The account for the auto payment is no longer valid for my tax due. I need to update the account info to pay state taxes this year but don't know where to do this.
If the return was filed using account information of a specific account and the return was accepted, then you cannot change the bank account information on the return after the fact.
You might be able to contact the AZ Department of Revenue to tell them different account information.
Here is some information from the AZ FAQs:
Payments can be canceled until 5:00 pm (MST) on the business day prior to the requested withdrawal date.
Payments that can be canceled include payments made through e-filed returns and payments made on AZTaxes.gov.
Payment through vendor:
If the payment was scheduled through an electronic filing program:
Payment by individual:
If the payment was scheduled on AZTaxes.gov,:
A confirmation number is required. For payments by paper, ADOR will process the check when it is received and does not hold it for processing at later dates. For paper checks, remember to include the following:
This same information should assist you in providing a different account number if the one you provided is not good.
You can pay the balance due by credit card:
How much does it cost to pay Arizona Income Tax with a credit card?
2.35% convenience fee, minimum of $1.50, to make a tax payment with a credit card. $3.50 convenience fee to make a tax payment with a debit card. Note: To determine if you have a Visa Corporate debit card or a Visa Consumer branded debit card, please contact your financial institution that issued the card.
CUSTOMER CARE
Customer Service Phone Representatives are available Monday through Friday from 8 a.m. to 5 p.m. (MST)
Please Note: Due to periods of high call volumes during certain times of the year, please consider contacting the department on Thursdays or Fridays before noon or after 2 p.m.
Phone:
(602) 255-3381
Toll-free: (International calls and from area codes 520 and 928 only)
(800) 352-4090
Fax:
(602) 542-2072
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