Intentionally Defective Grantor Trust

Intentionally Defective Grantor Trust (IDGT): Transferring Wealth Outside Your Estate Without Using Your Gift Tax Exemption

An Intentionally Defective Grantor Trust is one of the most technically sophisticated and tax-efficient tools in advanced estate planning. It removes assets and all future appreciation from the grantor's taxable estate while allowing the grantor to pay income tax on the trust's earnings, which effectively transfers additional wealth to beneficiaries free of gift tax with every tax payment made.

An Intentionally Defective Grantor Trust (IDGT) is an irrevocable trust that is structured to be “defective” for income tax purposes while remaining fully effective for estate and gift tax purposes. The “defect” is entirely intentional and is the source of the trust's most powerful planning benefits.

Here is what “defective” means in this context. Under the federal income tax rules in Subpart E of the Internal Revenue Code, certain retained powers or interests cause a trust to be treated as though the grantor still owns its assets for income tax purposes. When those powers are present, the grantor pays income tax on everything the trust earns, even though the assets are legally held by the trust and not by the grantor.

At the same time, under the estate and gift tax rules, the trust is fully irrevocable. The assets transferred into the trust are legally removed from the grantor's taxable estate. Any future appreciation in those assets occurs entirely outside the estate. The trust is defective for one set of tax rules and fully effective for another, and that gap between the two is precisely what the strategy exploits.

Every dollar of income tax the grantor pays on the trust's earnings is a dollar that would otherwise remain in the estate and be taxed at death. Because paying a beneficiary's tax obligation is not treated as a taxable gift, the grantor's annual income tax payments on the trust's earnings are effectively additional tax-free transfers of wealth to the trust's beneficiaries.

An IDGT can be funded in two ways, and the choice between them determines whether the transfer uses any of the grantor's gift tax exemption.

Strategy 1: Gifting Assets to the IDGT

The grantor can gift assets directly to the IDGT. Because the trust is irrevocable and the assets are removed from the grantor's taxable estate, the gift uses a portion of the grantor's federal gift tax exemption. Once the assets are in the trust, all future appreciation occurs outside the estate. The grantor pays income tax on the trust's earnings throughout the trust's existence, which further reduces the taxable estate without additional gift tax consequences.

Gifting to an IDGT is commonly used as an initial “seed” transfer to capitalize the trust before an installment sale is implemented. The trust needs to hold enough assets to demonstrate that it is a creditworthy counterparty capable of meeting the installment note obligations.

Strategy 2: The Installment Sale to the IDGT

The installment sale is the more powerful and more commonly used IDGT strategy. Rather than gifting assets to the trust, the grantor sells assets to the IDGT in exchange for a promissory note bearing interest at the applicable federal rate (AFR). Because the IDGT is a grantor trust for income tax purposes, the sale between the grantor and the trust is not a taxable event; no capital gains tax is triggered at the time of sale.

The trust pays back the note over time using the income generated by the sold assets. If the assets grow at a rate above the AFR, the excess appreciation remains in the trust and ultimately passes to the beneficiaries entirely free of estate and gift tax. The note itself, if unpaid at the grantor's death, reduces the grantor's taxable estate by the outstanding balance. The installment sale allows the grantor to transfer the full economic upside of an appreciating asset to the trust's beneficiaries without using any gift tax exemption beyond the initial seed gift.

Step 1: Create and Seed the Trust

The grantor establishes the IDGT as an irrevocable trust and makes an initial gift to the trust, typically equal to approximately 10% of the value of the assets to be subsequently sold. This seed gift establishes the trust's net worth and demonstrates that the trust has independent economic substance capable of meeting its installment note obligations. The seed gift uses a portion of the grantor's gift tax exemption.

Step 2: Identify the Grantor Trust Powers

The trust is drafted to include one or more powers that cause it to be treated as a grantor trust for income tax purposes. Common grantor trust powers include the grantor's right to substitute assets of equivalent value, the power to borrow from the trust without adequate security, the power to reacquire trust assets by substituting other assets of equivalent value, or the retention of certain administrative powers. The specific power used must be carefully chosen to achieve grantor trust status without inadvertently causing the assets to be included in the grantor's estate for estate tax purposes.

