Arizona Form 290 is the Request for Penalty Abatement you file with the Arizona Department of Revenue when you want a non-audit penalty removed from your tax account. It goes to AZDOR’s Penalty Review Unit, and it succeeds only if you can show the late filing or late payment was due to reasonable cause and not willful neglect. Before the unit will even read your explanation, every delinquent return has to be filed and every non-audit balance paid.
What Form 290 Does and Doesn’t Do
Form 290 is a penalty-relief tool, nothing else. It does not extend a filing deadline, and it does not give you more time to submit a return. If you need extra time to file an Arizona individual income tax return, the right form is Arizona Form 204, Application for Filing Extension. An extension keeps a late-filing penalty from accruing in the first place. Form 290 asks AZDOR to forgive a penalty that has already been assessed.
The form covers individual income tax, corporate income tax, transaction privilege and use tax, withholding tax, and other tax types AZDOR administers. Some charges cannot be abated through Form 290 at all: interest, TPT licensing fees, audit-assessed penalties, and disallowed TPT accounting credits.
Get Your Account Into Compliance First
AZDOR will reject Form 290 outright if your account is out of compliance. Compliance means two things at the moment you submit: no delinquent tax returns of any type, and all non-audit tax liabilities paid in full. Pay any back taxes before you send the form. File any unfiled prior-year returns first. The Penalty Review Unit checks account status before it looks at your explanation.
How to Fill Out the Form
The form has four parts. An incomplete submission gets kicked back, and the penalty and interest on it keep accruing while you fix and refile, so it pays to do it right the first time.
Part 1: General Information
Enter your full legal name, current mailing address, and daytime phone number. Include your spouse’s name if the penalty relates to a joint return. There are fields for an email address and an alternate phone as well. If you want AZDOR to communicate with a tax professional on your behalf, attach a completed Arizona Form 285 with boxes 4b and 4c, or box 5, marked.
Part 2: Tax Type and Penalty Details
Check the box for the tax involved: Individual Income Tax, Transaction Privilege and Use Tax, Corporate Income Tax, Withholding Tax, or Other. Enter your taxpayer identification number: SSN or ITIN for individual income tax, EIN or TPT license number for business taxes. Enter the specific tax period the penalty covers, formatted as a date, and list each period separately if more than one is at issue. Enter the dollar amount of the penalty you want removed. Do not include interest in that figure. Only the penalty.
Part 3: Explanation and Documentation
This part decides the case. You have to explain in detail the specific circumstances that caused the late filing or payment and why those circumstances amount to reasonable cause. Vague statements like “I had personal problems” will not work. Give dates, describe the events, and draw the direct line between the event and the missed deadline. Attach additional pages if you need more space. Attach supporting documents too; requests submitted without them may be denied outright.
Part 4: Signature
Sign, date, print your name, and print your title. Individuals sign for themselves, and both spouses must sign a joint-return request if both want the abatement. For business entities, the signer must have authority to act for the taxpayer: a principal corporate officer for a corporation, a partner for a partnership, the trustee for a trust, the executor or personal representative for an estate, and a member with authority for an LLC. An authorized representative can sign in place of the taxpayer if a completed Form 285 is attached.
What Counts as Reasonable Cause
AZDOR reviews reasonable cause case by case. The department asks whether you exercised ordinary business care and prudence, whether the problem is recurring, and whether you have specific reasons the return or payment was late. Its guidance recognizes four main categories:
- A mathematical error on a return filed on time that led to an underpayment penalty.
- Serious illness or unavoidable absence. For individual returns, this covers illness affecting you or an immediate family member (spouse, parent, child, sibling, in-law, grandparent, or grandchild). “Unavoidable” absence means the absence could not have been prevented; vacation does not count. For business returns, the illness or absence must involve the person with sole authority to sign the return.
- Death of the taxpayer or an immediate family member for individual returns, or of the person with sole signing authority for a business return. A reasonable timeframe for filing after the death still applies.
- Inability to obtain the records needed to calculate the tax, for reasons beyond your control, such as a fire that destroyed your documents.
Arguments That Will Not Work
Three common explanations consistently fail. Not knowing the law is not reasonable cause for any tax type; AZDOR treats it as your responsibility to understand the laws that apply to you. Blaming someone else, such as an employee, accountant, or attorney who dropped the ball, does not establish reasonable cause either. You are expected to have controls that catch that failure. Financial hardship does not excuse a failure to file. It may be relevant to a late-payment situation in limited circumstances — ARS 42-1125(D) allows AZDOR to waive the late-payment penalty when a payment agreement is appropriate and the failure was due to reasonable cause — but it will not help with a late-filing penalty.
Documents to Attach
Your explanation is not enough on its own. Match documents to the reason you are giving:
- For illness, a doctor’s statement showing when the illness began and its severity, plus medical records that connect the illness to the missed deadline.
- For death, a copy of the death certificate.
- To dispute the timing of a payment, front and back copies of canceled checks or bank records showing when payment was made.
- For an extension issue, proof that a filing extension was properly submitted.
- For record loss, documentation of the event that destroyed the records, such as a fire report or insurance claim.
If your situation does not fit these categories, attach whatever specific, verifiable evidence supports your claim.
How to Submit
Send the completed form to the Penalty Review Unit by any of these methods:
- Mail: Arizona Department of Revenue, Penalty Review Unit, 1600 W Monroe St, Phoenix, AZ 85007-2612
- Fax: (602) 716-6787
- Email: PenaltyReview@azdor.gov
- In person at any Arizona Department of Revenue office
The form accepts electronic signatures with a digital certificate, which makes email practical. There is no dedicated online portal for Form 290; the state’s e-filing system handles returns and extensions, not penalty abatement requests. Keep a copy of what you submit along with your fax confirmation, email receipt, or postal tracking as proof of the submission date.
After You Submit
Allow up to six weeks for the Penalty Review Unit to process the request. AZDOR checks account compliance, reads your explanation, reviews your documentation, and decides whether the circumstances meet the reasonable-cause standard. If the request is approved, the penalty is removed and any interest that accrued specifically on that penalty is also reduced or eliminated. The underlying tax, and interest on the tax itself, remain your responsibility.
If the request is denied, you can appeal an adverse decision to the Arizona Board of Tax Appeals. A detailed initial explanation with solid documentation is far more effective than a thin first request followed by an appeal, so put the work into Part 3 and the attachments the first time.