New Red Devils boss David Moyes is to send a select XI to the Liberty Stadium on Tuesday, August 13 to mark the occasion.
Tate started his career at Old Trafford but joined Swansea for the first of two loan spells in 2002, before making the move permanent in 2004.
The 30-year-old is one of a select band of players, along with Garry Monk and Leon Britton, to represent the club in all four divisions.
Tate said: "I'm extremely grateful to the club and Manchester United for granting me this testimonial.
"I spoke to Sir Alex Ferguson before he announced his retirement and he was really supportive."
He added: "I had some great times at Old Trafford as a schoolboy, apprentice and a young professional.
"It proved the perfect grounding for me to develop my career at Swansea where the fans have always been fantastic to me. I hope it will be a great night.''
Source: PA
Source: PA