Complete Guide to Estate Planning

You've built significant wealth—maybe through a successful business, smart investments, or decades of disciplined saving. Now you're wondering how to pass that wealth to your children without the IRS claiming 40% through estate taxes. High-net-worth families face this challenge constantly, and one particularly effective (if oddly named) solution keeps appearing in sophisticated estate plans: the Intentionally Defective Grantor Trust.

Yes, "defective" is actually in the name. But here's the thing—this "defect" is completely intentional and entirely legal. When structured correctly, an IDGT can save your family millions in transfer taxes.

What Is an Intentionally Defective Grantor Trust?

Think of an IDGT as a trust that plays by two different rulebooks simultaneously. You set it up as irrevocable, transferring assets out of your taxable estate. That's rulebook number one: estate tax law. Under these rules, you've made a completed gift. The assets no longer belong to you. They won't be taxed when you die.

But here's where it gets interesting. For income tax purposes—rulebook number two—the IRS still considers you the owner. You personally report every dollar of income, every capital gain, every dividend the trust generates on your Form 1040. The trust essentially doesn't exist in the eyes of income tax law.

Why would anyone want this arrangement? The "defect" (really just a mismatch between income and estate tax treatment) creates powerful tax arbitrage. You're paying income taxes on...