Sydney, March 6, 2026, 17:04 AEDT
- Commonwealth Bank of Australia tapped the market for A$1.85 billion in subordinated securities, splitting the deal into three tranches maturing in 2036 and 2046.
- The 2046 fixed-rate tranche carries a 6.40% annual coupon, while other tranches are structured with both fixed and floating rates, each set at a 1.28% margin.
- If regulators determine CBA has become non-viable, the instruments may be converted into ordinary shares.
Commonwealth Bank of Australia tapped the market with A$1.85 billion ($1.2 billion) in subordinated securities, bolstering its regulatory capital buffer with the new funding.
This deal is grabbing attention as Australian banks ramp up reliance on wholesale funding, with costs still volatile and deposit competition showing no signs of easing. Subordinated notes, for their part, usually qualify as Tier 2 capital—a buffer intended to take losses ahead of senior debt holders.
It comes at a time when investors remain watchful over the details of bank capital structures—the fine print can still sting. If the prudential regulator intervenes, these instruments risk being converted to equity or written off entirely.
CBA has tapped markets with three tranches: A$300 million in fixed-to-floating rate subordinated securities maturing March 5, 2036; A$950 million in floating rate subordinated securities, also due March 5, 2036; and A$600 million in fixed rate subordinated notes set to mature March 5, 2046. According to the pricing supplement, investors in the fixed-to-floating piece will collect 5.632% per annum until March 2031 before the rate floats with a 1.28% margin. The floating rate slice pays out quarterly, also at a 1.28% margin. The 2046 notes carry a fixed 6.400% coupon. 1
Subordinated securities rank below senior debt if a company is wound up. Here, the terms specify that these securities could be swapped for fully paid ordinary shares if a “Non-Viability Trigger Event” hits — that is, if the Australian Prudential Regulation Authority instructs the bank to convert or write down capital instruments for it to remain afloat.
CBA has issued an updated dividend notice, spelling out the currency terms for shareholders and revealing that roughly 13.5% of ordinary shares are taking up the dividend reinvestment plan—meaning investors are opting for shares instead of cash. The bank also published the dividend equivalents for New Zealand dollars and pounds sterling, calculated using the specified exchange rates. 2
CBA is hardly alone here. Australia’s “Big Four” — National Australia Bank, Westpac, and ANZ — regularly hit the Tier 2 markets, juggling capital requirements and rolling over old debt. The real distinction? It’s all about when they go and what it costs, and those variables can swing fast with changing rates and shifting risk tolerance.
There’s a catch with this funding. Should market conditions sour and spreads blow out, issuing fresh debt costs more, and current holders might see prices drop. In a crunch, investors are exposed to the real risk: forced conversion to equity at a bad time—or, depending on the terms, a full write-down that sticks.
