Longevity Planning Has a Second Half, and Almost No One Is Building For It

The financial services industry has fallen in love with the first half of longevity planning. Retirement income products, decumulation modeling, healthcare cost projections, annuity innovation, longevity risk hedging. All of it answers one question: how do we make money last as long as the client does?

It is the right question. It is also only half the question.

The other half is what happens to the money, and the relationship, when longevity ends. Because it always ends. And when it does, most institutions discover that decades of careful planning had a single point of failure built into it: the plan only worked while the client was alive.

The demographic math is not subtle

Since January 1, 2011, roughly 10,000 Baby Boomers have turned 65 every single day. That continues through 2030, when every surviving Boomer will be 65 or older. This generation controls the largest concentration of household wealth in American history, an estimated $124 trillion set to move to heirs and charities over the coming decades.

The longevity industry reads those numbers and sees a decumulation opportunity. That is fair. But read the same numbers from the institution's side of the balance sheet and something else comes into focus: every one of those clients represents deposits, assets under management, and a household relationship that will change hands. The question is not whether that transfer happens. It is whether the institution is still in the room when it does.

Today, mostly, it is not. Industry research has consistently shown that the large majority of heirs move inherited assets away from their parents' financial institutions, often within months of the transfer. The advisor who spent twenty years planning a client's longevity frequently never meets the people who inherit the outcome of that planning. The bank that held the operating accounts for forty years watches them settle, close, and leave.

We treat this as a marketing problem. It is an infrastructure problem.

Longevity planning that ends at death is incomplete planning

Consider what we actually mean when we tell a client we are planning for their longevity. We mean we are planning for the full arc of their financial life. But the arc of a family's financial life does not stop at one person's death certificate. Wealth is not an individual asset with an expiration date. It is a multigenerational flow, and every serious plan for it has to survive the transition between generations.

The estate planning industry technically exists to handle this, but look at where it sits in the client experience: outside the institution, on paper, updated rarely, and activated only after death, at the exact moment when families are grieving, disorganized, and most likely to consolidate accounts somewhere convenient. The handoff between "longevity planning" and "estate settlement" is where relationships die, and we have built almost no technology into that seam.

That seam is where I believe the next decade of banktech and wealthtech investment has to go. I call the category estate orchestration infrastructure: technology embedded in the institution's own systems that captures beneficiary designations at account origination, keeps them current across the life of the relationship, and gives the institution a live, structured picture of where every account is headed before the transfer event, not after it.

The word infrastructure is deliberate. Beneficiary data today is the last analog artifact in an otherwise digital bank. It is collected inconsistently at origination, if at all, stored in ways the institution cannot query, and reconciled manually at death. No institution would tolerate that posture for payments data or KYC data. We tolerate it for the data that determines where $124 trillion goes next.

The relationship case is stronger than the retention case

The defensive argument for this is obvious: an institution that knows its beneficiaries can model its exposure to mortality-driven attrition the same way it models interest rate risk or deposit beta. Deposit run-off at death is measurable, forecastable, and, with the right infrastructure, addressable years in advance.

But the more interesting argument is offensive. A beneficiary designation is not paperwork. It is an introduction. Captured early and treated seriously, it tells the institution exactly who the next generation of the relationship is, years or decades before the transfer. That is time to onboard heirs digitally, include them in planning conversations, and make the institution the natural home for the family rather than one node in an account-closing checklist.

This is where longevity planning and succession planning stop being separate disciplines. A client in their seventies is not only a decumulation problem. Their household is an intergenerational relationship the institution either builds now or loses later. The advisors and institutions that thrive through the great wealth transfer will be the ones that treat the client's children as clients-in-waiting from the day the account is opened.

What the industry should demand next

For institution leaders and the fintech builders who serve them, the practical agenda looks like this:

Make beneficiary capture a core function, not a form. Designation should happen at origination, digitally, and write back to the core in real time. If your origination flow does not ask the question, your longevity strategy has a hole in it.

Measure deposit mortality like any other risk. Age-band your deposit base, model expected transfer timing, and put a number on what walks out the door in the next ten years if nothing changes. Boards should see that number. Move the estate conversation upstream. Settlement workflows matter, but by the time they run, the relationship outcome is largely decided. The leverage is in the years before.

Treat heirs as a distribution channel for trust. Every properly captured beneficiary is a warm, consented, pre-qualified future customer. Almost no institution's CRM reflects that today.

Longevity planning was never really about helping one person's money last one lifetime. It is about making a family's financial life continuous across lifetimes. The industry has built remarkable tools for the first half of that promise. The institutions that win the next twenty years will be the ones that finally build for the second.

About the Author

Martha Underwood is the founder and CEO of Prismm, the estate orchestration infrastructure platform for banks and credit unions, the author of The Death of Deposits (2026), and the creator of the Deposit Mortality Index. She spent more than 25 years building technology inside regulated institutions, most recently as Head of Retail Engineering at a global bank, and speaks frequently on banking, AI, fintech, and what happens when wealth changes hands.