Trust · IDGT

Intentionally Defective Grantor Trust

  • trusts
執筆者
The Estate Guide Research Desk
監修者
Editorial standards review
最終確認日
課税年度
2026
管轄
United States (general; state law varies)

基本的な説明

An IDGT is an irrevocable trust designed so a transfer can be complete for gift and estate tax while the grantor remains the income-tax owner; the 'defect' is intentional only in that tax-classification sense.

Often paired with a gift and a note sale
Frequently paired with a gift and sale for a note, but neither step is automatic or risk-free.
Valuation and note terms need coordinated advice
Valuation, seed capital, note terms, cash flow, and retained powers require coordinated advice.
Grantor status can end
Grantor-trust status can end during life or at death, creating transition issues.

Who does what in a trust

  1. Grantor / settlor Creates the trust and contributes property under the governing terms.
  2. Trust Holds legal title and defines powers, standards, beneficiaries, and duration.
  3. Trustee Administers, invests, accounts, and distributes under the document and governing law.
  4. Beneficiaries Receive permitted benefits now or later under the distribution terms.
A general educational sequence. A real matter can follow a different path.

さらに深く学ぶ

関係者・時期・財産

Shift future appreciation while preserving grantor income-tax ownership.

作成者
A grantor making a gift, sale, or combination transfer.
受託者を務める人
Usually an independent or carefully limited trustee.
受益者になれる人
Often descendants and sometimes spouse under a separate design.
効力が生じる時期
When signed and funded; sale mechanics follow separately.
一般的に対象となる財産
Closely held interests; Appreciating investments; Income-producing assets able to service a note

税務・移転・支配

Grantor reports income while completed-transfer analysis aims to exclude future appreciation; gift reporting, valuation, interest, and basis consequences require modeling.

贈与税に関する考慮事項
Classify any lifetime contribution or transfer under current gift-tax law. Whether it is a completed gift, requires valuation or Form 709 reporting, qualifies for an exclusion, or affects GST allocation depends on the transfer, retained powers, beneficiary rights, timing, and governing terms.
所得税上の取り扱い
intentionally grantor trust for income tax
相続税の軽減可能性
high potential
GST プランニング
strong potential
資産保護の特徴
often meaningful for beneficiaries
支配・管理に関する考慮事項
Substitution and other grantor-trust powers need fiduciary and estate-inclusion safeguards; the grantor should not treat trust property as personal property.

プランニングの適合性と管理運営

State income tax, trust situs, creditor rules, and recognition of powers can affect results.

典型的な利用者
Business owners; High-net-worth families; Families with appreciating assets
活用が適している場合
The asset, cash flow, valuation evidence, and grantor resources support a real long-term transfer.
活用が適していない場合
The grantor needs the transferred property back, lacks tax-paying capacity, or the asset cannot service the structure.
州法上の考慮事項
State income tax, trust situs, creditor rules, and recognition of powers can affect results.
夫婦に多く活用されます
often useful
事業オーナーの活用
particularly relevant
高純資産層における活用
commonly suited
慈善目的の活用
not primary
相対的な複雑さ
very high
一般的な費用水準
very high

想定されるメリットと制限事項

想定されるメリット

  • Potential appreciation shift
  • Tax burn
  • Sale flexibility
  • GST planning

制限事項とトレードオフ

  • Valuation and audit risk
  • Cash-flow dependence
  • Complex documents and reporting
  • Basis tradeoff

よくある失敗

  1. No credible capitalization

  2. Informal note administration

  3. Grantor uses trust assets

  4. Ignoring status termination

How it can play out

After an independent appraisal and a documented seed gift, an owner sells a minority company interest to an IDGT for a note that the trustee services from actual distributions, with every payment and tax filing recorded.

例示を目的としたものです。事実関係・書類内容・日付・州法が異なれば、分析結果も変わります。

に関する質問 Intentionally Defective Grantor Trust

What determines how this trust works?

The signed governing terms, valid funding, retained powers, trustee authority, beneficiary rights, administration, tax classification, timing, and applicable state and federal law—not the trust name by itself.

Does this kind of trust automatically reduce tax or protect assets?

No automatic result follows from the label. Income, gift, estate, and GST tax classifications are separate questions, and creditor treatment depends on the settlor's and beneficiaries' rights, governing law, timing, and administration.

What should be verified before creating or funding the trust?

Verify the objective, governing instrument, fiduciaries, beneficiary standards, title and transfer restrictions, valuation, tax reporting, liquidity, governing state, expected administration, costs, and advice from appropriately qualified professionals.

Sources

最終確認日August 21, 2026

課税年度2026

管轄United States (general; state law varies)

  1. IRS Form 709 and instructionsInternal Revenue Service · United States—federal
  2. Electronic Code of Federal Regulations, estate and gift taxesU.S. Government Publishing Office · United States—federal
  3. Internal Revenue Code, estate and gift tax subtitleU.S. House Office of the Law Revision Counsel · United States—federal
  4. Uniform Trust CodeUniform Law Commission · United States (general; state law varies)

情報源は見直し日時点における一般的な教育的内容を裏付けるものです。公式資料は変更される場合があり、情報源へのリンクは個別事情に基づく専門家の分析に代わるものではありません。 法律・税務・投資・会計に関するアドバイスではありません。