Family Limited Partnership (FLP) Planning for UHNW Families

Not tax or legal advice. Verify all figures and strategies with qualified estate counsel before acting.

A family limited partnership (FLP) is one of the most powerful — and most scrutinized — estate planning tools available to UHNW families. Used correctly, an FLP can reduce the gift-tax value of transferred family wealth by 15–35% through legitimate valuation discounts, while simultaneously centralizing asset management and providing creditor protection for limited partners. Used incorrectly, it collapses under §2036 and hands the IRS a complete victory.¹

This guide covers how FLPs actually work, how discounts are calculated and defended, the specific §2036 risks that cause FLPs to fail in practice, the FLP vs. LLC decision, and how an FLP fits alongside GRATs, SLATs, and IDGTs in a comprehensive $30M+ estate plan.

How an FLP works

A family limited partnership is a limited partnership formed under state law with two classes of partners:

• General partner (GP): Controls the partnership — investment decisions, distributions, capital calls. The GP is typically the senior generation (the grantor) or a closely held entity (such as an LLC or S-corp) owned by the grantor. The GP interest is usually 1–2% of total partnership value. In exchange for control, the GP bears unlimited personal liability for partnership obligations — a real consideration for operating businesses or real estate with potential environmental or tort exposure.
• Limited partners (LPs): Hold the economic interest in the partnership but have no management rights. LP interests have restricted transferability under the partnership agreement — an LP cannot simply sell or transfer their interest without GP consent. The restricted transferability and lack of control are the two characteristics that justify valuation discounts.

The typical FLP formation sequence:

1. Grantor forms the limited partnership (usually in Delaware, Nevada, or Wyoming).
2. Grantor contributes assets — business interests, real estate, investment portfolio — in exchange for all GP and LP interests.
3. Over time, the grantor gifts LP interests to children, grandchildren, or trusts (e.g., a dynasty trust or IDGT).
4. Each gifted LP interest is appraised by a qualified independent appraiser who applies appropriate discounts to reflect the lack of control and lack of marketability of the LP interest.
5. The discounted appraised value — not the pro-rata share of the FLP's underlying assets — is what goes on IRS Form 709 (gift tax return) as the taxable gift.

Valuation discounts: minority interest + DLOM

The core economic rationale for an FLP is that a limited partnership interest is worth less than a proportional share of the underlying assets — because the LP cannot force a liquidation, cannot control distributions, and cannot easily sell their interest to a third party. This is not a fictional tax discount; it reflects genuine economic reality. Courts and the IRS accept this, though they scrutinize the magnitude.

Two discounts apply:

1. Minority interest (lack of control) discount

An LP interest carries no management rights. The LP cannot direct investments, determine distributions, or force a sale of partnership assets. A rational buyer would pay less for this interest than for an equivalent ownership percentage in a publicly traded company or in an asset held directly. Typical minority interest discounts range from 10–25%, depending on the partnership agreement terms, the nature of the assets, and appraisal methodology.

2. Lack of marketability discount (DLOM)

LP interests are not freely transferable. The partnership agreement typically requires GP consent for any transfer, and there is no public market for a family partnership interest. A rational buyer would discount the value to reflect the illiquidity and the time/cost required to eventually realize value. Typical DLOM ranges from 10–30%.

Combined discount

The two discounts are typically applied multiplicatively, not additively. A 20% minority discount and a 15% DLOM yield a combined discount of approximately 32% (not 35%):

A family that transfers $5M of underlying asset value as LP interests appraised at a 35% discount has made a $3.25M taxable gift — using only $3.25M of lifetime exemption rather than $5M. The $1.75M of "additional" transfer is essentially exempt from gift tax through the discount.

Estate planning applications

Annual exclusion gifting at scale

The 2026 annual gift exclusion is $19,000 per recipient ($38,000 per couple).³ Without discounts, a couple with four adult children and eight grandchildren can transfer $38,000 × 12 = $456,000 per year. With a 30% FLP discount on gifted LP interests, the same $456,000 of annual exclusion gifts transfers approximately $651,000 of underlying asset value — a 43% increase in annual transfer efficiency.

Lifetime exemption efficiency

With the $15M per-person exemption (OBBBA 2025, permanent), a grantor using $15M of exemption to fund gifts of FLP interests valued at a 30% discount is actually transferring $21.4M of underlying assets — the discount "stretches" the exemption by approximately 43%.

Removing future appreciation

Once LP interests are gifted, all future appreciation on the underlying assets accrues to the LP interest holders — outside the grantor's estate. An FLP funded with $10M in real estate that grows to $30M over 20 years results in the $20M of appreciation escaping estate tax entirely, with no additional gifts required.

Generation-skipping applications

LP interests can be gifted directly to dynasty trusts or generation-skipping trusts, with GST exemption allocated at the time of the gift. The discounted value also applies to GST transfers, creating efficiency in the same way as for gift tax.

