How the Appeals Process Works: What an Appeal Can Change
An appeal is a request that a higher court review whether a trial court or agency made a legal error. Appellate courts generally correct mistakes in how the law was applied; they do not retry facts or hear new evidence. Deadlines are short and set by court rule, and missing one usually ends the appeal.
An appeal is a request that a higher court review the record of a lower court or agency to decide whether a legal error occurred. It is not a second trial. The appellate court reads the same transcripts and exhibits the lower court had, hears from both sides, and issues a written decision. Because review is confined to that record and to questions of law, the possible outcomes are limited and defined rather than open-ended.
That limit is the most useful thing to understand about the process. Appellate courts do not take new testimony, do not accept new evidence, and do not substitute their own view of witness credibility for the trial judge's or jury's. What they can do is conclude that a rule was applied incorrectly, that evidence was admitted or excluded improperly, that a jury instruction misstated the law, or that a sentence exceeded what the law allows, and then order a remedy.
This page describes how appellate review generally works in the United States, using the federal system as the main illustration. State systems follow similar logic under their own rules. The Legal Information Institute maintains a plain-language overview of the term itself.
What an appeal can change
An appellate court's authority depends on the type of error it finds and the remedy the law attaches to it. Typical results include:
- Affirmance. The lower court's decision stands, which is a common outcome because the appealing party carries the burden of showing error.
- Reversal. The appellate court concludes the judgment cannot stand as a matter of law.
- Remand. The case returns to the lower court with instructions, which may be to hold a new trial, reconsider a sentence, or correct a specific ruling.
- Partial reversal. One count among several, or one portion of a sentence, may be set aside while the rest stands.
- Vacatur. The judgment is set aside, sometimes without further proceedings when the evidence was legally insufficient.
Appeals also produce published opinions that interpret statutes and rules, so a single decision can shape how the law is applied in later cases.
What an appeal cannot change
- It cannot introduce new evidence, new witnesses, or testimony that was never part of the lower court record.
- It cannot ask the appellate court to re-weigh evidence or decide which witness was more believable.
- It cannot succeed merely because the appellate judges would have sentenced the person differently, if the sentence fell within the range the law permitted.
- It cannot revisit a discretionary charging decision by a prosecutor unless a specific legal claim is available.
- It cannot automatically pause the judgment. Whether a sentence or other consequence is stayed during the appeal depends on court rules and the type of case.
Claims that depend on facts outside the trial record, including some claims that trial counsel was ineffective, are often raised through separate post-conviction proceedings instead of a direct appeal, because they require evidence that must first be developed. The Legal Information Institute describes habeas corpus as one such route.
Deadlines and the notice of appeal
Every appeal begins when a party files a notice of appeal, a short document filed with the clerk of the court that entered the judgment. The deadline is fixed by court rule. In the federal system the period is set by the Federal Rules of Appellate Procedure, and it is measured from entry of the judgment or from the order being challenged. Criminal and civil cases run on different clocks, and certain motions filed after judgment can affect when the time begins to run.
Courts have only narrow authority to extend the time to appeal, and a late notice generally ends the appeal before the merits are reached. Because the rules differ between federal and state courts and between categories of cases, the controlling rule is the one published by the court that issued the judgment. The U.S. Courts publishes an overview of how the federal system is organized and which court reviews which decisions.
How a federal appeal usually proceeds
- Notice of appeal. Filed with the district court clerk, this filing moves the matter to the appellate court.
- Record and transcripts. The appellant arranges for the trial transcript and assembles the record on appeal.
- Briefing. The appellant files an opening brief identifying the claimed errors; the appellee files a response; the appellant may file a reply.
- Oral argument. A panel of judges may hear argument, although some cases are decided on the briefs alone.
- Decision. The court issues an opinion or order, accompanied by a judgment reflecting the outcome.
- Rehearing. A party may ask the same court to reconsider, typically through a petition for panel rehearing or rehearing en banc.
- Further review. A petition for a writ of certiorari asks the Supreme Court of the United States to review the case.
Standards of review
Appellate judges apply different levels of deference depending on the issue. The label attached to a claim, called the standard of review, often matters as much as the underlying facts.
