The statute of limitations for fraud depends on which track the case is on. Civil fraud suits between private parties usually have to be filed within two to six years under state law. Most federal criminal fraud charges must be brought within five years, with some categories stretching to seven or ten. Tax fraud, securities fraud, and False Claims Act cases each run on their own clocks, and a few situations carry no deadline at all.
Civil Fraud Lawsuits Between Private Parties
When one person or business sues another over a fraudulent act, state law sets the filing deadline. Those deadlines run from as little as two years to as long as six years, depending on the state. Miss the window and the case gets dismissed on motion, no matter how strong the underlying evidence is.
When the Clock Starts: the Discovery Rule
Fraud is designed to stay hidden, and courts have long recognized that problem. Under the discovery rule, the clock doesn’t start when the fraud happens. It starts when you discover the fraud, or when a reasonable person in your situation would have discovered it.
Take an investment manager who fabricates account statements to cover up stolen funds. The client reviewing those statements has no obvious reason to suspect anything. The statute of limitations starts not when the money was first taken, but when the client learned about the theft or received information that should have prompted an investigation.
The discovery rule applies broadly to private civil fraud claims. It does not extend to government enforcement actions seeking penalties. In a 2013 decision, the Supreme Court held that when the SEC seeks civil fines for fraud, the five-year clock runs from when the fraud occurs, not when the agency discovers it.1Legal Information Institute (LII). Gabelli v. SEC
Fraudulent Concealment
A related doctrine, fraudulent concealment, can pause the clock when a defendant actively hides what they did. The discovery rule addresses fraud that is inherently hard to detect. Concealment addresses extra steps a wrongdoer took to cover their tracks, like destroying records, lying to investigators, or withholding information they had a duty to disclose. If a victim can show deliberate concealment through deceptive means, courts may toll the deadline until the concealment is overcome.
Federal Criminal Fraud
The federal government prosecutes fraud under dozens of statutes, and the deadline depends on the offense. The baseline is five years from the date the crime was committed.2Office of the Law Revision Counsel. 18 USC 3282 – Offenses Not Capital That window covers most common federal fraud charges, including mail fraud and wire fraud. Unlike civil cases, the criminal clock starts when the offense occurs, not when it’s discovered.
Ten Years for Financial Institution Fraud
Federal law doubles the window to ten years for fraud connected to financial institutions. The extended deadline covers bank fraud, along with mail and wire fraud when the offense affects a bank, credit union, or similar institution.3Office of the Law Revision Counsel. 18 USC 3293 – Financial Institution Offenses The “affects a financial institution” language reaches further than many defendants expect. If a wire fraud scheme caused losses to a bank even indirectly, the ten-year clock can apply.
Seven Years for Major Government Contract Fraud
Fraud targeting a federal government contract, grant, loan, or subsidy worth $1 million or more carries a seven-year statute of limitations under the Major Fraud Act.4Office of the Law Revision Counsel. 18 USC 1031 – Major Fraud Against the United States It applies specifically to fraud against the federal government rather than private victims.
Tax Fraud
Tax fraud follows its own set of rules. The IRS has separate deadlines for auditing a return, assessing additional taxes, and pursuing criminal charges, and each shifts depending on how serious the underlying conduct is.
Civil Assessment
The IRS normally has three years from the date you file a return to assess additional taxes. That window expands to six years if you underreport gross income by more than 25 percent, or if you fail to report more than $5,000 in income tied to foreign financial assets.5Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection
If you file a fraudulent return with intent to evade taxes, there is no time limit. The IRS can audit and assess additional taxes at any point, whether five years later or fifty. The same unlimited window applies if you never file a return at all.5Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection
Criminal Tax Prosecution
When the IRS refers a case for criminal prosecution, the deadline is six years rather than the five-year default. That window covers tax evasion, filing a fraudulent return, helping someone else prepare a false return, and willfully failing to file or pay.6Office of the Law Revision Counsel. 26 USC 6531 – Periods of Limitation on Criminal Prosecutions For tax offenses that don’t involve fraud, the deadline drops to three years.
