Quantifying the cash opportunity:

A framework for estimating clients' held-away cash

June 24, 2025 

Estimated reading time: 3 minutes

At Flourish, we aim to help advisors tap into the cash opportunity to add value for clients and differentiate their practice. Flourish Cash gives clients access to a cash account with competitive rates§ and enhanced FDIC coverage through our Program Banks.Ω Advisors, meanwhile, benefit as Flourish makes held-away cash visible and opens new paths to organic growth.  

However, because cash has not traditionally been an area of focus for advisors, we often receive questions — both from individual advisors and from firm executives — about the size of the opportunity. How much cash is actually out there? And how much of it could your firm realistically expect to capture?

Over the years, we have developed a simple framework to help advisors and firms quantify the potential upside of presenting clients with a cash solution.

The Flourish framework for assessing your cash opportunity
The Flourish framework for assessing your cash opportunity_mobile

Our methodology to assess the cash opportunity begins by considering your firm’s AUM that is attributable to personal clients (e.g., not institutions or retirement plans); while the assets you manage are not directly related to the funds that end up in Flourish Cash, your firm AUM is closely correlated with how much cash is out there. From there, we make several assumptions as discussed below that drill down from the theoretical maximum total cash outstanding of your client base to a more realistic picture of what strong client adoption of Flourish Cash would look like.

Starting at the maximum total cash outstanding and working toward what we call phenomenal penetration with Flourish Cash, we have identified the following benchmarks:

Comparison Table-1

To note, this is simply a framework: we work with a number of firms that have exceeded the “Theoretical maximum penetration with Flourish Cash,” whether because their clients hold a disproportionate amount of cash, or because they heavily utilize Flourish Cash with segments that are poorly proxied by AUM — such as business owners or prospects. With that said, this framework has proven to be a helpful and reliable starting point for assessing the cash opportunity.

section-annuity-replace-advisor-primer (1)-3
section-insights-cash-out-there-mobile-1 (1)

Numerous studies show that high net worth individuals (HNWIs) hold approximately 20% of their wealth in cash.1 From here, we make the assumption that roughly 20% of your firm’s AUM represents your clients’ total cash holdings. For a firm that manages $1B in assets for personal clients, that means your clients could have $200M+ in cash on the sidelines.

There are a variety of macroeconomic forces, personal traits, and life factors that can influence whether your clients hold more or less cash than the average investor. If you wish to adjust this baseline calculation, you can factor in specific details you know about your client base and adjust this 20% assumption upward or downward, as needed.

Some of a client’s decisions about cash are driven by behavioral factors. As an example, research from Vanguard showed that in 2022, as anxieties about the market rose, more clients tapped retirement funds and converted some of those assets into cash.2

A client’s stage of life may also influence the amount of cash they hold. Research shows that HNWIs of the silent generation hold an average of 23% in cash. In contrast, cash reserves for high net worth millennials represent 11% of their total assets.3

You know your broader client base and their needs in the current macroeconomic environment best, and so may wish to adjust our general 20% AUM assumption up or down to account for the realities of your book of business at any given time.

section-annuity-replace-advisor-primer (2)-1
section-insights-cash-out-there-mobile-1 (2)

Once you’ve settled on a figure for your theoretical maximum total cash outstanding, you can turn your focus to what Flourish Cash penetration might look like at your firm.

While your clients may hold 20% of their total wealth in cash, not every dollar will end up in a Flourish Cash account. Some of those dollars will likely remain in checking and savings accounts at other institutions, while other clients will hold some amount of cash in the portfolio. 

Here, we can turn to a representative data point from existing Flourish Cash clients. Clients with a self-reported net worth of $1-2M have an average Flourish Cash balance of $217.6K, or 14.5% of their net worth in cash.||

Assuming that your average client will hold ~5% of cash elsewhere and ~15% of cash in a Flourish Cash account, you can multiply your AUM by 15% to discover the total addressable pool, if every client adopts the product. For that $1B firm, that means approximately $150M in cash might be addressable. 

section-annuity-replace-advisor-primer (3)
section-insights-cash-out-there-mobile-1 (3)

Of course, assuming 100% adoption of any product is unrealistic. Some clients may already have funds at a high-yield savings account and be reluctant to explore other options; others may be tech-averse and disinclined to use an online banking product.

You may also have limitations on the firm side. Some advisors may be uninterested in providing clients with a cash solution or simply forget to incorporate it into their typical talking points, leading to lower adoption rates.

Our qualitative and quantitative data suggests that firms who are close to 100% adoption wind up with 10% of AUM in Flourish Cash accounts.|| We consider this to be “Phenomenal penetration” for the product, and it is a figure that’s likely most achievable by firms that adopt a streamlined process for internal rollout. Conversely, 5% represents truly “Excellent Penetration” — and more often than not, is a firm that is well on their way towards 10%.

For our representative $1B firm, that means $50-100M in cash. 

section-annuity-replace-advisor-primer (4)
section-insights-cash-out-there-mobile-1 (4)

When advisors log in to the platform, they can access a variety of ready-to-go materials in the Advisor Resource Center that can help introduce Flourish Cash to internal teams of advisors, help advisors introduce clients to the solution, and help share the opportunity in marketing communication. The story is simple, the benefits are clear, and the opportunity is vast. 

Ready to learn more about how adding Flourish Cash to your offerings can deliver better results for your clients and firm? Visit our product page for additional information.