- De novo. The appellate court decides the legal question without deference to the lower court. Statutory and constitutional questions often fall here.
- Abuse of discretion. The court asks whether a discretionary ruling fell outside the range of reasonable choices. Many evidentiary and sentencing rulings are reviewed this way.
- Clearly erroneous. A deferential standard for findings of fact made by a judge without a jury.
- Harmless error and plain error. A genuine mistake may not change the outcome if the reviewing court concludes it did not affect the result, or if no objection was made when the issue first arose.
Stages of a federal appeal at a glance
| Stage | What happens | Party responsible |
|---|---|---|
| Notice of appeal | Formal filing that invokes appellate jurisdiction | Appellant |
| Transcript order | Trial record is prepared for review | Appellant |
| Record on appeal | Documents and exhibits are transmitted to the appellate court | District court clerk |
| Opening brief | Written argument identifying claimed errors | Appellant |
| Response brief | Answer to the claims raised | Appellee |
| Decision | Opinion or order affirming, reversing, or remanding | Appellate panel |
Fees, transcripts, and appointed counsel
An appeal carries its own costs: a filing fee, the cost of preparing the trial transcript, and the expense of filing briefs. A person who cannot pay may ask the court for permission to proceed without prepaying fees, a status commonly called in forma pauperis. In federal criminal cases, a defendant who qualified for appointed counsel at trial generally remains eligible for appointed counsel on a first appeal. The U.S. Courts outlines how criminal cases move through the federal system.
Where this varies
The framework described here is general, and the details differ by state, court, and facility.
- Deadlines. Each court system sets its own time to file a notice of appeal, and some use different periods for criminal, civil, and administrative matters.
- Court structure. Some states have an intermediate appellate court and a high court; others route certain appeals directly to the state supreme court or to a specialized court.
- Preservation of error. Whether an issue had to be objected to at trial, and how strictly that requirement is applied, varies widely.
- Post-conviction routes. The availability and timing of collateral review, such as state habeas corpus or a motion to vacate a federal sentence, differs by jurisdiction.
- Access while in custody. Facilities set their own rules for law library access and legal mail, and courts have their own rules for when a filing by someone in custody is treated as submitted.
Review after the appeal
When the appellate court decides, the direct appeal is ordinarily finished. Further review usually requires a discretionary petition, such as a petition for a writ of certiorari to the Supreme Court of the United States. Separate post-conviction proceedings, addressed to the trial court rather than the appellate court, are a different mechanism governed by their own rules and time limits.
Browse the directory
Frequently asked questions
Does winning an appeal mean a new trial?
Not necessarily. An appellate court may affirm, reverse, remand for a new trial or resentencing, or set aside part of a judgment. A new trial happens only when the court reverses and the remedy it orders calls for further proceedings in the lower court.
Can new evidence be presented on appeal?
Generally no. Appellate review is limited to the record developed in the lower court, which means transcripts, exhibits, and filings already made. Facts that were never presented there are usually outside the appellate court's reach and must be raised through a different proceeding.
What happens if the deadline to file an appeal passes?
The appeal is generally dismissed and the lower court's judgment becomes final. Courts have only narrow authority to extend the filing period, and the rules that permit relief in specific circumstances are published by the court that issued the judgment.
Does filing an appeal stop a sentence from being carried out?
Not automatically in every situation. Whether a sentence or another consequence is paused while the appeal is pending depends on the rules of the court and the type of case, and a party may need to request a stay separately.
What is the difference between a direct appeal and post-conviction relief?
A direct appeal challenges the judgment using the trial record and goes to a higher court. Post-conviction relief is a separate proceeding, often filed in the trial court, that can raise claims requiring facts developed outside that record, such as certain claims about trial counsel.
Who decides which issues an appellate court will consider?
The parties define the issues in their briefs, but the court controls what it reviews. Issues not properly raised or preserved may be treated as waived, and the standard of review applied to each claim affects how much deference the lower court receives.
Written and reviewed by the InmateSearch.co Editorial Team. This page describes how the process generally works and is not legal advice.
Last reviewed and updated: