March 28 2024: Sam Bankman-Fried sentenced to 25 years in prison

In this courtroom sketch, Sam Bankman-Fried, second from right, stands while making a statement during his sentencing in Manhattan federal court, Thursday, March. 28, 2024, in New York. Crypto entrepreneur Bankman-Fried was sentenced Thursday to 25 years in prison for a massive fraud that unraveled with the collapse of FTX, once one of the world's most popular platforms for exchanging digital currency. Elizabeth Williams/AP

There is no possibility of parole in federal criminal cases, but Bankman-Fried can still shave time off his 25-year sentence with good behavior.

"SBF may serve as little as 12.5 years, if he gets all of the jailhouse credit available to him," Mitchell Epner, a former federal prosecutor, told CNN.

Federal prisoners generally can earn up to 54 days of time credit a year for good behavior, which could result in an approximately 15% reduction.

Since 2018, however, nonviolent federal inmates can reduce their sentence by as much as 50% under prison reform legislation known as the First Step Act.

Epner says the First Step Act was billed as a civil rights measure, to help minority offenders who committed non-violent drug-trafficking offenses.

"It has turned out to be an enormous boon for white-collar criminal defendants, who are already given much lower sentences ... than drug-traffickers," Epner added.

There is also a provision that allows a court to reduce a person’s sentence for extraordinary and compelling reasons, which are often medical, according to Jordan Estes, a former federal prosecutor who is now a partner at Kramer Levin.

"Since the pandemic, courts have been more willing to grant early release under this provision if the defendant has served a substantial portion of his or her sentence,” Estes said.