10:15 PM ET
The deal includes an early termination option after the fourth year.
Veteran center Robin Lopez also reached agreement with the Wizards on Friday.
At 6-foot-10, Bertans is a towering sharpshooter with excellent range.
A second-round pick in the 2011 NBA draft, he made his NBA debut with the San Antonio Spurs in the 2016-17 season. The Wizards acquired Bertans in a three-team trade before last season.
While he was always an accurate shooter with the Spurs, the “Latvian Laser” was unleashed in Washington. Bertans jacked 8.7 3-pointers in 29.3 minutes per game last season, knocking them down at a 42.4% clip.
Bertans, 28, is a threat to pull up from anywhere. He made 12 of 23 shots (52.2%) from at least 30 feet last season, according to Second Spectrum tracking. Out of the 230 individual seasons over the past seven seasons in which a player has attempted at least 10 shots from 30 feet out, Bertans is the only player to make more than half of them.