In the Konstantinos Tsaldaris government from 1946–1947, he served as Minister for Public Works. In the 1950 general election, Gonatas' party first allied with Napoleon Zervas' National Party of Greece but when he was discredited for his collaboration with the Nazis, Gonatas decided to run in coalition with the Liberal Party. In this election, for the first time in his political career, Gonatas was not elected. He never sought public office again; continuing only to serve as former Prime Ministers did on the Crown Council advising the King until his death on March 29, 1966, in Athens.