Estate Liquidity: When the Return Is Right and the Cash Isn't There
The executor calls on day nineteen. He is the son who has run operations for a decade, and he wants to know what is owed to the IRS and when. You pull the file. The draft 706 is clean: the valuation is supported, every schedule ties, and nothing in it will draw a question. The estate holds a distribution company, the building it operates from, and about $1.8 million in marketable securities. The tax is roughly $9 million, and it is due in nine months.
Nothing in that return is wrong. The estate is correctly reported and still short of the cash to pay for it. That is where the tax return stops and the plan begins, and in an estate with this shape it shows up as a deadline instead of a planning topic.
What the Return Got Right
The 706 does what it is built to do. It establishes a defensible value for every asset on the day of death, applies the deductions and elections available, and arrives at a tax number. That discipline is the reason the executor trusts the figure.
What a return does not do is ask where the payment comes from. The form has no schedule for liquidity. The question sits in a different document, the plan, and in this estate nobody wrote it. This is structural. The engagement was scoped to produce the return, and the return is complete.
The Arithmetic Is Simple and the Timeline Is Not
Under the One Big Beautiful Bill Act, the 2026 federal exemption is $15 million per individual, and the rate above it is 40%. Jay Rogers, writing in Crain Currency, works through a $45 million estate for a single decedent. Roughly $30 million is taxable, and the federal bill comes to about $12 million.
The same article points to the part that catches people. Estate tax is due nine months after death, and a six-month extension to file does not extend the time to pay. A widowed owner with a $38 million estate that is mostly operating company and real estate has a tax bill on day one and assets that cannot be sold at fair value inside the window.
Gallup's survey of 1,264 U.S. business owners, fielded in fall 2024, found that 55% either plan to close the business or have no plan at all. A business with no plan has usually not addressed liquidity either. The two problems tend to travel together.
The Elective Tools and Where They Stop
You know the statutory relief. It still helps to lay out what it covers, because the executor will ask, and the answer shapes what can be done beforehand.
Section 6166. Where a closely held business interest makes up at least 35% of the adjusted gross estate, the tax attributable to it can be deferred and paid in installments over up to 14 years, with a reduced interest rate on part of the deferred tax. Northern Trust's summary of the deferral and redemption tools covers the qualification tests. Rogers adds the practical limits: the election has to be made on a timely filed Form 706, only the tax attributable to the business qualifies, and the deferral ends if 50% or more of the interest is disposed of.
Section 303. A redemption of stock from the estate to pay estate taxes and administration expenses receives sale-or-exchange treatment, again where the business is at least 35% of the estate. The corporation needs the cash to do the redemption, which brings the question back to the company's own liquidity.
Both are real relief, and neither is cash. Section 6166 postpones the payment and the interest runs from day one. Section 303 moves the funding problem inside the company. Neither one helps with the 65% of an estate that sits outside the business, or with a business that falls under the 35% line because of a restructuring done for another reason. The succession post flagged that threshold for a similar reason: a change to the buy-sell can move the number without anyone intending it to.
There is a further wrinkle where the funding already exists. After Connelly v. United States, corporate-owned insurance proceeds that fund a redemption can increase the value of the company for estate tax purposes. A liquidity solution built the wrong way can enlarge the bill it was meant to pay.
What Pre-Death Liquidity Planning Looks Like
Rogers describes a three-part liquidity audit, to be run alongside the estate plan:
1. Map every asset by the realistic time and cost to convert it to cash. A brokerage account converts in days. An operating company, a private fund interest, and commercial real estate convert in months or years, and often at a discount when the seller is rushed. 2. Model the cash obligations within 90 days of death under a base case, a stress case, and a worst case. Estate tax is one line. Administration costs, income tax on the decedent's final return, and any buyout obligations are others. 3. Identify the tools that close the gap. Rogers lists irrevocable life insurance trusts, credit facilities, and liquid reserve policies.
Rogers also names the sequencing problem: advisers tend to optimize for transfer tax and control first and address liquidity later, when earlier structural decisions have already limited the options. By the time anyone asks where the cash comes from, the trust is signed, the gifting is done, and the estate is already illiquid by design.
That sequencing pattern is not a failure on your side of the table. The planning conversation about transfer tax is usually yours, and it is usually handled well. The funding conversation requires a different set of capabilities: underwriting, trust drafting, and lending relationships that a tax and advisory practice was never built to carry, and has no reason to build.
Most firms find the boundary in the middle of a client conversation, not before it. A Boundary Conversation is the version of that discussion held with no client and no deadline in the room.
A Boundary Conversation is 30 minutes with JT and Luke — no pitch, no client names required — mapping where your firm's advice currently stops.
Which Clients Belong on the List
Not every client needs this review. The profile that does is narrow, and you can pick it out of the book without much effort:
- A concentrated estate. One operating company, one parcel of real estate, or one private holding makes up most of the net worth. - A taxable estate under current law. Net worth, including business value and any life insurance the client owns, runs above the $15 million exemption, or above $30 million for a married couple using both exemptions. - No outside liquid reserve. Marketable securities and cash are a small fraction of the projected tax. - A plan built for transfer, not for payment. Trusts and gifts exist, but nobody has traced the cash that pays the tax.
For these clients, the question to add to the annual meeting is short: if you died on the first of next month, where would the estate tax come from, and who would write the check?
The answer tells you what you are dealing with. A client with a clear, funded answer needs nothing from you. A client with a vague one has an open item that a return will not surface. The permanence of the exemption does not change the question. It only means the estates affected are the ones that were already large. The permanent $15 million exemption has its own set of consequences for the book, and the sunset that never arrived is a separate planning conversation worth having with the same clients.
The Professional Judgment Call
You have three reasonable positions. You can build the liquidity capability inside the firm, which means underwriting knowledge, trust coordination, and lender relationships that sit well outside a practice built around a filing calendar. You can refer the client out and hope the plan comes back coordinated. Or you can partner with a specialist who builds the funding plan while you stay the advisor of record and keep the tax and entity work where it already sits.
Each choice is defensible. The right one depends on your capacity, the number of clients that fit the profile above, and how much of the coordination you want to carry. What is hard to defend is no choice, because the executor's call on day nineteen gets answered either way. The only open variable is whether the answer was ready beforehand.
The question is not whether your clients with concentrated estates need a funded liquidity plan. It is whether they get one from someone who keeps you in the room.
You don't need to build a new capability to solve this for a client. You need one call to see whether a partnership does it better than a referral would.
J.T. Hardcastle is a Partner at Sage & Main who helps families and business owners align their wealth with their values through tax-smart planning and intentional generosity.
Comments