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A.R.S. § 14-7510

Gap-Filling Rules for Fiduciary Transactions in Arizona

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

When the Uniform Fiduciaries Act does not cover a specific situation, Arizona law fills in the gaps using established rules of law and equity. That includes the law merchant, trust law, agency law, negotiable instruments rules, and banking regulations.

Title 14, TRUST ADMINISTRATION

azleg.gov

What Happens When the Statute Does Not Cover Your Situation

No single statute can anticipate every scenario involving fiduciary transactions. This section makes sure there is no legal vacuum. If the Uniform Fiduciaries Act does not address a particular question, the answer comes from well-established legal traditions that have governed these relationships for centuries.

In any case not provided for in this article the rules of law and equity, including the law merchant and those rules of law and equity relating to trusts, agency, negotiable instruments and banking, shall continue to apply.

A.R.S. § 14-7510

The "law merchant" is one of the oldest bodies of commercial law, developed through centuries of trade practice. By referencing it alongside trust law, agency law, and banking regulations, this statute ensures that fiduciary transactions are governed by a complete and coherent set of rules.

Why This Matters for Trust Administration

For trustees and the institutions they work with, this statute provides reassurance. Even if a situation falls outside the specific provisions of the Uniform Fiduciaries Act, there is still a legal framework that applies. Courts can draw on equity principles, commercial law traditions, and established banking practices to resolve disputes.

This is particularly relevant when trustees engage in complex financial transactions, manage investment accounts, or interact with multiple financial institutions. The rules do not disappear just because the statute is silent on a specific point.

In any case not provided for in this article the rules of law and equity, including the law merchant and those rules of law and equity relating to trusts, agency, negotiable instruments and banking, shall continue to apply.
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 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 much does estate planning cost in Arizona?

The cost of estate planning in Arizona varies based on complexity. When broken down over the years your plan is in effect, a professionally designed estate plan often costs just a few cents a day.

What is the difference between a revocable and an irrevocable trust?

Related Statutes

§ 14-7401Arizona Trust Principal and Income Act: Key Definitions
§ 14-7402Fiduciary Duties When Allocating Trust Income and Principal
§ 14-7403Trustee's Power to Adjust Between Principal and Income

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