Maher was born and raised in Newfoundland, Canada. His parents recognized his musical talent, and he grew up taking piano lessons and immersing himself in a broad variety of music and playing in concert and jazz ensembles, singing in a choir, and playing in a garage rock band.^[2]
Maher received a scholarship from the Jazz Department at Arizona State University, where he studied Jazz Piano and got his music degree. He paid for his first three years of college by playing piano in a hotel.

Matt currently lives in Tempe, Arizona. He is involved in building community at Our Lady Of Mount Carmel parish. He married Kristin Fisher on September 10, 2010. Their son, Michael Conor, was born on August 1, 2011.