Step 3: Sell Assets to the Trust on an Installment Note

The grantor sells the target assets, typically a business interest, investment portfolio, or other appreciating property, to the IDGT in exchange for a promissory note bearing interest at or above the applicable federal rate. Because the IDGT is a grantor trust, the sale does not trigger capital gains tax. The trust now holds the assets; the grantor holds the note. The trust pays interest and principal on the note over time using income and proceeds from the transferred assets.

Step 4: The Grantor Pays Income Tax on Trust Earnings

Throughout the trust's existence, the grantor pays income tax on all income and gains generated by the trust's assets, even though those assets are legally owned by the trust. Each income tax payment further reduces the grantor's taxable estate without being treated as an additional taxable gift. This ongoing tax subsidy is one of the IDGT's most powerful features and compounds significantly over time for trusts with substantial earnings.

Step 5: Appreciation Accumulates Outside the Estate

Because the assets were transferred to the trust, all future appreciation occurs outside the grantor's taxable estate. If the assets grow at a rate above the AFR charged on the installment note, the excess growth belongs to the trust and ultimately passes to the beneficiaries entirely free of estate and gift tax. The greater the spread between the actual growth rate and the AFR, the more wealth is transferred to beneficiaries tax-free.

•      Estate tax removal of transferred assets: Assets sold or gifted to the IDGT are removed from the grantor's taxable estate for Vermont and federal estate tax purposes. All future appreciation on those assets also occurs outside the estate.

•      No capital gains tax on the installment sale: Because the IDGT is a grantor trust, the sale of assets to the trust is not a taxable event for income tax purposes. No capital gains tax is owed at the time of the sale, even if the assets have appreciated significantly.

•      Tax-free wealth transfer through income tax payments: The grantor's payment of income tax on the trust's earnings effectively subsidizes the trust's growth and transfers additional wealth to beneficiaries without triggering gift tax.

•      No gift tax on the installment sale: Because the grantor receives full and adequate consideration in the form of the promissory note, the installment sale does not use the grantor's gift tax exemption beyond the initial seed gift. The appreciation that exceeds the AFR passes to beneficiaries entirely outside the gift tax system.

•      Estate tax reduction through the unpaid note: If the promissory note has not been fully repaid at the grantor's death, the outstanding balance reduces the grantor's taxable estate, providing an additional estate tax benefit.

•      Vermont estate tax reduction: For Vermont families with estates above the $5,000,000 Vermont exemption threshold, an IDGT removes assets from the Vermont taxable estate and eliminates Vermont estate tax on those assets and all future appreciation.

An IDGT is most effective for assets that meet the following criteria.

•      High growth potential: The greater the spread between the actual growth rate and the AFR, the more wealth transfers to beneficiaries tax-free. Assets expected to significantly appreciate over time produce the greatest benefit.

•      Valuation discounts available: Assets such as closely held business interests or minority interests in real estate holding companies may qualify for valuation discounts for lack of control or lack of marketability, allowing more value to be transferred within the gift tax exemption or at a lower note value.

•      Income-producing: The trust needs to generate sufficient income to service the installment note. Assets that produce income, or that can be structured to produce returns sufficient to meet note obligations, are better candidates than non-income-producing assets.

•      Not needed by the grantor for living expenses: Because the assets are permanently transferred to the trust, they should be assets the grantor can afford to part with. The grantor receives note payments in return, but the economic character of the assets changes permanently.

An IDGT is a sophisticated strategy best suited to the following circumstances.

•      You have a large taxable estate and want to remove appreciating assets from that estate without triggering capital gains tax on the transfer.

•      You hold a closely held business interest, real estate, or other highly appreciated asset that you expect to continue growing and that is eligible for valuation discounts.

•      You want to transfer significant wealth to your children or grandchildren without using additional gift tax exemption beyond the initial seed gift.

•      You can afford to pay income tax on the trust's earnings, which is the mechanism through which the additional tax-free transfer occurs.

•      You are comfortable with an irrevocable transfer of assets out of your estate and your financial plan does not require those assets for your own support.

•      You want to maximize the use of current valuation discounts and current AFR levels, both of which affect the efficiency of the installment sale structure.

Why is the trust called “intentionally defective”?

