Jodo Shinshu is considered to have been founded in 1247, when Shinran finished writing "Kenjodo shinjitsu kyogyo shomonrui" (Kyogyo shinsho), but in reality it was after Shinran's death that Jodo Shinshu was officially recognized.
浄土真宗の立教開宗の年は、『顕浄土真実教行証文類』（教行信証）が完成した寛元5年（1247年）とされるが、定められたのは親鸞の没後である。