Call Today! Free Immediate Response (818) 781-1570

CRIMINAL LAW BLOG

Classification System for Federal Felony Offenses

Posted by Dmitry Gorin | Oct 14, 2025

The federal felony classification system, a pivotal aspect of federal criminal law, categorizes crimes from Class A (most serious) to Class E (least serious) based on the maximum potential prison sentence. 

This system is of utmost importance as it provides a clear and consistent framework for determining the severity of offenses and their corresponding penalties. For instance, Class A felonies can lead to life imprisonment or even death, while Class E felonies carry penalties of more than one year but less than five years in prison.

Classification System for Federal Felony Offenses
Federal felony offenses are classified on a scale from Class A to Class E based on the maximum potential prison term.

Section 3559 of 18 U.S. Code, a crucial part of the federal felony classification system, details the seriousness of an offense and its corresponding sentencing guidelines.  

This section is the backbone of the system, ensuring that federal misdemeanor offenses are accurately classified into their respective categories (i.e., Class A, Class B, and Class C misdemeanors).

As noted, a Class A felony is the most severe type of federal felony. These offenses typically involve violent crimes, and the maximum term of imprisonment is life or, for the most severe crimes, death.

Class B felonies typically involve serious crimes such as drug trafficking and are punishable by twenty-five years or more imprisonment. Class C felonies are punishable by imprisonment for at least 10 years. A Class D felony is punishable by at least five years but less than ten years' imprisonment.

Class E felonies are still serious, but the least severe in terms of potential incarceration.  They are federal crimes that can be punished with imprisonment for more than one year or less than five years.

What is the Background of This Law?

The current classification system for federal crimes, which dates back to efforts to standardize and streamline the United States' sentencing process, has undergone significant evolution.

Federal Statutes

In the past, federal crimes were categorized without a unified structure, leading to inconsistencies in sentencing outcomes. The system we have today is a result of these efforts and the pivotal moment in federal sentencing history, the Sentencing Reform Act of 1984.

It introduced the Federal Sentencing Guidelines and created a framework for classifying offenses based on their severity, significantly shaping and evolving the federal criminal justice system.

The Act, which aimed to enhance fairness and transparency in the judicial process, achieved this by ensuring that similar crimes received comparable penalties, while also taking into account the nature and circumstances of each offense. This has significantly bolstered the integrity and trust in the federal criminal justice system.

The classification system enabled more equitable and predictable sentencing through a systematic approach, strengthening the integrity of the federal criminal justice system and informing the public about the process, thereby fostering trust in the legal system. The categories are as follows:

  • Class A Felonies: Maximum of life imprisonment or death
  • Class B Felonies: Maximum of 25 years or more
  • Class C Felonies: Maximum of 10-25 years
  • Class D Felonies: Maximum of 5-10 years
  • Class E Felonies: Maximum of 1-5 years

What Does 18 U.S.C. 3559 Say?

18 U.S. Code § 3559 - Sentencing classification of offenses says

"(a) Classification.—An offense that is not specifically classified by a letter grade in the section defining it is classified if the maximum term of imprisonment authorized is—

(1) life imprisonment, or if the maximum penalty is death, as a Class A felony;
(2) twenty-five years or more, as a Class B felony;
(3) less than twenty-five years but ten or more years, as a Class C felony;
(4) less than ten years but five or more years, as a Class D felony;
(5) less than five years but more than one year, as a Class E felony;
(6) one year or less but more than six months, as a Class A misdemeanor;
(7) six months or less but more than thirty days, as a Class B misdemeanor;
(8) thirty days or less but more than five days, as a Class C misdemeanor; or
(9) five days or less, or if no imprisonment is authorized, as an infraction.

(b) Effect of Classification.—
Except as provided in subsection (c), an offense classified under subsection (a) carries all the incidents assigned to the applicable letter designation, except that the maximum term of imprisonment is the term authorized by the law describing the offense."

What are Class A Felonies?

Class A felonies are the most severe category of federal crimes. They typically involve acts that result in extreme harm or pose significant threats to national security and public safety. The penalties for Class A felonies can include life imprisonment or even the death penalty.

Examples of Class A Felonies include first-degree murder, terrorist acts, large-scale drug trafficking operations, human trafficking of minors, and aggravated kidnapping that has as its elements the abduction, restraining, confining, or carrying away of another person by force or threat of force.

What Are Class B Felonies?

Class B felonies often involve significant harm or potential for harm, but do not reach the same severity level as those in Class A. The maximum sentence for these crimes is 25 years or more, but less than life imprisonment.

