Templates Tax Law Tax Audit Protest and Appeal — Arizona

Tax Audit Protest and Appeal — Arizona

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Tax Audit Protest and Appeal (ARIZONA)

Quick-Reference Summary

Item Detail
Audit agency Arizona Department of Revenue ("ADOR" or "Department")
First-level administrative review DOR Hearing Office; for TPT/luxury/severance taxes, the Office of Administrative Hearings ("OAH") under A.R.S. § 41-1092
Independent administrative tribunal State Board of Tax Appeals ("BOTA")
Judicial forum Arizona Tax Court (Maricopa County Superior Court) under A.R.S. § 12-161 et seq.
NoPA appeal deadline (HARD) 90 days for individual income tax; 45 days for all other state taxes — measured from receipt of Notice of Proposed Assessment (A.R.S. § 42-1108(B))
Informal conference Available at protest stage; bypass available after "meet and confer" (A.R.S. § 42-1251.01)
BOTA appeal deadline 30 days from final DOR order/decision (A.R.S. § 42-1253; § 42-1251(E))
Tax Court deadline (direct from OAH/DOR) 60 days from DOR final decision (A.R.S. § 42-1254(C))
Tax Court deadline (after BOTA) 60 days from BOTA decision
Pre-payment to appeal? Not required for DOR protest or BOTA. Tax Court generally requires payment of contested amount OR a bond per A.R.S. § 42-1254 (with limited exceptions)
Collection during appeal Billing of the assessed amount is held in abeyance during the protest; interest continues to accrue under A.R.S. § 42-1123
Statute of limitations on assessment 4 years from return due date (A.R.S. § 42-1104); 6 years for 25%+ omitted; unlimited for fraud or no return
Burden of proof On taxpayer to overcome the assessment; assessment is "prima facie correct"
Standard at OAH Preponderance of the evidence
Major taxes covered Individual & Corporate Income Tax (Title 43); Transaction Privilege Tax / use tax (Title 42, Ch. 5); Withholding; Luxury (Title 42, Ch. 3); Severance
Power of attorney Form 285 (General Disclosure / Representation Authorization) or 285B (Disclosure)
Filing address (Protest) Arizona Department of Revenue, Office of Administrative Hearings / Audit Division, 1600 W. Monroe St., Phoenix, AZ 85007
BOTA address State Board of Tax Appeals, 100 N. 15th Ave., Suite 140, Phoenix, AZ 85007
Online filing (BOTA) https://bota.az.gov

Part A — Informal Conference Request Letter

Sender Letterhead

[LAW FIRM OR TAXPAYER NAME]
[Street Address]
[City], Arizona [ZIP]
Telephone: [(___) ___-____]
Email: [______________________]
[AZ Bar No. (if attorney): ____________]

Date and Recipient

Date: [__/__/____]

VIA EMAIL AND CERTIFIED MAIL, RETURN RECEIPT REQUESTED

[AUDITOR / AUDIT SUPERVISOR NAME]
Arizona Department of Revenue
[Audit Division — Individual / Corporate / TPT / Withholding]
1600 W. Monroe Street, Division Code [__]
Phoenix, AZ 85007

Re Block

Re: Request for Informal Conference / Protest Companion Letter
Taxpayer: [TAXPAYER LEGAL NAME]
AZ TPT License No. / SSN / FEIN: [____________]
Tax Type: [Individual Income / Corporate Income / TPT / Withholding / Other]
Period(s) at Issue: [MM/YYYY] – [MM/YYYY]
Notice of Proposed Assessment ("NoPA") / Determination Date: [__/__/____]
NoPA Reference No.: [____________]
Total Proposed Assessment: $[__________]

Body

Dear [Auditor / Supervisor]:

Taxpayer has timely filed (or is timely filing today) a Formal Protest of the above Notice of Proposed Assessment under A.R.S. §§ 42-1108 and 42-1251. Pursuant to A.R.S. § 42-1251(A), Taxpayer elects an INFORMAL CONFERENCE with the auditor and audit supervisor before any escalation to the Office of Administrative Hearings or a formal hearing.

1. Authority. A.R.S. § 42-1251(A) provides that, upon protest, "[t]he taxpayer may choose between an informal conference or a formal hearing." This letter exercises that election in favor of an informal conference.

2. Representative. [REPRESENTATIVE NAME, FIRM, ADDRESS, PHONE, EMAIL, BAR NO.] is authorized to represent Taxpayer. A duly executed Arizona Form 285 is enclosed.

3. Disputed Items. Principal disputed items are described in Exhibit A and include:

# Issue Adjustment Taxpayer Position
1 [____________] $[______] [____________]
2 [____________] $[______] [____________]
3 [____________] $[______] [____________]

4. Conference Format. Taxpayer requests a [telephone / video / in-person] conference at the Department's offices.

5. TPT "Meet and Confer". [If TPT case:] Taxpayer further reserves the right under A.R.S. § 42-1251.01 to request a meet-and-confer with a designated DOR appeals officer and, after that meeting, to bypass OAH and appeal directly to BOTA or the Arizona Tax Court.

