Why share of wallet is the wrong target for Australian private banks

AFFLUENTIAL  ·  WealthLens Deep Dive: Advice and Relationships  ·  29 August 2026

85% of the Australian HNW respondents in WealthLens™ 2026 use two or more private banks, the widest multi-banked share of the four markets measured. 9% use no financial adviser at all. A coverage model built around winning the primary relationship is aimed at an arrangement most of the Australian coverage does not have.

Daniel is thirty-three, and the business he started is now big enough that the money it throws off has to go somewhere. Two private banks hold it. He speaks to the one he calls his main bank about once a month, usually on a Tuesday, usually from the car park before he goes into the warehouse, engine off, phone propped against the wheel. Neither bank is who he calls first though. That is an independent adviser, onshore, who sends a recommendation and then waits. Daniel reads it, sits on it overnight, and decides.

Only one in seven Australian respondents uses a single private bank

The single private bank is the minority arrangement in all four markets covered, and in Australia it is close to a curiosity. Of the 297 Australian respondents who gave a number, 44 gave one, or 15%. Everyone else gave two or more.

That is the widest multi-banked share of the four markets, and the gap is real: 85% in Australia against 78% in Hong Kong, the next closest.

Coverage models tend to be built the other way round. A primary-relationship target, a share-of-wallet metric, and an RM incentive that pays for consolidation all assume a client who has picked one bank and can be talked into bringing more to it. That assumption only fits about one Australian respondent in seven. For the rest, the live question is what the second slot is worth, because the second slot is where most of this market already sits.

The second bank is ordinary in Australia; the third is doing a different job

Ordinary is the right word for the second bank here. 57% of Australian respondents hold exactly two private banks, the heaviest concentration on that one answer in any of the four markets. Two is the Australian number.

The third bank is a different decision, and there Australia is unremarkable. At three or more, Australia sits at 28% and Hong Kong, the highest of the four, at 31%. On that measure Australia does not stand out. What sets the market apart is the missing single-bank client.

We would read this as a market where a second relationship is the standing arrangement and a third one is hired for a specific job: a specialist mandate, or an account nobody has got round to closing. That narrows the competitive question to something a coverage lead can answer, which is whether the bank is the first of this client’s two or the second.

Australian clients reserve the decision and buy advice from several places

Reserving the decision and buying advice sit comfortably together in Australia. 37% of the 272 Australian respondents who have a wealth manager describe an arrangement in which they make every call and the manager executes. Hong Kong and China are at 23% on the same answer.

Singapore is the qualifier. At 33% it is close enough to Australia that this is a two-market pattern.

Advice is not thin here. 9% of Australian respondents use no financial adviser of any kind, and among those who use one, 77% use two or more kinds: a bank relationship manager alongside an independent adviser, or an adviser alongside a broker.

One Australian respondent in the sample uses four private banks, runs his money through a family office, and reports that his wealth manager only executes trades. Asked why he was considering a switch in private banking, he wrote: “More flexible customized asset allocation solutions.”

We would read the pattern as a client buying second opinions rather than second mandates. Nothing here shows that holding more banks makes a client more confident, or the reverse.

Second-bank accounts need a coverage model of their own

A coverage model of its own starts with what the private bank actually represents to these clients. Among Australian respondents who have a wealth manager, 15% name a private bank as their main adviser but 51% name an independent financial adviser. For most of the book, the private bank is neither the only provider nor the principal advisory relationship, which makes the independent adviser a route to the client. Coverage that treats the IFA as a competitor is aimed at the wrong target.

Relationship managers carry more of this than the org chart suggests. 64% of Australian respondents say they would follow their RM to another institution, level with Hong Kong and Singapore, so not an Australian peculiarity, but it lands differently on an account a client can afford to lose. RM retention and second-bank retention belong on the same line of the budget and should be reviewed together.

Second place is not restful. 61% of Australian respondents are looking for a new private banking provider at some point, and that share is level across all four markets. Australian clients hold several banks and are no less likely than anyone else here to be shopping, so your Australian coverage team is defending a position most of the market is already comparing.

Ask how often the bank is in the conversation before the client decides

The conversation before the client decides is what an Australian bank is competing for, and assets held will not measure it. Assets are easy to count and they fit the slide, which is why share of wallet will keep being reported, and in this market, it will keep pointing relationship managers at a consolidation that mostly does not happen.

Coverage leads should set the narrower question as this quarter’s measure for the Australian coverage, on the strength of an 85% multi-banked share, and leave the consolidation target to a market where clients consolidate.

Daniel will be in the car park again on Tuesday, reading something an adviser sent and deciding overnight. Two private banks are on the account, and neither is on the call.

Source note

WealthLens 2026, AFFLUENTIAL. Online survey of 1,400 high-net-worth respondents in Australia (n=300), Singapore (n=300), Hong Kong (n=300), and China (n=500), fielded 29 May to 9 July 2026. Provider-count figures rest on the 297 Australian respondents who gave a number of private banks; advice-arrangement figures rest on the 272 Australian respondents who named at least one adviser.