The central question
A motion under 28 U.S.C. § 2255 allows a person in federal custody to ask the sentencing court to vacate, set aside, or correct a sentence on specified grounds. Those grounds include a sentence imposed in violation of the Constitution or federal law, a lack of jurisdiction, a sentence exceeding the lawful maximum, or another defect that makes the judgment subject to collateral attack. Section 2255 is not a second direct appeal, and it is not a general opportunity to relitigate every disagreement with the trial or sentence.
The first practical question is often timing. Section 2255(f) establishes a one-year limitation period, but the statute says the period runs from the latest of four possible dates. That language makes a correct chronology essential. The date someone learned about § 2255, obtained a form, entered a prison law library, or decided to challenge the case is not itself one of the statutory triggers.
The four statutory starting points
The four triggers address different case histories. The first is the date the judgment of conviction becomes final. The remaining three apply only when their specific requirements are met. They do not operate as general extensions and should not be assumed from the label placed on a claim.
- Final judgment: the date the judgment becomes final after direct-review opportunities conclude. The calculation depends on what appeal was taken, what happened on appeal, and whether further review was sought.
- Government impediment: the date an unlawful governmental obstacle preventing the filing is removed, when the applicant was actually prevented from filing by that impediment.
- Newly recognized right: the date the Supreme Court initially recognizes the asserted right, but only if the right has also been made retroactively applicable to cases on collateral review.
- New facts: the date the facts supporting the claim could have been discovered through due diligence—not necessarily the date the applicant personally happened to discover them.
Why new evidence does not automatically restart the year
The fourth trigger is frequently misunderstood. A new affidavit, recantation, laboratory result, disciplinary record, or previously unseen document may be important, but the calendar question is not simply when the item arrived. Courts may ask when the underlying facts could have been discovered through reasonable diligence, what steps were taken to obtain them, whether the information was already known in another form, and whether the new material actually supports the constitutional claim being asserted.
A records log can therefore matter. Requests, denials, follow-up letters, disclosure dates, envelopes, declarations, and explanations of who possessed a record may help establish the discovery timeline. Preserving those materials does not prove timeliness or the underlying claim, but failing to preserve them can make both questions harder to evaluate.
A new Supreme Court decision has its own trap
Section 2255(f)(3) is also narrower than it first appears. The triggering decision must come from the U.S. Supreme Court, the asserted right must actually be newly recognized there, and that right must be retroactively applicable on collateral review. A new court-of-appeals opinion, a favorable dissent, a pending petition, or a decision applying an old rule in a new factual setting does not automatically satisfy the subsection.
The statute measures from the date the Supreme Court initially recognizes the right, not necessarily the later date on which another court declares the right retroactive. Waiting for a retroactivity ruling can therefore consume part or all of the year. This is one reason a developing Supreme Court issue should be reviewed promptly rather than after headlines describe the law as settled.
Why filing an incomplete motion can create a second problem
The official AO 243 form instructs applicants to state every ground for relief and the facts supporting each ground. That warning reflects more than formatting. Later attempts to add claims may face limitation, amendment, procedural-default, waiver, or second-or-successive restrictions. Under § 2255(h), a second or successive motion generally requires authorization from the court of appeals and must fit one of two narrow categories involving qualifying newly discovered evidence or a qualifying new rule of constitutional law made retroactive by the Supreme Court.
A rushed placeholder motion may preserve less than the filer expects. A motion that names a doctrine without the supporting facts may not fairly present the claim, and an amendment filed after the limitation period may raise a separate question about whether it relates back to the timely pleading. At the same time, delaying a filing while waiting for a perfect record can create a different risk. The right approach depends on the actual deadline, available facts, missing records, and governing law in the circuit.
Practical review points
A useful preliminary review should build a date chart covering the judgment, amended judgments, direct appeal, rehearing, certiorari activity, later discovery, record requests, alleged governmental interference, and any Supreme Court decision on which the person relies. It should then match each proposed claim to its supporting facts and separately analyze the possible trigger for that claim.
The motion must ordinarily be filed in the federal court that imposed the sentence, and the Rules Governing Section 2255 Proceedings control important parts of the process. If relief is denied, an appeal generally requires a certificate of appealability based on a substantial showing of the denial of a constitutional right. These procedural requirements reinforce the same point: timing, forum, claim development, and appellate preservation should be evaluated together—not as separate afterthoughts.
Limits and caution
This overview cannot calculate a deadline for any individual case. Finality rules, prison-mailbox issues, equitable tolling, actual-innocence arguments, plea and appeal waivers, procedural default, amended judgments, prior collateral filings, and circuit precedent may materially change the analysis. State prisoners generally proceed under 28 U.S.C. § 2254 and face a related but distinct statutory scheme.
Anyone evaluating federal post-conviction relief should avoid relying on an estimated release date, an informal deadline supplied by another incarcerated person, or the assumption that a pending records request stops the clock. The safer course is a documented, claim-specific review using the judgment, appellate docket, available record, and current law. This article provides general educational information and is not a deadline calculation or legal advice.