6. Reservation of Rights. Taxpayer reserves all rights to escalate to a formal hearing, to appeal to BOTA under A.R.S. § 42-1253, to bring an action in the Arizona Tax Court under A.R.S. § 42-1254, and to seek a refund under A.R.S. § 42-1118.

Respectfully,

________________________________
[NAME], [TITLE]
[For:] [TAXPAYER]


Part B — Formal Protest / Petition for Hearing or Redetermination

I. Caption

STATE OF ARIZONA
DEPARTMENT OF REVENUE
HEARING OFFICE / OFFICE OF ADMINISTRATIVE HEARINGS

Party Role
[TAXPAYER LEGAL NAME], Petitioner
AZ Tax ID / TPT License / FEIN / SSN: [______]
In re: NoPA Reference No. [______]

PROTEST AND PETITION FOR HEARING / REDETERMINATION
(A.R.S. §§ 42-1108, 42-1251; A.A.C. R15-10)

II. Identifying Information

  1. Taxpayer: [Name]; [Mailing address]; [Phone]; [Email].
  2. Tax IDs: SSN [____]; FEIN [____]; AZ TPT License [____].
  3. Tax Type / Period(s): [____].
  4. Representative: [NAME, FIRM, ADDRESS, PHONE, EMAIL, AZ BAR NO.]; Form 285 attached as Exhibit 1.
  5. NoPA / Determination Protested: Notice of Proposed Assessment dated [__/__/____]; Ref. No. [______]; attached as Exhibit 2.
  6. Amount in dispute:
Component Total Contested Uncontested
Tax $[______] $[______] $[______]
Penalty $[______] $[______] $[______]
Interest $[______] $[______] $[______]
Total $[______] $[______] $[______]
  1. Uncontested amount: Taxpayer [has paid / will pay] the uncontested portion ($[____]) and any uncontested local TPT to stop the interest clock as to that amount. Exhibit 3.

III. Timeliness

The NoPA was [mailed / received] on [__/__/____]. The applicable appeal period is [90 / 45] days under A.R.S. § 42-1108(B), expiring on [__/__/____]. This Protest is filed on [__/__/____], within the statutory window. A.R.S. § 42-1251.A.

IV. Election

Taxpayer elects:

Informal conference with the auditor and audit supervisor pursuant to A.R.S. § 42-1251(A); OR

Formal hearing before the DOR Hearing Office / Office of Administrative Hearings (A.R.S. § 41-1092 et seq.; A.A.C. R15-10); OR

TPT Meet-and-Confer with a designated DOR appeals officer pursuant to A.R.S. § 42-1251.01, after which Taxpayer reserves the right to bypass OAH and appeal directly to BOTA or the Arizona Tax Court.

V. Statement of Facts

  1. Taxpayer is a [_____] with principal place of business at [_____].
  2. During the audit period, Taxpayer's business activities consisted of [_____].
  3. ADOR commenced an audit on [__/__/____] under [audit type].
  4. The audit yielded a NoPA dated [__/__/____] reflecting [SUMMARIZE ADJUSTMENTS].
  5. The audit workpapers, IDR responses, and reconciliations are attached as Exhibit 4.

VI. Grounds for Protest (A.R.S. § 42-1251(A): "reasons why the redetermination should be granted and the amount in which any tax, interest and penalties should be reduced")

Ground 1 — Erroneous Application of Statute. The Department erroneously [included/excluded] [item] under A.R.S. § 43-____ / § 42-5____ / [other]. Correct application yields a reduction of $[____].

Ground 2 — TPT Classification. Gross receipts were misclassified under A.R.S. § 42-5061 (retail) when properly classified under [§ 42-5071 / § 42-5075 / other] or are exempt under [Article 4 / 5].

Ground 3 — Apportionment / Sourcing. Receipts were improperly apportioned to Arizona under A.R.S. § 43-1147 / market-based sourcing rules.

Ground 4 — Use Tax / TPT Nexus. Taxpayer lacked substantial nexus under A.R.S. § 42-5044 / Wayfair during [periods] because [____].

Ground 5 — Statute of Limitations. A.R.S. § 42-1104 bars portions of the assessment.

Ground 6 — Reasonable Cause / Penalty Abatement. Penalties should be abated under A.R.S. § 42-1125 because Taxpayer acted with reasonable cause and not willful neglect (rely on Form 290 — Request for Penalty Abatement, if applicable).

Ground 7 — Sampling / Methodology. The audit projection is statistically invalid because [____].

Ground 8 — Federal Conformity / Federal Change. Income tax adjustments derive from a federal RAR that is incorrect or not yet final.

Ground 9 — Constitutional. The assessment violates the Commerce Clause, Due Process, P.L. 86-272, or Internet Tax Freedom Act as applied.

VII. Supporting Facts and Documents for Each Ground

For each ground asserted, Taxpayer provides:

Ground 1: Facts: [____]. Documents: Exhibits [__]–[__]. Authorities: [A.R.S., A.A.C., ADOR Decisions, Court of Appeals opinions].

[Repeat for each ground.]

VIII. Suspension of Billing

Pursuant to A.R.S. § 42-1251 and ADOR's published practice, billing of the contested deficiency is suspended pending completion of the appeals process. Taxpayer acknowledges that interest continues to accrue under A.R.S. § 42-1123 and reserves the right to pay any portion of the contested amount under protest to stop interest.

IX. Relief Requested

WHEREFORE, Taxpayer respectfully requests an order:

(a) Cancelling the contested deficiency in the amount of $[______];
(b) Abating penalties of $[______];
(c) Confirming refund of any contested amounts previously paid, plus statutory interest under A.R.S. § 42-1123 / § 42-1118;
(d) Such other and further relief as is just.

X. Verification

I declare under penalty of perjury under the laws of the State of Arizona that the foregoing is true and correct to the best of my knowledge and belief.

Dated: [__/__/____]

________________________________
[NAME], [TITLE]
[For:] [TAXPAYER]

XI. Filing Instructions

By Mail:
Arizona Department of Revenue
Hearing Office / [Audit Division Code]
1600 W. Monroe Street
Phoenix, AZ 85007

Online: Through AZTaxes.gov secure messaging or the Department's online appeals portal (available since August 2018).

XII. Exhibit List

Ex. Description
1 Form 285 — General Disclosure / Representation Authorization
2 Notice of Proposed Assessment
3 Proof of payment of uncontested amount (if any)
4 Audit workpapers and IDR responses
5 Resale / exemption certificates (TPT)
6 Returns under audit
7 Apportionment / sourcing workpapers
8 Form 290 — Request for Penalty Abatement (if applicable)
9 Authorities binder

Part C — Appeal Cover Letter to BOTA or Arizona Tax Court

Sender Letterhead

[LAW FIRM NAME]
[Street Address]
[City], Arizona [ZIP]
Telephone: [(___) ___-____]
Email: [______________________]
AZ Bar No.: [____________]

Date: [__/__/____]

OPTION 1 — Notice of Appeal to BOTA

VIA BOTA E-FILING (https://bota.az.gov) AND CERTIFIED MAIL

State Board of Tax Appeals
100 N. 15th Avenue, Suite 140
Phoenix, AZ 85007

Re: [TAXPAYER] v. Arizona Department of Revenue
Notice of Appeal — Final DOR Order dated [__/__/____]
Tax Type / Period: [____________]
Amount in Controversy: $[__________]

Dear Clerk:

Enclosed for filing are:

  1. Notice of Appeal pursuant to A.R.S. §§ 42-1253 and 42-1251(E), appealing the Final Order of the Director / OAH decision dated [__/__/____].
  2. Filing fee of $[______].
  3. Copy of the Final Order being appealed.
  4. Certificate of Service on the Arizona Department of Revenue and the Office of the Attorney General — Tax, Bankruptcy and Collections Section.

Timeliness. The DOR Final Order was issued on [__/__/____]. This Notice of Appeal is filed on [__/__/____], within the 30-day window in A.R.S. § 42-1253 and § 42-1251(E).

Issues. The Final Order is in error for the reasons stated in the Petition under appeal, incorporated herein by reference.

Respectfully submitted,

________________________________
[ATTORNEY NAME], Esq.
AZ Bar No. [__________]
Attorney for Appellant

OPTION 2 — Complaint to the Arizona Tax Court

VIA E-FILING AT MARICOPA COUNTY SUPERIOR COURT

Clerk of the Superior Court — Arizona Tax Court
Maricopa County Superior Court
201 W. Jefferson Street
Phoenix, AZ 85003

Re: [TAXPAYER] v. Arizona Department of Revenue
Complaint — De Novo Action under A.R.S. § 42-1254
Final Order dated: [__/__/____]
Amount in Controversy: $[__________]

Dear Clerk:

Enclosed for filing are:

  1. Complaint appealing the Final Order of the Department of Revenue / BOTA / OAH dated [__/__/____], pursuant to A.R.S. § 42-1254 and A.R.S. § 12-163.
  2. Civil Cover Sheet and Summons.
  3. Filing fee of $[______].
  4. Proof of payment of the contested tax of $[______] (Check / EFT No. [____] dated [____]) OR Bond under A.R.S. § 42-1254(D) in the penal sum of $[______].
  5. Certificate of Service on the Department of Revenue and the Office of the Attorney General — Tax, Bankruptcy and Collections Section pursuant to A.R.S. § 42-1254(F).