The §2036 problem — why FLPs fail

IRC §2036 is the primary IRS weapon against FLPs. It provides that if a grantor transferred property but retained the right to possession, enjoyment, or income from that property, the transferred property is included back in the grantor's gross estate at death. For FLPs, the typical IRS argument is:

"The grantor retained practical control over the FLP assets as GP and continued to treat FLP assets as personal funds — the transfer to the FLP was not a genuine change in economic ownership."

The Tax Court has agreed with the IRS in cases where the FLP was clearly a formality rather than a functioning entity. The most common §2036 failure modes:

• Deathbed formation: Funding an FLP within weeks or months of the grantor's death — particularly where the grantor was terminally ill at formation — signals that the transaction was motivated solely by tax avoidance. Courts look at whether the grantor had any realistic non-tax reason to form the FLP at that point.
• Comingling personal and partnership assets: Using FLP bank accounts for personal expenses, paying personal bills from FLP funds, or treating FLP distributions as an informal personal allowance are all §2036 triggers. The partnership must be operated as a genuine business entity with separate accounts, books, and arm's-length distributions.
• No legitimate non-tax purpose: The IRS and courts look for a legitimate, independent business reason for the FLP — centralized management, liability protection, facilitation of family investment coordination, minority interest holding for a real operating business. An FLP that exists solely as a vehicle to hold marketable securities and generate discounts has a weaker non-tax purpose argument.
• No actual change in economic control: If the grantor contributed assets to the FLP but continued making all investment and distribution decisions as GP exactly as before, with LP interests going to children who never received actual distributions, the economic reality hasn't changed — and §2036 may apply on substance-over-form grounds.

The bona fide sale exception

IRC §2043 provides a critical exception: §2036 does not apply to a bona fide sale for adequate and full consideration in money or money's worth. If the transfer to the FLP was a genuine arm's-length exchange — the grantor received LP and GP interests in exchange for contributed assets, the interests were genuinely worth what the grantor gave up — then §2036 does not pull the assets back into the estate.

The Estate of Kimbell v. United States (5th Cir. 2004) established the framework courts use: a transfer qualifies for the bona fide sale exception when (1) there is a legitimate non-tax purpose for the partnership, (2) the transfer was not a disguised testamentary transfer, and (3) the grantor received interests proportionate to assets contributed. Estate of Bongard v. Commissioner (2005) confirmed similar requirements, with the Tax Court holding for the estate where the FLP had genuine investment and management objectives.⁴

FLP vs. family LLC

Which to choose: For most UHNW families, the FLP and LLC are functionally equivalent for estate planning purposes. The main practical advantage of an LLC is that the managing member has no unlimited personal liability. For holding real estate with environmental risk or operating businesses with tort exposure, this matters significantly. For holding investment portfolios or private equity interests with limited liability, the distinction is less important. Many estate planning attorneys prefer the LP structure for the clarity of the GP/LP separation; others prefer the LLC for the liability protection at the manager level. Work with counsel who has experience with both.

What to fund — and what not to fund

Strong FLP candidates

• Income-producing real estate: The FLP provides centralized management of multiple properties, a clear non-tax business purpose (active management of a real estate portfolio), and legitimate valuation discounts due to the management and marketability restrictions.
• Operating business interests: Holding a family business in an FLP before a succession or sale can facilitate gifting of business interests at discounted values — provided the business purpose is genuine and the FLP isn't formed solely for the discount.
• Private equity and hedge fund interests: Illiquid alternative investments are natural FLP candidates. The assets themselves are already illiquid; holding them through an FLP adds another layer of restriction that supports discount arguments.
• Pre-IPO or pre-liquidity-event equity: Pre-IPO stock held in an FLP can be gifted to trusts at discounted values before the liquidity event — moving the appreciation to beneficiaries before it occurs. Must be coordinated with QSBS §1202 eligibility (the FLP/trust structure affects holding periods and qualification).

Weaker FLP candidates

• Pure marketable securities portfolios: The IRS has challenged FLPs that hold only publicly traded stocks and bonds on the grounds that there is no legitimate non-tax purpose — the grantor could have achieved the same investment result holding securities directly or through an ordinary brokerage account. Courts have sometimes agreed, sometimes not. If you hold a diversified portfolio, the non-tax business purpose (e.g., centralized family investment management, investment policy coordination across generations, preventing individual LP mismanagement) must be clearly documented at formation.
• Personal use assets: A personal residence, vacation home, or art collection held for personal enjoyment has an obvious §2036 problem — the grantor retained the right to use and enjoy the property. Do not contribute personal-use assets to an FLP.
• Assets with significant debt: Contributing encumbered property to a partnership can trigger deemed gain recognition if the debt transferred exceeds the contributor's basis (§§ 731, 752). Model the tax consequences before contributing leveraged assets.

