The benchmark S&P/ASX 200 slid 0.13 percent to 8,142 as financials declined, offsetting gains in the mining and energy sectors.
The broader All Ordinaries index ended flat with a positive bias at 8,385.10. Banks Westpac and Commonwealth Bank of Australia fell over 3 percent each while mining giant BHP rallied 3.3 percent and Rio Tinto surged 3.7 percent.
Casino firm Aristocrat Leisure climbed 2.1 percent after winning an injunction against a competing game in the U.S.
Supermarket chain Coles Group lost 3 percent and Woolworths fell 2.9 percent after they were sued over fake discount claims.
Australia's central bank left its interest rate unchanged at a 12-year high as widely expected on Tuesday.
The policy board of the Reserve Bank of Australia governed by Michele Bullock decided to maintain the cash rate target at 4.35 percent.
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The interest rate paid on Exchange Settlement balances was kept unchanged at 4.25 percent.
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