Skip to main content
Skip to explanation
  1. Home
  2. Law Library
  3. A.R.S. § 14-10104
A.R.S. § 14-10104

What Counts as 'Knowledge' Under Arizona Trust Law

Verified April 4, 2026 • 57th Legislature, 1st Regular Session

Arizona's trust code defines what it means for a person or organization to 'know' something about a trust. Actual knowledge, receiving a notice, or having enough facts that you should have known all count. For organizations like banks, knowledge is tied to the employee responsible for the trust account.

Title 14, ARIZONA TRUST CODE

azleg.gov

Three Ways Knowledge Is Established

Trust law often hinges on whether someone knew a particular fact. Did the trustee know about a creditor's claim? Did the bank know the account holder had passed away? This statute spells out exactly what qualifies as knowledge under Arizona's trust code.

A person has knowledge of a fact if any of the following apply: 1. The person has actual knowledge of it. 2. The person has received a notice or notification of it. 3. From all the facts and circumstances known to the person at the time in question, the person has reason to know it.

A.R.S. § 14-10104(A)

The third category is the broadest. You do not need to have been told directly. If the circumstances were clear enough that a reasonable person would have figured it out, Arizona law treats you as if you knew.

How This Applies to Banks and Other Organizations

When a trust is held at a bank, brokerage, or other organization, the rules work differently. The organization only "knows" something once the employee responsible for the trust account receives the information, or would have received it if the organization followed reasonable internal procedures.

An organization that conducts activities through employees has notice or knowledge of a fact involving a trust only from the time the information was received by an employee having responsibility to act for the trust or would have been brought to the employee's attention if the organization had exercised reasonable diligence.

A.R.S. § 14-10104(B)

This matters in practice. If you notify a bank's general customer service line about a trust matter, the clock on their "knowledge" may not start until the information reaches the right department. Organizations are expected to maintain reasonable communication routines, but they are not required to have every employee monitoring every trust account.

14-10104. Knowledge A. Subject to subsection B, a person has knowledge of a fact if any of the following apply: 1. The person has actual knowledge of it. 2. The person has received a notice or notification of it. 3. From all the facts and circumstances known to the person at the time in question, the person has reason to know it. B. An organization that conducts activities through employees has notice or knowledge of a fact involving a trust only from the time the information was received by an employee having responsibility to act for the trust or would have been brought to the employee's attention if the organization had exercised reasonable diligence. An organization exercises reasonable diligence if it maintains reasonable routines for communicating significant information to the employee having responsibility to act for the trust and there is reasonable compliance with the routines. Reasonable diligence does not require an employee of the organization to communicate information unless the communication is part of the individual's regular duties or the individual knows a matter involving the trust would be materially affected by the information.
View on azleg.gov

This page provides general legal information about Arizona statutes and is not legal advice. For guidance on how this law applies to your situation, speak with a qualified attorney.

Related Questions

What does a trustee actually do?

A trustee manages trust assets according to the rules the trust creator set. While you are alive, you are typically both trustor and trustee. After you pass, your successor trustee distributes assets as instructed.

What is a Revocable Living Trust and how does it work?

A Revocable Living Trust lets you transfer asset ownership into a trust you control during your lifetime. When you pass, a successor trustee distributes assets to beneficiaries without probate.

How do I choose the right trustee for my estate?

Choose a trustee based on competence, not convenience. Avoid naming all children as co-trustees, which creates gridlock. Pick your most capable child as primary and name a backup.

Related Statutes

§ 14-10105Default and Mandatory Rules in Arizona Trust Law
§ 14-10109How Notice Works Under Arizona Trust Law
§ 14-10101The Arizona Trust Code: Short Title and What It Covers

Related Services

The foundation of your estate plan

Living Trusts

Pass your assets directly to the people you choose without probate, without court involvement, and without the delays and costs that come with both.

Learn more
Get Started Today

Need Help With Your Estate Plan?

Whether you are just getting started or reviewing an existing plan, RJP Estate Planning works hand in hand with experienced estate planning counsel to help you understand your options.

(480) 346-3570
RJP Estate Planning

Protecting Arizona families through comprehensive estate planning since 1995.

Quick Links

  • Services
  • About Us
  • Our Team
  • Resources
  • FAQ
  • Glossary
  • Educational Law Library
  • Events
  • Careers
  • Contact

Our Offices

Scottsdale Office

4110 N. Scottsdale Road Suite 170

Scottsdale, AZ 85251

Tucson Office

5151 E. Broadway Blvd Suite 750

Tucson, AZ 85711

Contact Us

(480) 346-3570care@rjpaz.com

© 2026 RJP Estate Planning. All rights reserved.

Privacy PolicyTerms of Service

The Planning Consultants at RJP Estate Planning provide services in the areas of estate planning, planning with wills and trusts, asset protection, probate avoidance, probate & estate administration, long-term care planning, Medicaid planning, asset protection from Medicaid, veterans benefits, charitable planning, special needs, estate tax planning, and business succession planning. They serve clients and their families throughout Scottsdale, Phoenix, and Sun City, Arizona, and the surrounding cities and towns.

RJP Estate Planning is not a law firm, cannot give legal advice, and does not prepare legal documents. For legal services, clients separately consult with an estate planning attorney or law firm.

RJP-AZ, LLC (RJP Estate Planning) is licensed to offer insurance products and receive commissions for those products. Its representatives who discuss these products with you hold individual licenses.

Securities are offered through CoreCap Investments, LLC, a registered broker-dealer and member FINRA/SIPC. Advisory services are offered through CoreCap Advisors, LLC, a registered investment advisor. RJP Estate Planning and RJP-AZ, LLC are separate and unaffiliated entities and are not affiliated with CoreCap Investments or CoreCap Advisors. Representatives that offer these services hold the required licenses.

Some products or services are provided by trusted companies/service providers. These companies/providers are separate and unaffiliated entities from RJP-AZ, LLC.