Hana Bank's will-substitute trust book outweighs its four largest rivals combined

Five trillion won against the 7.67 trillion won held at the five major banks is 65.2%, so the reported "more than 60%" ^[1] is understating the position ^[1]; the remaining four lenders are splitting 2.67 trillion won, an average of about 668 billion won apiece ^[2], which puts Hana's book at roughly seven and a half times the typical rival's ^[3].

The mix of contracts is the more interesting number. Preparing for diminished judgment from dementia or similar conditions accounts for 49% of Hana's customized will-substitute trust contracts and preparing for inheritance disputes another 41% ^[4], which is 90% of the stated purposes between them ^[5], against 6% for protecting minors and people with disabilities and 4% for bequests to charity ^[4]. What is being bought there is a mandate to keep managing money through a long decline, which is why the payment claim agent matters more than the will substitution: funds can be drawn for designated purposes while the client is still alive ^[5], and in one case the bank describes, a woman in her 80s living alone with children abroad arranged for hospital and nursing costs to be claimed, for her apartment to be sold if the financial assets ran short, and for the remainder to pass to the children after her death ^[6].

So this is a book with a settlement date written into every contract, and the money leaves twice, first as drawdown for care and then as transfer to heirs ^[6]. Holding 65% share means re-winning the next generation each time, and the bank's stated answer, according to a Hana official, is to widen the client age range down from the 70s and 80s that once dominated and to sell the trust as lifetime asset management rather than probate plumbing ^[9]; the mass-market version launched in 2020 is the same argument in a lower price band ^[3].

What the disclosure does not contain is a fee. Balances, purpose mix, the four specialist centers and the weekly consult count are all there; a fee rate, trust fee income and a client count are not ^[7]. The moat, if that is the word, is therefore being appraised off assets under trust, while the cost side is visible only as capacity: as many as four teams on a single household ^[8] is senior private banking time, from a franchise in its 31st year ^[7], not deployed on investment mandates. My read is that the durable asset is the referral apparatus, or rather the flow of inheritance, gift and real estate cases that feeds the four centers ^[7], rather than the 5 trillion won, because the balance redeems itself and the centers do not.

The counter-thesis is size. A 7.67 trillion won pool across five banks ^[1] is not large, and the reporting names no competing trust companies or brokerages, so 65% of it may be worth less than a smaller share of whatever the segment reprices to when Korean transfers arrive in volume. For the other four to take the majority they would have to add 2.33 trillion won, an 87% increase on their combined book ^[4], which is the figure to watch rather than Hana's. And the read breaks on one disclosure: trust fee income showing the segment is immaterial to earnings, or a mass-market book ^[3] growing faster than the per-case advisory cost can be carried.