Finland's outgoing Prime Minister, Sanna Marin, has tendered her government's resignation to President Sauli Niinisto in Helsinki.

Finland's Prime Minister Sanna Marin, who lost a general election, said she would step down as Social Democratic Party leader and dismissed notions of any international postings.

Marin noted that she would not seek to continue as SDP leader at the forthcoming party conference in September.

The 37-year-old said she would continue as a lawmaker, despite speculation that she could be in the running for a top job at an international agency.

The outgoing Prime Minister hoped to live a calmer life, stressing that she would not seek the presidency when current head of state Sauli Niinisto's second and final term ends next year.

The biggest party in the parliament gets the first chance to form a government, which means conservative leader Petteri Orpo will have to decide whether to build a coalition with the SDP or the far-right Finns Party, which came in second.