Turnbull tweets congratulations to ScoMo

Malcolm Turnbull has tweeted his congratulations to Scott Morrison for his unexpected federal election win.

Malcolm Turnbull has tweeted his congratulations to Scott Morrison for his federal election win. (AAP)

Former prime minister Malcolm Turnbull has congratulated his successor Scott Morrison for his unexpected win in Saturday's federal election.

"Congratulations @ScottMorrisonMP on an outstanding personal victory," Mr Turnbull tweeted on Sunday.

"Australians have once again backed the Coalition to deliver a strong economy, more jobs & lower taxes."

Vote counting will continue but Labor conceded on Saturday night it will not be able to form government.