In early 2016 Tanner married Jade Roper whom he met on the 2nd season of Bachelor in Paradise. Their wedding was documented on a special episode of the 20th season of The Bachelor.
On March 8, 2017, the couple announced that they are expecting their first child. On May 4, 2017, they revealed that they are having a girl. Their daughter, Emerson Avery, was born on August 17, 2017.
On January 28, 2019, they announced that they are expecting their second child. On March 11, 2019, they revealed that they are having a boy. Their son, Brooks Easton, was born on July 29, 2019. Jade delivered him in the closet of the couple's home, only 75 minutes after her water broke.