Examples of Class B Felonies include second-degree murder, arson, drug trafficking, and large-scale fraud, such as securities fraud involving substantial money.

What Are Class C Felonies?

Class C felonies encompass a broad spectrum of serious but less severe offenses, falling between Class A and Class B felonies. These crimes can involve moderate levels of harm or significant financial impact—maximum penalties for Class C offenses range from 10 to 25 years in prison.

Examples of Class C Felonies include robbery, burglary, counterfeiting, drug trafficking involving smaller quantities, embezzlement of larger sums of money, and voluntary manslaughter.

What Are Class D Felonies?

Class D felonies encompass offenses that still have considerable seriousness but are generally less impactful than those classified as Class A, B, or C. These crimes may involve lower levels of harm or smaller financial losses. They face a maximum penalty of 5 to 10 years in prison.

Examples of Class D Felonies include lesser degrees of drug offenses (possession with intent to distribute), involuntary manslaughter, theft of lower-value property, and some types of white-collar crimes.

What Are Class E Felonies?

Class E felonies represent the least severe category of federal felonies. While still considered serious crimes, they typically involve minimal physical harm or lower-value financial losses compared to higher classes. Class E felonies carry a maximum penalty of 1 to 5 years in prison. Anything less than one year counts as a misdemeanor.

Examples of Class E Felonies include simple possession of controlled substances (without intent to distribute), low-level financial fraud, certain regulatory violations or minor environmental law breaches, assaulting a federal officer, and other non-violent, low-level offenses.

What Are Related Federal Statutes? 

18 U.S. Code Chapter 227 Sentences, Subchapter A General Provisions has several related federal laws related to the classification system, such as the following:

  • 18 U.S.C. 3551 - Authorized sentences.
  • 18 U.S.C. 3552 - Presentence reports.
  • 18 U.S.C. 3553 - Imposition of a sentence.
  • 18 U.S.C. 3554 - Order of criminal forfeiture.
  • 18 U.S.C. 3555 - Order of notice to victims.
  • 18 U.S.C. 3556 - Order of restitution.
  • 18 U.S.C. 3557 - Review of a sentence.
  • 18 U.S.C. 3558 - Implementation of a sentence.
  • 18 U.S.C. 3559. Sentencing classification of offenses.

18 U.S. Code Subchapter B, probation, includes the following federal laws:

  • 18 U.S.C. 3561 - Sentence of probation.
  • 18 U.S.C. 3562 - Imposition of a sentence of probation.
  • 18 U.S.C. 3563 - Conditions of probation.
  • 18 U.S.C. 3564 - Running of a term of probation.
  • 18 U.S.C. 3565. Revocation of probation.
  • 18 U.S.C. 3566 - Implementation of a sentence of probation

18 U.S. Code Subchapter C, Fines, includes the following federal laws:

  • 18 U.S.C. 3571 - Sentence of fine.
  • 18 U.S.C. 3572 - Imposition of a sentence of fine and related matters.
  • 18 U.S.C. 3573 - Petition of the Government for modification or remission.
  • 18 U.S.C. 3574 - Implementation of a sentence of fine.

18 U.S. Code Subchapter D, Imprisonment, includes the following federal laws:

  • 18 U.S.C. 3581 - Sentence of imprisonment.
  • 18 U.S.C. 3582 - Imposition of a sentence of imprisonment.
  • 18 U.S.C. 3583 - Inclusion of a term of supervised release after imprisonment.
  • 18 U.S.C. 3584 - Multiple sentences of imprisonment.
  • 18 U.S.C. 3585 - Calculation of a term of imprisonment.
  • 18 U.S.C. 3586 - Implementation of a sentence of imprisonment.

For additional information, contact our federal criminal defense lawyers at Eisner Gorin LLP, located in Los Angeles, CA. 

Related Content

About the Author

Dmitry Gorin

Dmitry Gorin is a State-Bar Certified Criminal Law Specialist, who has been involved in criminal trial work and pretrial litigation since 1994. Before becoming partner in Eisner Gorin LLP, Mr. Gorin was a Senior Deputy District Attorney in Los Angeles Courts for more than ten years. As a criminal tri...

We speak English, Russian, Armenian, and Spanish.

Attorney Dmitry Gorin If you have one phone call from jail, call us! If you are facing criminal charges, DON'T talk to the police first. TALK TO US!

CALL TOLL-FREE
(818) 781-1570
Anytime 24/7

Menu