In New Zealand, the benchmark S&P/NZX 50 index rose as much as 0.4% to 12,776.60, hitting its highest level since Feb. 18 and rising for a fourth straight session.
US intermediate-dated Treasury yields rose on Monday after the Treasury Department sold $121 billion in debt to mixed demand, but benchmark 10-year yields were only 1 basis point higher at 1.570%.
The RBA will be buying bonds at a faster pace than the government is selling them, while also expanding its balance sheet more quickly than the US Federal Reserve.
Westpac on Thursday ditched its call for two more rate cuts from the Reserve Bank of New Zealand (RBNZ) and forecast rates would be held at 0.25% for the foreseeable future.
The news took a toll on safe haven bonds with Australian 10-year futures falling 6 ticks to 98.9600, implying a yield of 1.04% and back toward a recent low at 98.9200.
While dividends at Australia's so-called 'Big Four' banks have been constrained by a regulatory limit imposed in light of the pandemic, Westpac was the only one to not pay an interim dividend earlier this year.
Westpac expects the sale to Papua New Guinea-based Kina Securities Ltd to boost its core capital by 3 basis points, but is writing in an expected loss of A$230 million from the deal.