A 3-0 victory over the Vancouver Whitecaps saw the Red Bulls claim the sixth and final playoff place in the Eastern Conference.
Daniel Royer put the home side ahead in the 33rd minute at Red Bull Arena, finishing well after a smart Bradley Wright-Phillips dummy from a Sacha Kljestan pass.
Wright-Phillips doubled the lead before the hour-mark, clipping a finish past David Ousted after a wonderfully weighted pass from Tyler Adams.
Felipe Martins completed the victory in style, his 25-yard rocket sealing the result and ending the Red Bulls' eight-match winless league run.
Dallas edged into sixth spot in the Western Conference after coming from behind to draw 1-1 with the Colorado Rapids.
Atiba Harris' second-half goal cancelled out Stefan Aigner's opener at Dick's Sporting Goods Park.
Meanwhile, Sporting Kansas City jumped into second in the Western Conference despite being held to a 1-1 draw by Minnesota United, a result that still leaves a bit of work to do before the club can clinch a playoff spot.