 

About Flourish

Flourish builds technology that empowers financial advisors, improves financial lives and retirement outcomes, and delivers new and innovative investment options to advisors. Today, the Flourish platform is used by more than 1,000 wealth management firms representing more than $2.6 trillion in assets under management. Flourish is wholly-owned by Massachusetts Mutual Life Insurance Company (MassMutual). For more information, visit www.flourish.com.

 

Related posts:

Interested in learning more about Flourish Cash?


Flourish is an online platform through which investors can access financial services and products. Flourish’s offerings are provided by different entities and are subject to different terms, investor protections, and risks. Flourish Cash is offered by Flourish Financial LLC, a registered broker-dealer and FINRA member. Flourish Financial LLC is not a bank. Check the background of Flourish Financial LLC and its personnel on FINRA's BrokerCheck. Flourish Annuities refers generally to the annuity platform operated by Flourish Technologies LLC and to Flourish Insurance Agency LLC, and, where applicable, Flourish Financial LLC. Flourish Insurance Agency operates in its capacity as a licensed insurance producer with offices in Jersey City, New Jersey, and does business in California under the name Flourish Digital Insurance Agency, providing insurance services related to such platform. Variable annuities, defined in this context to include Registered Index-Linked Annuities (“RILAs”), are offered through Flourish Financial LLC. Annuities shown on the platform are sold through Flourish Annuities, and are issued by one or more licensed insurance companies. The Flourish entities mentioned above are affiliates. Flourish Cash and Flourish Annuities accounts are separate accounts and only assets in Flourish Cash accounts may be eligible for protection by the FDIC or SIPC. Please review the Legal section of our website, and the disclosures provided with each Flourish service or product for further information. If you were introduced or invited to Flourish by an investment advisor or other third party, please be aware that, unless otherwise disclosed to you, they are not affiliated with any Flourish entity. The role of the investment advisor or other firm that invited you to Flourish may vary between different Flourish services and products, as further described in your terms of service. © 2025 Flourish. All rights reserved.

† A Flourish Cash account is a brokerage account offered by Flourish Financial LLC, a registered broker-dealer and FINRA member. Flourish Financial LLC is not a bank. Check the background of Flourish Financial LLC and its personnel on FINRA's BrokerCheck. The cash balance in a Flourish Cash account will be swept from the brokerage account to deposit account(s) at one or more third-party Program Banks that have agreed to accept deposits from customers of Flourish Financial LLC. The accounts at Program Banks will pay a variable rate of interest.

§ Flourish Cash currently has a tiered interest rate structure and currently has one tier in effect. Rate and FDIC insurance coverage details can be found in the program summary. We deposit your cash with one or more of the Program Banks, subject to any Program Bank(s) you have excluded. You will earn the highest rate offered by Flourish up to the maximum deposit amount for each tier. Each annual percentage yield (APY) may change at any time. Your advisor may charge fees which impact the effective rate you receive on your cash; you should speak with your advisor for more information. The Flourish Cash interest rate(s) could be lower than the rate that could be earned by opening a deposit account directly with a Program Bank.

Ω The cash balance in a Flourish Cash account that is swept to one or more Program Banks is eligible for FDIC insurance, subject to FDIC rules, including aggregate insurance coverage limits. FDIC insurance will not be provided until funds arrive at the Program Bank. There are currently at least 24 Program Banks available to accept deposits for business Flourish Cash accounts and personal Flourish Cash accounts, and we are not obligated to allocate customer funds across more than this number of Program Banks if there is a greater number of banks in the program. Customers are generally eligible for FDIC insurance coverage of $250,000 per customer, per Program Bank, for each account ownership category. Thus, business customers are eligible for up to $6,000,000 of FDIC insurance and personal customers are eligible for (i) up to $6,000,000 of FDIC insurance for an individual account or revocable living trust account and (ii) up to $12,000,000 of FDIC insurance for a joint account with two owners or joint revocable living trust(s). The total FDIC coverage for a two-person household is calculated assuming that each household member has an individual account and that both household members share a joint account. If the number of Program Banks decreases for a customer (for instance, because a customer chooses to exclude Program Banks from receiving their deposits), the amount of FDIC insurance through Flourish Cash could be lower. Typically, all of a customer’s deposits at a Program Bank in the same ownership category (including deposits held outside Flourish Cash or held through multiple Flourish Cash accounts with the same ownership category) count toward the FDIC insurance limit for deposits at that Program Bank. Customers are responsible for monitoring whether they maintain deposits at a Program Bank outside of Flourish Cash and should consider choosing to exclude that Program Bank from receiving their deposits to avoid exceeding FDIC insurance limits. Although Flourish Cash is offered through a brokerage account and cash held in brokerage accounts often has the benefit of SIPC protection, until such time as we offer securities products, customers likely will not have the benefit of SIPC protection. SIPC protection is not available for cash held at the Program Banks. Our current Program Banks can be found here. For additional information regarding FDIC coverage, visit https://fdic.gov/.

∆ An advisor’s ability to view client account information is subject to applicable privacy laws and clients' consent to such sharing.

|| Source: Flourish Financial LLC; data as of 01/01/2025, average balances calculated with respect to each household's non-zero Flourish account balances across all household accounts with a self-reported net worth of $1-2M. 

|| Source: Flourish Financial LLC; data as of 06/24/2025.

1. Capgemini Research Institute. "World Wealth Report. Sail the great wealth transfer: Setting a course to win Next-gen high-net-worth individuals." January 2025. 

2. Vanguard. “Vanguard Investor Pulse: Anxiety and Cash Needs on the Rise.” November 22, 2022.
 
3. Mancini, Jeannine. “Can You Guess What Percentage of Their Wealth the Rich Keep in Cash?” Yahoo! Finance. June 10, 2024.