The trust is called intentionally defective because it is deliberately drafted to be defective for income tax purposes, meaning the grantor is treated as the owner of the trust's assets for income tax purposes and must pay tax on the trust's earnings. This “defect” is entirely intentional and is the source of the trust's most powerful planning benefit: the grantor's income tax payments effectively reduce the estate without triggering gift tax. At the same time, the trust is fully effective for estate and gift tax purposes, meaning the assets are removed from the grantor's taxable estate.

How is an IDGT different from a regular irrevocable trust?

A regular irrevocable trust is treated as a separate taxpayer for both income tax and estate tax purposes. The trust pays its own income tax and the grantor has no further income tax obligations related to the trust. An IDGT is a grantor trust for income tax purposes, meaning the grantor pays income tax on the trust's earnings even though the assets are legally owned by the trust. This grantor trust status is the “defect” that creates the additional estate-reduction benefit and enables the tax-free installment sale structure.

What is the applicable federal rate and why does it matter?

The applicable federal rate (AFR) is the minimum interest rate that must be charged on a promissory note between related parties to avoid the IRS treating the transaction as a gift. The AFR is set monthly by the IRS and varies based on the note's term. In the IDGT installment sale structure, the note must bear interest at or above the AFR. The wealth transfer benefit of an IDGT increases as the actual growth rate of the trust's assets exceeds the AFR; any growth above the AFR passes to beneficiaries free of estate and gift tax. Low AFR environments make IDGT installment sales particularly powerful.

Does the grantor lose access to the assets transferred to an IDGT?

Substantially yes. Because the IDGT is an irrevocable trust, the grantor does not have direct ownership or unrestricted access to the transferred assets. However, the installment sale structure gives the grantor an income stream through the note payments, and some IDGT structures include provisions that allow the grantor to substitute assets of equivalent value, providing some flexibility. The grantor must be financially prepared to part with the transferred assets; the note payments are not a substitute for ownership.

What happens to the IDGT's grantor trust status when the grantor dies?

Grantor trust status terminates at the grantor's death. At that point, the trust becomes a separate taxpayer for income tax purposes and begins paying its own income taxes. The trust's assets remain outside the grantor's estate for estate tax purposes. If the installment note is still outstanding at the grantor's death, the outstanding balance is included in the grantor's taxable estate as an asset, but it also reduces the estate by the same amount because it is an asset of the estate rather than a taxable transfer. We address these post-death mechanics in the drafting process.

Can an IDGT be used with a Vermont LLC or closely held business interest?

Yes, and for Vermont families with closely held business interests, an IDGT combined with an LLC or limited partnership structure is one of the most powerful estate tax planning strategies available. The business interest is restructured as a minority interest in an LLC or limited partnership, which may qualify for valuation discounts for lack of control and lack of marketability. That discounted interest is then sold to the IDGT at its discounted value, allowing more economic value to be transferred for each dollar of note consideration. All future appreciation in the business then occurs outside the estate.

Is an IDGT right for my family?

An IDGT is most appropriate for families with estates substantially above the Vermont $5,000,000 exemption or the federal exemption; who hold appreciating assets they can afford to permanently transfer; who are willing and able to pay income tax on the trust's earnings; and who want to maximize the amount of wealth transferred to the next generation outside the estate tax system. It is not the right tool for every family, and it requires careful legal and tax structuring to work as intended. We will give you an honest assessment of whether an IDGT belongs in your plan during your Peace of Mind Planning Session.

An Intentionally Defective Grantor Trust is one of the most technically demanding instruments in estate planning. The grantor trust powers must be carefully chosen to achieve income tax defective status without inadvertently causing estate tax inclusion. The installment note must be properly structured to satisfy IRS requirements for adequate consideration. The seed gift must be appropriately sized. And the overall structure must be integrated with the grantor's broader estate plan, including any existing trusts, business succession planning, and Vermont estate tax exposure.

At Will and Trust Planning, we design IDGT strategies as part of comprehensive estate tax plans for Vermont families with significant assets. We begin with a thorough analysis of your estate, your assets, and your planning goals, model the specific numbers for your situation, and then draft the trust document and associated instruments with the precision this strategy requires.

Contact Will and Trust Planning Today

For personalized advice on estate planning, including strategies to minimize or avoid probate, contact Will and Trust Planning today. Our experienced estate planning attorneys can help you understand your options, draft essential documents, and create a plan that protects your assets and achieves your goals.