What Is An A/B/C Trust?
An A/B/C Trust, often called an “A-B-C or ABC Trust,” is an estate planning strategy for married couples to reduce estate taxes and offer flexibility in asset distribution. It is also known as a “Marital Bypass Trust”.

Estate planning involves managing the orderly transfer of assets and money to recipients. This trust distributes assets among Trust A (Survivor’s Trust), Trust B (Bypass Trust), and Trust C (Qualified Terminable Interest Property Trust) following the first spouse’s death. Each trust serves a unique purpose.
A/B/C Trusts are estate planning tools that aim to minimize estate taxes while providing for a surviving spouse and future generations. This structure involves dividing assets into three trusts: A (Marital Trust), B (Bypass Trust), and C (Family Trust).
A/B/C Trust Explained
An A/B/C Trust is designed to reduce estate taxes while supporting the surviving spouse and future generations, especially for couples with substantial assets.
After the first spouse passes away, the assets are divided into Trust A (Survivor’s Trust), Trust B (Bypass Trust), and Trust C (Qualified Terminable Interest Property Trust). Each serves distinct purposes.
Trust A provides for the surviving spouse, allowing flexibility, while Trust B cannot be modified by the surviving spouse. Trust C’s assets are included in the taxable estate of the surviving spouse.
Upon the surviving spouse’s death, remaining assets are usually passed to secondary beneficiaries, like the grantor’s children. One advantage of the A/B/C Trust is its ability to reduce estate taxes by utilizing both spouses’ estate tax exemptions.
Assets like cash, securities, real estate, or properties can fund an A/B/C Trust. These assets are protected from creditors and unintended beneficiaries.
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Examples
Example #1
Dan and Nina have a $10 million estate. After Dan’s passing, $5 million is split between Trust A and Trust B. Trust A supports Nina, while Trust B benefits their children, bypassing Nina’s estate. Trust C holds $5 million and is exempt from estate taxes until Nina’s death.
Example #2
David and Rose have an $8 million estate. Upon David’s death, $4 million is split between Trust A and Trust B. Trust A supports Rose, while Trust B benefits their children. After Rose remarries and has two more children, these children do not inherit from Trust C, as they are not designated heirs.
Pros and Cons
Pros
- Estate Tax Minimization: Utilizes both spouses’ estate tax exclusions to reduce future tax liabilities.
- Asset Protection: Shields assets for future generations.
- Control: Provides control over asset distribution and management.
- Support for Surviving Spouse: Financial support and protection against creditors.
Cons
- Administrative Complexity: Requires ongoing management and professional assistance.
- Costs: Higher legal and administrative costs than other estate planning strategies.
A/B/C Trust vs A/B Trust
Below given is the comparison between A/B/C Trust vs A/B Trust.
Frequently Asked Questions (FAQs)
1. What is the difference between an ABC Trust and an Exemption Trust?
While both divide assets similarly, an Exemption Trust focuses on maximizing the estate tax exemption of the deceased spouse. The ABC Trust focuses on minimizing estate taxes while supporting the surviving spouse and protecting assets for future generations.
2. How does ABC Trust planning address the State Death Tax Gap?
ABC Trusts can help bridge the state death tax gap by increasing estate tax exemptions. While the B Trust may avoid federal taxes, some states impose additional estate taxes.
3. Is the ABC Trust revocable?
The A Trust is revocable and modifiable by the surviving spouse. Trusts B and C are irrevocable.
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