What Preponderance of the Evidence Means
When a dispute lands in probate court, the judge does not require absolute certainty. The standard here is preponderance of the evidence. In plain terms, the side making a claim needs to show that their version of events is more likely true than not. Think of it as tipping the scales just past the halfway mark.
Except as otherwise provided in this title, the standard of proof required in a judicial proceeding brought pursuant to this title is the preponderance of evidence. Parties have the ultimate burden of persuasion as to matters with respect to which they have the initial burden of proof.
A.R.S. § 14-1311This standard applies across most of Title 14, covering disputes about wills, trusts, estates, guardianships, and conservatorships. Unless a specific statute sets a different bar, preponderance is the default.
Why This Matters for Families
Understanding the standard of proof helps set expectations. If someone contests a will, for example, the person challenging it must present enough evidence to tip the scales in their favor. The same applies to disputes over trustee conduct, claims against an estate, or questions about whether a document was properly executed.
The statute also makes clear that the party who raises a claim carries the burden of persuasion throughout the case. You cannot simply make an accusation and wait for the other side to disprove it. The person bringing the issue forward must follow through with evidence that supports their position.
For families navigating probate or trust disputes, this standard means that thorough documentation, clear records, and well-drafted estate planning documents carry real weight in court.