Written & reviewed by External Legal AI · Published July 2, 2026
Civil vs. criminal, who's who in the courtroom, how a case actually moves from start to finish, and where the free help lives — in any state.
Almost everything that happens in an American courthouse runs on one of two tracks. A civil case is one person (or business) claiming another wronged them — an unpaid debt, a broken contract, an injury, a deposit that never came back. The person bringing the case is the plaintiff, the person being sued is the defendant, and what's at stake is money or a court order, never jail. A criminal case is different in kind: the government itself — through a prosecutor — accuses someone of breaking a criminal law. The victim may be a witness, but the case belongs to the state, and what's at stake is liberty: fines, probation, jail or prison, and a criminal record.
Because the stakes differ, the proof required differs too. A civil plaintiff generally has to show their version is more likely true than not — the 'preponderance of the evidence.' A prosecutor has to prove guilt 'beyond a reasonable doubt,' the most demanding standard in the law. The standards-of-proof section below walks the whole ladder.
The two tracks can run at the same time over the same event. Say a driver causes a crash while intoxicated and someone is hurt. The state can prosecute the driver for the DUI — that's the criminal case — while the injured person separately sues the driver for medical bills, lost wages, and pain and suffering — that's the civil case. They are two different cases, often in two different courtrooms, decided under two different standards, and one outcome does not decide the other: a driver acquitted of the crime can still lose the lawsuit.
Court proceedings involve a recurring cast, and knowing each person's job removes a lot of the mystery. The judge runs the courtroom and decides all questions of law; in a trial without a jury (a 'bench trial'), the judge decides the facts too. The jury — when there is one — decides only the facts: what happened, who is telling the truth, whether the burden of proof was met. Most cases, civil and criminal, resolve before any jury is ever seated.
The court clerk is the person self-represented people deal with most. The clerk's office files documents, keeps the case calendar (the 'docket'), and handles forms, filing fees, and fee-waiver applications. Clerks can explain how the process works but are not allowed to give legal advice — 'what form do I use' is fine; 'what should I argue' is not.
Most civil disputes start outside the courthouse with a demand — often a letter — saying what happened, what the sender wants, and what happens next if they don't get it. A large share of disputes end right there. When they don't, the plaintiff files a complaint (the document laying out the claims) with the court and pays a filing fee, and the defendant must be formally notified — 'served' — with the complaint and a summons. Service starts the defendant's clock: respond by the deadline, usually by filing an Answer, or risk losing automatically by default judgment.
Then comes the long middle. In discovery, each side can demand documents, send written questions to be answered under oath, and take depositions (recorded interviews under oath). Either side can file motions — requests for a ruling, up to and including a motion to throw the case out or decide it without trial. All along, the parties can settle, and the overwhelming majority of civil cases do: trials are the exception, not the rule.
If a case does go the distance, a judge or jury hears the evidence at trial and enters a judgment. Winning a judgment is not the same as being paid — collecting can mean garnishment or liens, and it is its own process. The losing side may be able to appeal, which asks a higher court to review legal errors, not to redo the facts. For the defendant's-eye view of the front end of this timeline, the Responding to a Lawsuit guide covers the summons-to-Answer stage in depth, and the small-claims guide covers the simplified version of this whole arc for smaller disputes.
A criminal case usually begins with an arrest or a citation, but the charging decision belongs to the prosecutor, who decides what — and whether — to charge. The first courtroom step is the arraignment: the charges are read, the defendant enters a plea (usually not guilty at this stage), and the court takes up release — bail, release on personal recognizance, or conditions like check-ins. The arraignment is also where a defendant who cannot afford a lawyer can ask for a public defender; the right to appointed counsel when jail is on the line is a bedrock feature of the criminal system.
