to claim the optional standard deduction
pursuant to section 43-1041, subsection A, but not the increased amount
for charitable deductions under section 43-1041, subsection I.

3. Elect not to file for credits against income tax
liability other than those contained in sections 43-1072, 43-1072.01,
43-1072.02, 43-1073 and 43-1073.01.

4. Are not required to add any income under section
43-1021 and do not elect any subtractions under section 43-1022,
except for the exemptions allowed under section 43-1023.

C. The department may provide a simplified return
form for individual taxpayers who:

1. Are eligible and elect to pay tax based on the
optional tax tables pursuant to section 43-1012.

2. Are residents for the full taxable year.

3. File as single individuals or married couples
filing joint returns under section 43-309.

4. Are not sixty-five years of age or older or
blind at the end of the taxable year.

5. Claim no exemptions under section 43-1023
for the taxable year.

6. Elect to claim the optional standard deduction
under section 43-1041, subsection A, but not the increased amount for
charitable deductions under section 43-1041, subsection I.

7. Are not required to add any income under section
43-1021 and do not elect to claim any subtractions under section 43-1022
or file for any credits under chapter 10, article 5 of this title, except the
credits provided by sections 43-1072.01, 43-1072.02 and 43-1073.

8. Do not elect to contribute a portion of any tax
refund as provided by any provision of chapter 6, article 1 of this title.�
Notwithstanding any provision of chapter 6, article 1 of this title, a
simplified return form under this subsection shall not include any space for
the taxpayer to so contribute a portion of a refund.

D. The department shall prepare blank forms for the
returns and furnish them on request.� Failure to receive or secure the form
does not relieve any taxpayer from making any return required.

E. An individual income tax preparer who prepares
more than ten original income tax returns that are timely filed during any
taxable year that begins from and after December 31, 2017 shall file
electronically all individual tax returns prepared by that tax preparer, for
that taxable year and each subsequent taxable year.� An individual income tax
preparer may not charge a separate fee to the taxpayer for filing a return
using the department's electronic filing program.� This subsection does not
apply if the taxpayer elects to have the return filed on paper or if the return
cannot be filed electronically for reasons outside of the tax preparer's
control.

F. Fiduciary returns, partnership returns,
withholding returns and corporate returns shall be filed electronically for
taxable years beginning from and after December 31, 2019, or when the
department establishes an electronic filing program, whichever is
later. Any person who is required to file electronically pursuant to
this subsection may apply to the director, on a form prescribed by the
department, for an annual waiver from the electronic filing requirement.� The
director may grant the waiver, which may be renewed for one subsequent year, if
any of the following applies:

1. The taxpayer has no computer.

2. The taxpayer has no internet access.

3. Any other circumstance considered to be worthy by
the director exists.

G. A waiver is not
required if the return cannot be electronically filed for reasons beyond the
taxpayer's control, including situations in which the taxpayer was instructed
by either the internal revenue service or the department of revenue to file by
paper.

H. The department may
not prescribe forms for returns pursuant to this section that are inconsistent
with the statutes that are in effect on the date that the forms are issued.

END_STATUTE