A six-wicket haul for Trent Boult and a Ross Taylor century brought New Zealand a 24-run victory over Australia in the third one-day international Sunday to win the series 2-0.
Their masterclass saw New Zealand reclaim the Chappell-Hadlee Trophy while Australia lost their outright hold on the world number one ODI ranking.
They slipped to 118 points, equal with South Africa, who beat Sri Lanka in Johannesburg on Saturday to go 3-0 up.
South Africa will overtake Australia if they win the remaining two matches in that series.
New Zealand skipper Kane Williamson said the series victory was the right response to the "tough times" when the Black Caps were beaten 3-0 in Australia two months ago, and Taylor paved the way.
"The way he rotated the strike was superb," he said. "He faced hardly any dot balls, was able to build partnerships with the top order and the lower order."
New Zealand made 281 for nine, and although Australian captain Aaron Finch felt the target was gettable, they were bundled out for 257 with three overs remaining.
"New Zealand bowled fantastically well and when you see Ross Taylor get a hundred, we had a couple of guys get fifties and they don't win games at this level," Finch said. "The top order are there to make runs but it wasn't to be."
Williamson won the toss and had no hesitation in batting first on the Hamilton wicket, correctly forecasting it would slow up as the day wore on and Boult would come into his own.
But given the prime early batting conditions, New Zealand appeared to have under-performed despite Taylor's 107 off 101 balls and his century partnership with Dean Brownlie, who made 63.
With rankings and the series at stake after New Zealand won the first ODI by six wickets and the second was washed out, Finch and Shaun Marsh made a flying start to Australia's reply, averaging more than six an over.
They were particularly harsh on Tim Southee, whose opening four-over spell cost 30 runs, while new ball partner and man-of-the-match Boult had one for 10 at the time.
Marsh was first to fall, run out for 22, and Peter Handscomb was bowled first ball by Boult.
Finch and Travis Head continued the charge with a 75-run stand for the third wicket before New Zealand broke through with a second two-wicket burst.
Williamson had Finch caught by Boult at for 56 and Glenn Maxwell was caught behind off Mitchell Santner, leaving Australia 120 for four.
Head and Marcus Stoinis looked to have the run chase under control in a 53-run partnership, until Boult came back for his second spell and claimed Head for 53 and James Faulkner for nought in the space of four balls.
SCORES IN BRIEF
NEW ZEALAND: 281 for 9 in 50 overs (Brownlie 63, Taylor 107; Starc 3-63, Faulkner 3-59)
AUSTRALIA: 257 all out in 47 overs (Finch 56, Head 53; Boult 6-33)
Result: New Zealand won by 24 runs and clinched 3-match series 2-0.
Player-of-the-match: Trent Boult.