Trust · CST / Bypass

Credit Shelter / Bypass Trust

  • trusts
작성
The Estate Guide Research Desk
검토
Editorial standards review
최종 검토일
과세연도
2026
관할권
United States (general; state law varies)

간단한 설명

A credit shelter trust is funded at the first spouse's death to use available exclusion and benefit family without ordinary inclusion in the surviving spouse's estate when designed and administered correctly.

Also called a bypass, family or B trust
It is also called a bypass, family, or B trust in some plans.
Portability narrows the comparison but does not end it
Portability changes the comparison but does not replace GST, appreciation, control, or state-tax analysis.
The spouse can benefit without owning it
The surviving spouse may receive distributions under limited standards without owning the trust outright.

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.

더 깊이 알아보기

관계자, 시기 및 재산

Use first-spouse exclusion and preserve growth outside the survivor's taxable estate.

설정자
A spouse through a will or revocable trust, sometimes via formula funding.
수탁자 역할을 맡는 사람
Surviving spouse, co-trustee, independent trustee, or institution depending on powers.
수익자가 될 수 있는 사람
Often surviving spouse and descendants, with descendants as remainder beneficiaries.
효력 발생 시점
At the first spouse's death when funded.
일반적으로 고려되는 자산
Appreciating assets; Diversified securities; Business interests; Life-insurance or retirement proceeds only after specialized review

세금, 이전 및 통제권

Designed to use transfer-tax exclusion at the first death; trust income follows fiduciary income-tax rules and basis tradeoffs should be modeled.

증여세 관련 고려사항
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.
소득세 처리 방식
usually separate non-grantor trust after death; terms vary
상속세 절감 가능성
high potential where exposure exists
GST 계획
strong potential with allocation
자산 보호 기능
often meaningful for spouse and descendants
통제권 관련 고려사항
Distribution powers, appointment powers, trustee identity, and formula clauses determine access and inclusion risk.

플래닝 적합성 및 관리

State exclusion, QTIP options, principal-and-income law, and trust modification can change funding decisions.

일반적인 이용자
Married couples with estate or state tax exposure; Blended families; Multigenerational planners
적합할 수 있는 경우
Exclusion use, appreciation, GST planning, creditor protection, or remainder control outweighs added administration.
적합하지 않을 수 있는 경우
A simple portability plan better fits the estate and the basis/administration tradeoff.
주(州) 관련 고려사항
State exclusion, QTIP options, principal-and-income law, and trust modification can change funding decisions.
부부가 주로 고려하는 방식
specifically designed for married couples
사업주 활용
often useful with valuation and control planning
고액 자산가의 활용
often relevant
자선 목적 활용
possible but not primary
상대적 복잡도
high
일반적인 비용 수준
high

잠재적 장점과 한계

잠재적 장점

  • Captures first-spouse exclusion
  • Shelters future appreciation
  • Can preserve GST exemption
  • Remainder control

한계 및 트레이드오프

  • Separate tax and accounting
  • Possible less favorable basis later
  • Formula funding risk
  • Administration burden

흔한 실수

  1. Old formula overfunds trust

  2. No asset allocation plan

  3. Excessive spouse control

  4. Ignoring state estate tax

How it can play out

The first spouse's plan allocates selected appreciating assets to a bypass trust and the balance to a marital share, after tax and cash-flow review rather than automatic reliance on an old formula.

예시 목적에 한합니다. 사실관계, 문서 내용, 날짜, 주(州) 법률이 다르면 분석 결과가 달라질 수 있습니다.

관련 질문 Credit Shelter / Bypass 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

최종 검토일August 21, 2026

과세연도2026

관할권United States (general; state law varies)

  1. IRS Form 706 and instructionsInternal Revenue Service · United States—federal
  2. Internal Revenue Code, estate and gift tax subtitleU.S. House Office of the Law Revision Counsel · United States—federal
  3. Uniform Trust CodeUniform Law Commission · United States (general; state law varies)

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