burden of proof

The burden of proof answers a simple but powerful question: when two sides disagree, who has to do the convincing? The law's default is that the person making the claim must back it up — not the person denying it. If you say your neighbor borrowed your ladder and never returned it, it's on you to show it, not on your neighbor to prove they didn't. Think of it as a backpack: whoever carries it has to walk it all the way to the finish line, and if they can't, they lose.

But the burden has two layers — not just who must prove, but how convincingly. In a criminal trial, where someone's freedom is at stake, the prosecution must prove guilt 'beyond reasonable doubt' — so sure that no sensible person would hesitate. In an ordinary civil dispute, like a money quarrel, the bar is much lower: 'the balance of probabilities,' meaning simply more likely than not — if the evidence tips even slightly past the midpoint, that is enough. (Think of it loosely as just over 50/50; the test is really about which story is more believable, not about counting to a precise number.)

A common mix-up is to think the accused must prove their innocence. For the elements of the charge, they don't — the prosecution must prove guilt, so a defendant who stays silent and proves nothing on those points can still walk free. (Some specific defences are an exception: when an accused raises something like insanity, they may have to prove that defence themselves, though usually only on the lighter balance of probabilities.) But on the core question of guilt, if the accuser never carries its backpack to the line, the tie goes to the defendant.