Judge T.S. Ellis III imposed the sentence Thursday, capping the only jury trial following indictments stemming from special counsel Robert Mueller's investigation.
A jury last year convicted Manafort on eight counts, concluding that he hid from the Internal Revenue Service millions of dollars he earned from his work in Ukraine.
Federal sentencing guidelines had called for a term of roughly 20 years, but few observers had expected he would receive a sentence that long.
Manafort still faces sentencing in the District of Columbia, where he pleaded guilty in a separate case connected to illegal lobbying.
