Probate Bond: Definition and How It Works in California

By Eric Ridley, attorney, Ridley Law. Updated September 2026.

A probate bond is a form of insurance an executor or administrator posts to protect an estate against loss from mismanagement. California requires one unless the will waives it or every beneficiary waives it in writing, and even then the court can order one anyway.

How it works in California

Ridley Law’s guide to probate bonds in California covers cost and how a surety company sets the premium. By default, a personal representative must post a bond before the court issues letters. That requirement drops away only if the decedent’s will expressly waives bond, or if every beneficiary agrees in writing to waive it, and a judge can still require a bond over everyone’s objection if there is reason to (Prob. Code, §§ 8480, 8481).

The court sets the bond amount, largely from the value of the estate’s personal property and expected income, and the surety charges a premium based on that amount. A larger, more liquid estate generally means a larger bond and a higher premium.

Why it matters

The bond is not free money for the estate; it is a cost the estate pays a surety company to stand behind the fiduciary’s conduct. If the personal representative mismanages estate funds, the surety pays the resulting loss up to the bond amount, then pursues the fiduciary to recover it. For example, an out-of-state administrator with no local ties can face a higher premium, or a surety asking for a co-signer, before the court will accept the bond.

Common mistakes

Families often assume bond is optional whenever a will is silent on the subject; without an express waiver, it is required by default. Waiting until after the petition is filed to shop for a bond also costs time, since underwriting can take days the estate does not have while letters sit unissued.

Related terms

• Executor: usually the person who has to post a probate bond when the will does not waive it.
• Probate: the case in which the bond requirement arises.
• Trustee: trustees are almost never bonded the way executors and administrators are, a common source of confusion.

Part of the California estate planning glossary. For the full treatment, see Probate Bonds in California: Cost, Requirements, and Waivers.