Burden of Proof

Florida legal definition under F.S. 90.301

Verified by Licensed Bail Bond ProfessionalsLast updated: March 2026
Definition: The obligation to prove assertions in court. Criminal cases: beyond a reasonable doubt (prosecution). Pretrial motions: preponderance of evidence. Insanity defense: clear and convincing evidence (defense). Civil cases: preponderance of evidence.

Category: Evidence · Statute: F.S. 90.301 · Source: Florida Legislature

Understanding Burden of Proof in Florida

In Florida’s legal system, the burden of proof is the mandatory obligation placed on a party to present sufficient evidence to establish a factual claim in a court of law. Under Section 90.301 of the Florida Evidence Code, a rebuttable presumption may shift the burden of producing evidence, but the ultimate burden of persuasion remains fixed on the party asserting the claim. In criminal prosecutions, this burden rests entirely on the state. Because of the constitutional presumption of innocence, a defendant is never required to prove their innocence; instead, the prosecution must prove every element of the charged offense beyond a reasonable doubt to secure a conviction.

While the prosecution bears the highest standard of proof at trial, different legal standards apply depending on the stage of the proceedings and the specific issues raised. For instance, if a defendant asserts an affirmative defense, such as the insanity defense under Florida Statute Section 775.027, the burden shifts to the defense to prove that insanity by clear and convincing evidence. For pretrial constitutional motions, such as a motion to suppress evidence seized during an unlawful search, the moving party generally must establish the violation by a preponderance of the evidence, which simply means the claim is more likely true than not.

The Burden of Proof in Florida Bail Hearings

During a Florida pretrial detention or Arthur hearing, the burden of proof plays a critical role in determining whether a defendant can secure bail. To deny pretrial release for a non-capital offense, the state must prove by clear and convincing evidence that the defendant poses a threat to the community and that no release conditions can reasonably assure public safety. For capital offenses or crimes punishable by life imprisonment, the state must meet the "proof is evident, presumption great" standard—which is higher than clear and convincing evidence—to deny bail altogether.

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