Chauvin is currently serving a state sentence of more than 22 years for murdering Floyd.
The disgraced ex-cop had originally pleaded not guilty to the charges, but has reversed the plea after reaching a deal with US prosecutors.
The agreement will see Chauvin not face trial in January and may also result in him receiving a lighter federal sentence.
Chauvin was convicted by the state of Minnesota for both murder and manslaughter back in January.
He killed Floyd by kneeling on his neck for more than nine minutes… and failed to provide appropriate medical care during Floyd’s arrest.
The incident sparked global outrage after a bystander’s video footage of Chauvin leaning on Floyd went viral right around the world, sparking a wave of demonstrations against racial injustice and the police’s use of force.