Key Takeaways
- Irrevocable trust excluding assets from taxable estate.
- Grantor pays income taxes, boosting trust growth.
- Assets and appreciation grow estate-tax free.
- Allows tax-free wealth transfer to beneficiaries.
What is Intentionally Defective Grantor Trust (IDGT)?
An Intentionally Defective Grantor Trust (IDGT) is an irrevocable trust that excludes transferred assets from your taxable estate for estate and gift tax purposes while treating you as the owner for income tax purposes. This structure requires you to pay the trust’s income taxes, effectively allowing the trust assets to grow tax-free for beneficiaries. The IDGT leverages specific powers that trigger grantor trust rules under the Internal Revenue Code, making it a powerful tool for estate planning.
Understanding the ability to pay taxation is essential when using an IDGT, as you remain responsible for income taxes on trust earnings despite the assets being outside your estate.
Key Characteristics
IDGTs combine estate tax exclusion with income tax responsibility, offering unique advantages. Key features include:
- Irrevocable Nature: Once funded, the trust generally cannot be altered, ensuring assets and appreciation are removed from your estate.
- Grantor Trust Status: You pay income taxes on trust income, enhancing wealth transfer without reducing trust principal.
- Specific Powers Retained: Powers like asset substitution or borrowing trigger grantor trust rules, maintaining income tax liability.
- Tax Benefits: Future appreciation occurs outside your estate, reducing estate tax exposure and capital gains tax for heirs through basis step-up strategies.
- Funding Flexibility: Assets can be gifted or sold to the trust, often using promissory notes with applicable federal rates for leverage.
How It Works
You transfer assets to the IDGT either by gift or sale; gifts use part of your lifetime exemption, while sales typically involve a promissory note at a low-interest rate. Because the trust is a grantor trust for income tax purposes, you remain liable for income taxes on earnings, which benefits beneficiaries by preserving the trust’s principal. Meanwhile, the assets and their appreciation are excluded from your estate, effectively reducing estate taxes.
For example, the ability to substitute assets within the trust allows you to swap low-basis assets for high-basis ones, minimizing future capital gains taxes for your heirs. This strategy requires careful planning and understanding of IRS rules to avoid unintended consequences.
Examples and Use Cases
IDGTs are popular in scenarios involving high-growth assets or business interests. Consider these examples:
- Airlines: Executives holding shares in Delta may use an IDGT to transfer appreciating stock while paying income taxes personally, allowing tax-free growth for heirs.
- Growth Stocks: High-potential equities from the best growth stocks can be transferred into an IDGT to maximize estate tax efficiency.
- Low-Cost Index Funds: Diversified portfolios using low-cost index funds can be gifted to an IDGT, leveraging tax advantages over time.
Important Considerations
While IDGTs offer powerful estate and income tax planning benefits, you must be prepared to pay the trust’s income taxes personally, which requires sufficient liquidity. Additionally, proper valuation of transferred assets is critical to withstand IRS scrutiny. Consult professionals to structure note terms and trust powers correctly to maintain the intended tax treatment.
Integrating an IDGT with your broader financial plan, including investments like those in best ETFs, can optimize wealth transfer and tax efficiency. Always assess your personal financial situation and estate goals before implementation.
Final Words
An IDGT lets you shift asset growth out of your taxable estate while paying income taxes personally, effectively boosting wealth passed on to beneficiaries. Consult your estate planning advisor to evaluate if incorporating an IDGT aligns with your long-term tax and legacy goals.
Frequently Asked Questions
An IDGT is an irrevocable trust designed to exclude assets from the grantor's taxable estate for estate and gift tax purposes, while treating the grantor as the owner of the trust assets for income tax purposes. This means the grantor pays the income taxes on the trust earnings, allowing the trust assets to grow without being included in the taxable estate.
By transferring assets to an IDGT, those assets and their future appreciation are removed from the grantor's estate, which lowers the overall estate tax liability. The transfer is treated as a completed gift, using the federal lifetime gift tax exemption, so the growth occurs outside the estate.
The trust is 'intentionally defective' because it includes certain retained powers, like swapping trust assets or borrowing from the trust, which cause the grantor to be treated as the owner for income tax purposes. This intentional defect allows the grantor to pay the income taxes, benefiting the trust beneficiaries.
The grantor pays the trust's income taxes, which effectively acts as an additional tax-free gift to the trust. Also, sales of assets to the IDGT are not recognized as taxable income events, allowing tax-free wealth transfer and tax-free growth of trust assets for beneficiaries.
Yes, assets held within an IDGT may be shielded from creditors, offering a layer of protection for the trust assets while still excluding them from the grantor's estate.
When the grantor pays the income taxes on the trust's earnings, it preserves the trust principal and allows the assets to grow without reduction for taxes. This effectively increases the wealth passed on to beneficiaries without additional gift tax consequences.
Appreciating assets, such as stocks or real estate, are commonly transferred to an IDGT because their future growth occurs outside the estate. This maximizes estate tax savings while allowing the trust to grow tax-free for beneficiaries.
An IDGT is irrevocable, meaning once assets are transferred, the grantor cannot revoke the trust. This irrevocability is key to excluding the assets from the grantor's estate for estate tax purposes.