Timeliness. The DOR / BOTA Final Order was issued on [__/__/____]. This Complaint is filed on [__/__/____], within 60 days as required by A.R.S. § 42-1254(C).

Jurisdiction. The Arizona Tax Court has exclusive jurisdiction over this de novo action under A.R.S. § 12-161 et seq. Venue is proper in Maricopa County.

Burden of proof. Taxpayer acknowledges the prima facie correctness of the assessment but the record evidence rebuts it for the reasons stated in the Complaint.

Respectfully submitted,

________________________________
[ATTORNEY NAME], Esq.
AZ Bar No. [__________]
Attorney for Plaintiff

cc: Arizona Department of Revenue — Office of the Director
Office of the Arizona Attorney General — Tax Section


Part D — Pre-Filing Checklist

Calendaring

☐ NoPA receipt date logged: [__/__/____]
☐ Tax type confirmed → appeal window (90 days IIT vs. 45 days other): [__/__/____]
☐ Protest filing deadline (HARD): [__/__/____]
☐ Informal conference / meet-and-confer requested by: [__/__/____]
☐ DOR / OAH final decision received: [__/__/____]
☐ BOTA 30-day appeal deadline (HARD): [__/__/____]
☐ Tax Court 60-day appeal deadline (HARD): [__/__/____]

Protest Package — A.R.S. § 42-1251.A Required Contents

☐ Reasons why redetermination should be granted
☐ Amount by which tax, interest, and penalties should be reduced
☐ Form 285 (Power of Attorney) for representative
☐ Copy of NoPA attached
☐ Election: informal conference vs. formal hearing
☐ Taxpayer signature / authorized officer

Substantive Review

☐ Audit workpapers and IDR responses analyzed
☐ Reconciliation: book to AZ taxable income / gross receipts
☐ Federal RAR / amended return status confirmed
☐ TPT classification reviewed against current ADOR rulings
☐ Exemption certificates / wholesale (Form 5000) verified
☐ Nexus / Wayfair analysis completed
☐ Apportionment / sourcing reviewed (A.R.S. § 43-1147)
☐ Statute of limitations (A.R.S. § 42-1104) confirmed
☐ Penalty abatement (Form 290) considered
☐ Voluntary disclosure / closing agreement options reviewed

Collection / Payment

☐ Uncontested amount paid (interest stops as to that portion)
☐ Decision on payment vs. bond for Tax Court (A.R.S. § 42-1254)
☐ Interest accrual monitored (A.R.S. § 42-1123)

Service / Filing

☐ Protest filed within 90/45-day window
☐ BOTA appeal e-filed within 30 days of DOR final order
☐ Tax Court complaint filed within 60 days; AGO served per A.R.S. § 42-1254(F)
☐ Filing fees paid; bond posted if applicable


Sources and References

  • Arizona Department of Revenue — Appeals: https://azdor.gov/appeals
  • "Your Rights as an Arizona Individual Taxpayer" (Pub. 2012-003): https://azdor.gov/sites/default/files/2023-03/PUBLICATION_2012_003.pdf
  • A.R.S. § 42-1108: https://www.azleg.gov/ars/42/01108.htm
  • A.R.S. § 42-1251: https://www.azleg.gov/ars/42/01251.htm
  • A.R.S. § 42-1251.01 (TPT meet-and-confer): https://www.azleg.gov/ars/42/01251-01.htm
  • A.R.S. § 42-1253 (BOTA appeal): https://www.azleg.gov/ars/42/01253.htm
  • A.R.S. § 42-1254 (Tax Court): https://www.azleg.gov/ars/42/01254.htm
  • A.A.C. R15-10 (DOR hearings): https://apps.azsos.gov/public_services/Title_15/15-10.pdf
  • State Board of Tax Appeals: https://bota.az.gov
  • Arizona Tax Court (Maricopa County Superior Court): https://superiorcourt.maricopa.gov/departments/civil-court/tax-court/
  • Form 285 (POA): https://azdor.gov/forms/poa-and-disclosure-forms
  • Form 290 (Penalty Abatement Request): https://azdor.gov/forms/penalty-abatement-form
  • Online Appeals Portal: https://azdor.gov/appeals/online-appeals
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About This Template

Tax law covers the paperwork that documents income, deductions, disputes, and settlements with the IRS and state tax authorities. Protests, offers in compromise, installment agreement requests, and appeals each have their own forms, supporting documentation, and strict deadlines. Well-prepared tax correspondence is often the difference between a negotiated resolution and an enforcement action with levies, liens, or penalties.

Important Notice

This template is provided for informational purposes. It is not legal advice. We recommend having an attorney review any legal document before signing, especially for high-value or complex matters.

Last updated: May 2026