Michael Clarke will end his ODI career after the World Cup final, with Steve Smith expected to lead Australia's one-day side.
Sunday's World Cup final will be a changing of the guard for Australian cricket, with Michael Clarke to play his last ODI.
The situation is a little different to what happened in 2011, when Ricky Ponting stepped aside a week after Australia lost to eventual champions India in their World Cup quarter-final.
Clarke will still lead the Test side, while Cricket Australia (CA) is yet to confirm if Steve Smith is the new ODI skipper.
But when smoke rises at the MCG after either Australia or New Zealand's triumph, it will in effect become Smith's team.
Be it a title defence or quest for redemption, it will be Smith with his hand on the rudder and his mind on the 2019 World Cup.
"It really helped me having that (four years of) preparation ... to build my own team and set my own style up as a captain," Clarke told reporters on Saturday, when he also informed teammates, selectors and CA boss James Sutherland of his plans.
"That was really good preparation for this World Cup.
"The next Australian captain deserves the same opportunity."
Clarke, who turns 34 next week, suggested it wasn't fair to talk about who would take over.
The reality is there is one leading candidate, given current vice-captain George Bailey will be 36 when the 2019 tournament starts in England.
"Smithy has certainly matured as a player and as a person," Clarke said of the 25-year-old, who has been in fantastic from all summer.
Clarke's decision will ensure some of the focus is taken off the trans-Tasman tussle, but he was confident that wouldn't be the case for teammates.
"It needs to be about the team and I want it to be about the team," he said.
"I just said it to my teammates then ... it's not emotion, it's skill that helps you win major games and major tournaments.
"It's a very special event, but it's no more special because it's my last game."
Australia are expected to name an unchanged XI for the decider, while Brendon McCullum confirmed his side would do the same.
Australia had a short session on Saturday, when Adam Gilchrist joined them at training and passed on a few tips.
Clarke was full of respect for McCullum's mob, but declared "if we play our best, we can beat New Zealand tomorrow".
"The team has shown that they can handle pressure," Clarke said.
"We've had the expectation put on us from the first ball this tournament."
Earlier this year Clarke outlined hopes of playing in the 2019 World Cup, but once he realised that wasn't going to happen it made Saturday's announcement easy.
"I got back to my house at about 12.30 (after Thursday's semi-final against India) and (wife) Kyly was in bed," the right-hander said of when he made up his mind.
"That's when I spoke to her about it.
"There's no doubt I could keep playing (ODI cricket) for the next couple of years .. but I know I've made the right decision."
Sutherland was full of praise for Clarke, calling him one of Australia's "greats" and adding that his decision came as "something of a surprise".
"Michael leaves one-day cricket on his own terms," Sutherland said.