Maher now returns to China for the second time in his career after he led the women's side to a fourth-place finish at the Beijing Games in 2008.
British Basketball's Performance Director, Chris Spice commented: "We are very sad to have lost the services of our Olympic women's coach Tom Maher who has recently accepted the Head Coach role with China through to Rio 2016. Unfortunately we were not able to offer anything beyond a one-year contract and we fully understand his decision. We wish Tom every success for his next challenge and we want to thank him for his unwavering efforts over the past three years with the GB national women's team.
"British Basketball hopes to be in a position to announce his successor in the coming weeks."