It also resolved the outstanding question of whether Manafort would be sentenced before he had finished cooperating.
The judge also dismissed the outstanding 10 charges against Manafort without prejudice, meaning they could be filed again.
Rosenstein appointed Special Counsel Robert Mueller to lead the Russian Federation probe after Trump fired Federal Bureau of Investigation Director James Comey in May 2017.
Deputy Attorney General Rod Rosenstein on Wednesday defended Special Counsel Robert Mueller's investigation into the Trump campaign and its possible collusion with Russian Federation during the 2016 election, calling the probe "appropriate and independent".
Prosecutors and Manafort's lawyers agreed that would be acceptable, and Ellis set the February 8 sentencing date. But the jury was unable to reach a verdict on 10 other charges, including failure to register foreign bank accounts and conspiracy to commit bank fraud, so a mistrial was declared on those.
Manafort still may face an initial sentence of a decade or more in prison.
British tourist faces 10-year jail term for 'spray-painting' ancient Thai wall
The pair face up to 10 years in jail, a fine of up to one million baht ($30,656) or both, if found guilty, police said. Brittney and her friend Furlong Lee have admitted to defacing the ancient wall.
"I'm not the judge who ordered that confinement", Ellis said, but added he would keep those concerns in mind.
Manafort is the most senior of President Donald Trump's former aides to be convicted in Mueller's Russian Federation investigation.
Prosecutors say Manafort falsified the documents, leaving off millions in income.
Manafort was convicted in federal court in Alexandria on tax- and bank-fraud charges largely unconnected to his work on the Trump campaign.
Manafort in September pleaded guilty before a different judge in DC to two criminal counts of conspiracy and obstruction of justice, setting in motion his cooperation deal to assist the special counsel's probe into the 2016 presidential election.
He came to the court wearing a green prison jumpsuit, after the judge earlier this week rejected his request to appear in a suit. He was in a wheelchair and had a bandage on his right foot. He is experiencing a serious medical condition - inflammation that's related to his diet, a person familiar with Manafort's condition said.