Like civil cases, most criminal cases never reach trial. The prosecution must turn over its evidence, the defense can file motions — for example, to keep out evidence from an unlawful search — and along the way the two sides typically negotiate. In a plea bargain, the defendant pleads guilty to reduced charges or an agreed sentence recommendation; the vast majority of criminal convictions in the United States come from pleas, not verdicts. Some first-time or low-level cases can instead route into a diversion program, where completing classes or conditions ends in dismissal.
If the case does go to trial, the jury must be convinced beyond a reasonable doubt to convict. After a conviction comes sentencing — a separate hearing where the judge sets the punishment — and then the possibility of appeal. Years later, the story may have one more chapter: depending on the state and the offense, expungement or record sealing can limit who sees the record. The expungement guide covers how that generally works.
How much proof is enough? The answer changes with what is at stake, and the law arranges it as a ladder. The bottom rung is 'preponderance of the evidence,' the standard in most civil cases: the party with the burden must convince the fact finder that there is a greater than 50% chance the claim is true. Courts describe it as tipping the scale ever so slightly — which is why close civil cases can genuinely go either way.
The middle rung is 'clear and convincing evidence,' used for a smaller set of claims where the consequences are weightier — fraud, will contests, and similar disputes, with the exact list varying by state. It demands more than a bare tilt: the fact finder must be convinced the contention is highly probable.
The top rung is 'beyond a reasonable doubt,' required for every criminal conviction. The prosecution's evidence must leave the jurors firmly convinced of the defendant's guilt. It is deliberately the hardest standard in the law, because the government is trying to take away someone's liberty.
This ladder explains the split outcomes that puzzle people: the same event can end in a criminal acquittal and a civil judgment against the same person. 'Not guilty' means the state did not prove the charge to near-certainty — it does not answer the civil question of whether the harm was more likely than not the defendant's doing.
The United States runs two parallel court systems, and the overwhelming majority of cases — evictions, family matters, traffic, small claims, most contracts, most injuries, and most crimes — belong to the state courts. Every state builds its system a little differently, but the shape is the same: trial courts (often with a small-claims track for modest disputes), an appeals court, and a state supreme court.
Federal courts are courts of limited power. Broadly, they hear cases about federal law — federal statutes, the U.S. Constitution, bankruptcy — cases where the United States itself is a party, and certain disputes between citizens of different states when enough money is at stake (what lawyers call 'diversity jurisdiction'). Federal trial courts are called district courts, with circuit courts of appeals above them and the U.S. Supreme Court at the top.
For most people the question answers itself: the summons or notice names the court, and that court's rules and deadlines are the ones that govern. The distinction matters because the two systems run on different procedural rules and different response clocks — so the first fact to pin down about any case is which system it is in.
Nobody has to navigate this system cold, and much of the help is free. Most state court systems run self-help centers — staffed offices or extensive websites with plain-language explanations, form packets, and workshops for people handling a case without a lawyer. California's self-help portal is a good example of how deep these resources go, and nearly every state's court website has its own version. The clerk's office can point to the local one.
For civil problems, legal aid organizations provide free lawyers to people who qualify, usually based on income — LawHelp.org and the Legal Services Corporation's locator connect to the programs in each state, and our Legal Aid Eligibility tool can give a sense of whether you might qualify. For criminal charges, the public defender system exists precisely so that no one faces jail without counsel; asking the court for appointed counsel at arraignment is the standard route. And the quiet workhorse of the whole ecosystem is the law library: most counties maintain one that is open to the public, with librarians who help people find the statutes, court rules, and forms that apply to them.
Finally, a word on lawyers themselves: many offer free or low-cost initial consultations, and state and local bar associations run referral services. Even people who plan to represent themselves often find that one consultation — to sanity-check a plan or review a draft filing — changes how the rest of the case goes. Our Do I Need a Lawyer? tool walks through the factors that usually drive that decision.
More on this topic: the Going to Court hub
These guides are general information about the law, not legal advice for your specific situation. Talk to a licensed lawyer in your state before making decisions that affect your rights.