Howard served the suspension Friday night as the 76ers beat the Orlando Magic to clinch the No. 1 seed in the Eastern Conference for the first time since 2001.
The one-game suspension will cost Howard $17,688, and the 76ers will get a tax variance credit of $8,844.
Howard's technical came with 10:19 left in the second quarter of a 106-94 loss to the Heat in Miami on Thursday night. Howard knocked forward Udonis Haslem to the floor while the two were going for a rebound. Haslem got up and followed Howard down the court and confronted him.
A player or coach is automatically suspended without pay for one game once he accumulates 16 technicals during the regular season. For every two additional technicals during the regular season, a one-game suspension without pay follows.
ESPN's Bobby Marks and The Associated Press contributed to this report.