Because the May 2023 Greek legislative election did not result in the formation of a new government, President Katerina Sakellaropoulou appointed him to be the caretaker Prime Minister of Greece on 25 May 2023, becoming the 100th holder of that office.
He served as caretaker prime minister until the formation of the new government of Kyriakos Mitsotakis after the June 2023 election.
[1] He was designated for the chairmanship of the Greek Court of Audit on 4 November 2019,[2][3] serving a non-renewable four-year term as per the Constitution of Greece.
Ioannis Sarmas completed his legal studies at the National and Kapodistrian University of Athens from 1975 to 1979, graduating with distinction as the top student in his class.
He also earned a doctorate in the law of individual rights from the same university (1981-1985), achieving the highest distinction, très honorable.