Securities Fraud
Securities fraud runs on two tracks with different deadlines.
An investor suing over fraud in the purchase or sale of securities has the earlier of two deadlines: two years after discovering the facts behind the violation, or five years after the violation itself.7Office of the Law Revision Counsel. 28 USC 1658 – Time Limitations on the Commencement of Civil Actions The five-year outer boundary is absolute. Even if you couldn’t have discovered the fraud sooner, you’re out once five years pass from the date of the violation.
SEC enforcement actions seeking civil penalties follow the general five-year federal deadline, and the discovery rule does not apply.1Legal Information Institute (LII). Gabelli v. SEC The SEC can still seek other relief like injunctions and disgorgement outside this window in certain circumstances, but civil monetary penalties must be pursued within five years.
False Claims Act and Whistleblower Suits
The False Claims Act lets private individuals sue on behalf of the federal government against people or companies that have defrauded government programs. These qui tam actions are common in healthcare billing, defense contracting, and grant fraud, and they run on a dual deadline.
The baseline is six years from the date the fraud was committed. If the government didn’t learn the key facts in time, the deadline extends to three years after the responsible government official knew or should have known the material facts, with an absolute outer limit of ten years from the violation. The case must be filed by whichever of these two deadlines comes later.8Office of the Law Revision Counsel. 31 USC 3731 – False Claims Procedure A qui tam case can sometimes be filed as late as ten years after the fraud, if the government only recently became aware of it.
When the Clock Stops or Never Starts
Several doctrines can pause, extend, or eliminate a statute of limitations. They can revive cases that look time-barred on the surface.
Fleeing From Justice
Federal law is blunt: no statute of limitations applies to anyone fleeing from justice.9Office of the Law Revision Counsel. 18 USC 3290 – Fugitives From Justice If a fraud defendant leaves the jurisdiction to avoid prosecution, the clock stops until they’re back within reach. A defendant who flees the country for a decade returns to find the statute of limitations exactly where they left it.
Wartime Suspension
For fraud against the federal government, the statute of limitations is suspended during periods of war or congressionally authorized military action, and the suspension lasts until five years after hostilities officially end.10Office of the Law Revision Counsel. 18 USC 3287 – Wartime Suspension of Limitations It covers fraud connected to military contracts, government property, and procurement, and the open-ended nature of modern military authorizations means the suspension can last far longer than most people expect.
Continuing Offenses
A fraud scheme that plays out over years raises a hard question: does the clock start when the scheme begins, when each fraudulent act occurs, or when the scheme finally ends? Courts don’t agree. For mail fraud and wire fraud, most courts treat each mailing or transmission as a separate offense, and the clock runs from that specific act. For bank fraud and healthcare fraud, some courts treat the entire scheme as the relevant unit, meaning the clock doesn’t start until the last act in furtherance of the scheme. That distinction can add years to the prosecution window.
No Deadline at All
Federal law imposes no statute of limitations on crimes punishable by death.11Office of the Law Revision Counsel. 18 USC 3281 – Capital Offenses Fraud itself doesn’t carry the death penalty, but if a fraud scheme directly causes a death, prosecutors could pursue charges like murder or felony murder, which have no filing deadline. On the civil side, the IRS has no time limit for assessing taxes on fraudulent returns.5Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection
What Happens if the Deadline Passes
The effect of missing a statute of limitations is permanent. In civil cases, the defendant can move to dismiss and the judge must grant it once the expiration is established. In criminal cases, charges filed after the deadline are invalid. Evidence doesn’t fix it.
The trap is picking the wrong clock. A victim of investment fraud might assume they have six years under a state civil fraud statute, not realizing the federal securities fraud deadline of two years after discovery could expire first. Someone who learns their accountant filed fraudulent returns might focus on the three-year IRS audit window without knowing the fraud exception eliminates that deadline entirely. The type of fraud determines the deadline, so identifying the right claim early is what protects the right to bring it.