What Is an Irrevocable Life Insurance Trust (ILIT)? A Guide for Estate-Planning Attorneys

For clients whose estates include significant life insurance — particularly policies with death benefits large enough to trigger estate tax exposure — the irrevocable life insurance trust is one of the most effective planning tools available. Used correctly, an ILIT keeps the death benefit outside the client's taxable estate, directs the proceeds to beneficiaries on the grantor's terms, and avoids probate entirely.

But an ILIT that is created and never properly funded — or funded with errors in structure or administration — delivers none of those outcomes. This guide covers the ILIT's core mechanics, how it gets funded, and the funding mistakes attorneys and paralegals should anticipate and prevent.

How an Irrevocable Life Insurance Trust Is Structured

An irrevocable life insurance trust is a separately created legal entity that owns one or more life insurance policies on the grantor's life. Because the grantor does not own the policy, the death benefit is not included in the grantor's taxable estate under IRC §2042. The proceeds flow to the trust at the grantor's death, distributed according to the terms the drafting attorney built in.

The ILIT has three parties: the grantor (who creates and funds the trust), the trustee (who administers it), and the beneficiaries (who receive distributions). The grantor cannot serve as trustee — doing so would give them "incidents of ownership" over the policy under the IRS rules, pulling the death benefit back into the taxable estate and defeating the structure's purpose.

The trust is irrevocable by design. Once established, the grantor cannot reclaim the policy, unilaterally change beneficiaries, borrow against the cash value, or direct the trustee's actions in ways that create incidents of ownership. That irrevocability is what generates the estate tax benefit — and it's what makes proper funding essential to get right the first time.

The Two Pathways for Funding an ILIT

When it comes to funding an irrevocable life insurance trust, practitioners have two options, and the choice carries meaningful tax implications.

New policy approach. The more common and generally preferred method is for the ILIT itself to apply for and own a new life insurance policy from the outset. The trustee — not the grantor — is the applicant and policy owner. Because the grantor never personally owned the policy, the three-year lookback rule under IRC §2035 does not apply. The death benefit is outside the taxable estate from day one.

Transferred policy approach. An existing policy owned by the grantor can be assigned to the ILIT by transfer of ownership. The transfer is legally valid, but IRC §2035 creates a significant trap: if the grantor dies within three years of the transfer, the full death benefit is pulled back into the taxable estate as if the transfer never happened. This rule exists to prevent deathbed transfers of appreciated life insurance. Practitioners should ensure this three-year exposure is clearly communicated to clients considering a policy transfer.

How Premiums Are Paid: Crummey Powers and the Gift Tax Exclusion

Once the ILIT owns the policy, premiums must be paid to keep the coverage in force. The grantor cannot pay the insurance company directly — that would create incidents of ownership. Instead, the grantor makes cash contributions to the trust, and the trustee uses those contributions to pay the premiums.

For those annual contributions to qualify as present-interest gifts under IRC §2503(b) — and therefore fall within the per-recipient annual gift tax exclusion (currently $19,000 for 2026) — the trust must include Crummey withdrawal rights. Crummey powers give each trust beneficiary a limited window, typically 30 days, to withdraw their proportionate share of each contribution before the trustee applies the funds to the premium.

The annual Crummey process works as follows:

1. The grantor contributes cash to the trust.
2. The trustee sends written Crummey notices to each beneficiary, informing them of their withdrawal right and the window to exercise it.
3. After the withdrawal period closes (beneficiaries almost never exercise this right), the trustee pays the premium from the trust funds.
4. The trustee retains written records of each notice sent and the expiration of each withdrawal period.

The Crummey notice step is not optional formality. If it is skipped, the contributions may be treated as taxable gifts in excess of the annual exclusion, consuming the grantor's lifetime exemption or generating a gift tax liability. Trustees — often family members chosen by the grantor — frequently are not aware of this obligation. Advising the trustee on Crummey administration at the time of signing, and confirming it in writing, is part of competent ILIT representation.

Common ILIT Funding Mistakes Attorneys Should Anticipate

The irrevocable life insurance trust definition is well understood in practice, but execution failures are predictable — and they overlap with the broader trust funding mistakes law firms make. Here are the errors that appear most often.

Grantor named as trustee. This is sometimes a drafting error and sometimes something the client arranges post-signing because it seems more convenient. Either way, it creates incidents of ownership and eliminates the estate tax exclusion.

Policy ownership never transferred to the trust. The ILIT is drafted, executed, and filed — but the life insurance policy remains owned individually by the grantor. If the grantor dies before the ownership transfer is completed, the full death benefit is included in the taxable estate.

Premium contributions paid directly to the insurer. The grantor pays the insurance company directly rather than contributing cash to the trust for the trustee to apply. Direct premium payments can constitute incidents of ownership. The correct structure always routes contributions through the trust.

Crummey notices never sent. The trust agreement requires them, the attorney explained the obligation at signing, and then the trustee — a non-professional family member — does not follow through year after year. Contributions to the trust that are not paired with proper Crummey notice documentation may not qualify as present-interest gifts.

No records maintained of Crummey administration. The IRS can request documentation for each year the annual gift tax exclusion was claimed on contributions to the trust. A trustee without records of notices sent, withdrawal windows, and expiration dates cannot substantiate the exclusion if audited.

Why the ILIT Remains a Core Planning Tool

For clients whose estates approach or exceed the federal estate tax exemption, an ILIT can remove a large, illiquid asset — the death benefit — from the taxable estate entirely while keeping the proceeds within the client's larger plan. The trust can be structured to provide income to a surviving spouse without triggering estate inclusion in the survivor's estate, or to hold proceeds for children or other heirs over time.

The ILIT also solves a liquidity problem: a policy owned by the trust provides funds at the grantor's death to pay estate taxes on other illiquid assets — a family business, real property — without those proceeds themselves being subject to estate tax. That combination of estate tax exclusion and liquidity planning is why the ILIT remains a standard tool in sophisticated estate planning even as exemption amounts shift.

Regardless of where a client's estate falls relative to current exemption thresholds, proper ILIT funding mechanics are non-negotiable. For firms managing volume, a dedicated trust funding partner can absorb the policy-ownership transfers and documentation these plans demand. The structure only performs as designed if the policy is owned correctly, premiums flow through the trust, and Crummey administration is maintained without gaps.

Key Takeaways

• An irrevocable life insurance trust owns a life insurance policy outside the grantor's taxable estate, excluding the death benefit from estate tax under IRC §2042.
• The grantor cannot serve as trustee — that creates incidents of ownership and eliminates the tax benefit.
• New policies purchased directly by the ILIT are outside the estate immediately; policies transferred from the grantor are subject to a three-year lookback under IRC §2035.
• Premium contributions must flow through the trust and be preceded by proper Crummey withdrawal notices to each beneficiary.
• Crummey administration is an ongoing annual obligation — notices must be sent and documented each year contributions are made.
• Common ILIT funding mistakes include incomplete policy transfers, direct premium payments by the grantor, and failure to maintain Crummey notice records.
• The ILIT's estate tax and liquidity benefits only materialize if the funding mechanics are executed correctly from the outset and maintained over time.