What is the burden of proof?
Burden of proof is the obligation of a party to prove its claims or defenses to the required standard in a case.
The burden of proof is the duty to prove facts, usually by a preponderance or beyond reasonable doubt.
Where the word "Burden Of Proof" comes from
Burden of proof comes from the ancient principle that the party asserting a claim must prove it. It has two parts: the burden of production, which is the duty to present evidence, and the burden of persuasion, which is the duty to convince the fact-finder to the required degree.
Why Burden Of Proof matters
It decides who wins when evidence is close. In civil cases plaintiff must prove claim by preponderance of evidence, while in criminal cases state must prove guilt beyond reasonable doubt, and difference reflects stakes of each case.
Common confusion about Burden Of Proof
Burden is not same in every case. Civil and criminal cases use different standards, and burden can shift for certain defenses, so party and standard depend on claim, defense, and stage of case.
A real-world example of Burden Of Proof
A homeowner files a flood claim with an insurer that denies coverage, arguing the damage was caused by gradual seepage rather than a sudden flood. The homeowner must show, by a preponderance of the evidence, that the policy's flood language covers what happened, which is a lower hurdle than the criminal standard.
A worked example of Burden Of Proof
A policyholder sues an insurer over a refused homeowners claim, and the central fight is the standard of persuasion. Policyholder must make coverage question more likely true than not, so if evidence on both sides is evenly balanced, claim fails. In a separate criminal trial, same physical facts would require state to eliminate reasonable doubt, a far heavier load, which is why identical dispute can end differently depending on which burden applies and which party carries it.
How Burden Of Proof works in practice
Know which party bears burden and to what standard, because it shapes how you present case. If you bear burden, marshal strongest evidence on each element and explain why it meets standard. If you do not, focus on creating doubt or pointing to gaps in other side's proof, because burden is often deciding factor in close cases. In a trial, judge instructs jury on burden before deliberation, and verdict form reflects it, so parties' closing arguments are built around who must persuade whom and by how much, which is why experienced litigators plan their cases around the burden from the very first filing.
Questions about Burden Of Proof
What standard applies to my case?
Civil usually preponderance; criminal requires more.
Who has the burden?
The plaintiff or prosecutor, generally.
What if proof is equal?
The party with the burden loses.
What is “beyond reasonable doubt”?
The high standard required to convict in criminal cases.