IRS audit triggers and common mistakes

The IRS publishes audit guidelines for FLPs. The following patterns increase audit risk and §2036 vulnerability:

• Same-day formation and funding: Forming and funding the FLP on the same day — particularly with a contemporaneous gift of LP interests — suggests the transaction was not a genuine exchange. Allow time between formation, funding, and the first gifts.
• Grantor retains all economic benefit: An FLP where the grantor receives 100% of distributions (despite gifting LP interests) or where distributions are made without reference to the LP interests held by each partner undermines the transfer's legitimacy.
• No independent appraisal: Gifts of FLP interests require a qualified appraisal as defined under Reg. § 1.170A-17. Gifts of closely held interests without a qualified appraisal expose the donor to a 40% penalty under §6662 for substantial valuation understatements.
• No annual K-1s or partnership returns: If the FLP doesn't file Form 1065, issue K-1s, and maintain separate books, it isn't operating as a partnership — and the IRS will treat it that way. Administrative formalities are not optional.
• GP interests transferred to the same trust that holds LP interests: If the grantor's GP interest is held in the same trust as the LP interests, the lack-of-control argument weakens significantly.
• Discounts applied without substantiation: The discount percentage must be supported by a qualified appraisal from a credentialed appraiser (ASA, ABV, or equivalent) who uses appropriate methodology (market approach, income approach, or both). A discount pulled from a trade publication without independent appraisal will not survive IRS challenge.

Where FLPs fit in a UHNW estate plan

FLPs are not alternatives to GRATs, SLATs, and IDGTs — they are typically used in combination with them. The FLP addresses different objectives:

A comprehensive UHNW estate plan for a family with $50M in a mix of real estate, operating business interests, and marketable securities might use:

• An FLP to hold the real estate and operating business — generating discounts on gifted LP interests and providing management continuity
• A GRAT to transfer pre-IPO equity in excess of the §7520 rate before the company's next valuation mark-up
• A SLAT to use remaining $15M exemption capacity for post-liquidity-event cash
• An IDGT installment sale to transfer the operating business interest to a dynasty trust for amounts in excess of available exemption

The interactions between these structures — which assets go where, what the sequencing is, how the grantor's income tax obligations flow — require a coordinating advisor who understands all four vehicles simultaneously. At $30M+, that coordination function is where most planning value is created or destroyed.

Working with a UHNW advisor on FLPs

FLP implementation requires at minimum:

• Estate planning attorney with FLP experience — to draft the partnership agreement, structure the GP entity, handle the formation documentation, and establish the non-tax business purpose at the outset. FLP drafting is not generalist work.
• Qualified independent appraiser (ASA, ABV) — to prepare defensible gift tax appraisals for LP interests at the time of each significant gift. The appraiser should have FLP experience specifically; general business valuators may not be familiar with the discount methodologies courts have accepted.
• CPA — for Form 1065 (partnership return), K-1 issuance, Form 709 (gift tax returns at each gift), and coordination of the grantor's personal return with the FLP's income allocations.
• Fee-only financial advisor — to determine which assets should be contributed to the FLP, how the FLP fits into the overall estate transfer strategy, and how gifted LP interests interact with the family's broader portfolio allocation and liquidity planning.

The fee-only RIA's specific role: coordinate the FLP's asset contribution and management with the overall estate plan, ensuring the combination of discounted transfers, GRAT funding, SLAT gifting, and IDGT installment sales work together toward the family's goals — not against each other. Without coordinated advice at this level, families often have technically correct legal structures that are financially suboptimal.

Sources

1. IRC § 2036 — Transfers with retained life estate: estate inclusion rules. The primary statutory basis for IRS challenges to FLPs where the grantor retained control or economic benefit. Text at Cornell Law School Legal Information Institute.
2. IRS Publication 561 — Determining the Value of Donated Property: qualified appraisal requirements for gifts of closely held interests, including the "qualified appraiser" and "qualified appraisal" definitions applicable to FLP interest gifts reported on Form 709.
3. IRS — 2026 tax inflation adjustments: annual gift tax exclusion $19,000 per recipient ($38,000 per couple); federal estate and gift tax exemption $15,000,000 per individual (OBBBA, permanent with inflation indexing). Values verified May 2026.
4. Estate of Kimbell v. United States, 371 F.3d 257 (5th Cir. 2004) — established the bona fide sale for adequate and full consideration standard for FLPs. The 5th Circuit held that a transfer qualifies for the §2043 exception when there is a legitimate non-tax purpose, the transfer is not a disguised testamentary device, and consideration is proportionate to contribution.
5. IRC § 2043 — Transfers for insufficient consideration: the bona fide sale exception to §2036. Transfers made for adequate and full consideration in money or money's worth are not subject to estate inclusion. Text at Cornell Law School Legal Information Institute.

Estate and gift tax law changes frequently. All exemption amounts, tax rates, and regulatory references reflect 2026 under current law (post-OBBBA). Discount percentages cited are illustrative ranges from estate planning practice; actual discounts depend on qualified appraisal in each specific case. Verify with qualified estate planning counsel before acting.