After leading the Centre party to victory in the 2015 general election, Sipilä formed a centre-right coalition and was appointed prime minister by the Finnish Parliament on 29 May 2015.

[3] On 8 March 2019, Sipilä stated his intention to resign as prime minister, citing difficulties in reforming Finland's health care system.

[1] Sipilä's career started at Lauri Kuokkanen Ltd., first as a thesis worker and later as a product development manager.

[15] Sipilä's government struggled with Finland's poor economic performance,[16] caused according to Paul Krugman and others by the constraints of its eurozone membership and aftershocks from the European debt crisis,[17][18] but also by the decline of the paper industry, the fall of Nokia and a diminution in exports to Russia.

The Blue Reform members of the former Finns Party, including all ministers, remained in the government after the split.

[29] Due to the devastating defeat, Sipilä consequently announced that he would continue as the chairman only until Centre Party's next convention in September 2019.

[31][32][33] A Parliamentary Ombudsman later decided that Sipilä didn't face a conflict of interest over mine deal.

[34][35] However, it was later revealed that Sipilä had contacted Yleisradio in order to instruct them on how to report on the Talvivaara and Terrafame incidents, leading to suspicion that YLE had been politically pressured.

[12] The cost to bring power to his summer cottage seemed too high, and he became interested in wood gas.

First, he produced the electricity with wind power and with a diesel generator, but then he started building wood gas plants.

[39] This hobby was spun off into a company, Volter Oy, which produces wood gas power plants.

"Word of Peace", affiliated in North America with ALCA), a small Laestadian revivalist denomination within the state Lutheran church of Finland.

In 2018 he promised to compensate all climate change gas emissions from his air travel by cultivating trees with his own hands.