Key Takeaways
- Assumes death order unknown if within 120 hours.
- Prevents estate property from double inheritance.
- Survivor must prove living 120 hours post-death.
- Overrides wills or trusts with clear instructions.
What is Uniform Simultaneous Death Act?
The Uniform Simultaneous Death Act (USDA) is a legal framework adopted by many U.S. states to address inheritance issues when two or more individuals die at the same time or within a short period, typically 120 hours. This act prevents complications in estate distribution by assuming each person predeceased the other unless evidence shows otherwise. It plays a crucial role in probate law and can intersect with concepts like an A-B trust to manage estate assets efficiently.
By clarifying the order of death, the USDA reduces disputes and unintended property transfers among heirs and beneficiaries.
Key Characteristics
The USDA standardizes simultaneous death scenarios to simplify estate administration. Its main features include:
- 120-Hour Survivorship Rule: Requires a person to survive another by at least 120 hours to inherit; otherwise, they are deemed to have predeceased the other.
- Clear and Convincing Evidence: Survival must be proven through reliable sources such as medical records or official documents.
- Overrides by Will or Trust: Wills or trusts can specify different survivorship requirements, superseding the USDA.
- Prevents Double Inheritance: Stops property from passing through multiple estates, reducing probate complexity.
- Exemptions: Does not apply to certain security registrations or when causing escheat to the state.
How It Works
The USDA applies when two people die simultaneously or within 120 hours without clear survivorship evidence. If the time of death order cannot be established, the law treats each as having predeceased the other. This ensures assets pass directly to each decedent’s heirs rather than through the other's estate, minimizing probate delays.
For example, when handling joint assets in trusts or wills, the USDA's rules guide executors and courts, unless the estate plan includes specific survivorship clauses. This approach aligns with principles found in contracts of utmost good faith, similar to the uberrimae fidei contract concept in financial dealings.
Examples and Use Cases
The USDA is particularly relevant in scenarios involving simultaneous deaths or unclear survival order. Common examples include:
- Car Accidents: When married couples die in crashes with uncertain timing, the USDA ensures their estates are distributed independently, preventing one spouse’s estate from absorbing the other’s assets.
- Airlines: Companies like Delta and American Airlines face complex liability and estate considerations in crashes involving multiple fatalities, where the USDA may apply.
- Trust Administration: Trustees managing rabbi trusts must consider the USDA's implications when beneficiaries die simultaneously.
Important Considerations
When planning your estate, it’s essential to understand how the USDA might affect your assets and beneficiaries. Including explicit survivorship clauses in your will or trust can override default USDA rules and better reflect your intentions.
Also, ensure your documents are accessible, such as storing them securely in a safe deposit box, to help executors and courts verify your wishes quickly. Consulting with estate planning professionals can help align your strategy with laws like the USDA to avoid unintended consequences.
Final Words
The Uniform Simultaneous Death Act helps prevent unintended estate transfers when multiple parties die closely in time by applying a clear 120-hour survivorship rule. Review your estate plans to ensure they account for this rule or include specific provisions to avoid probate complications.
Frequently Asked Questions
The Uniform Simultaneous Death Act is a law adopted by many U.S. states to handle inheritance issues when two or more people die at the same time or so close that the order of death can't be determined. It treats each person as having died before the other unless there's clear proof someone survived at least 120 hours, simplifying estate distribution.
The Act was created to avoid complications when people die within a short time of each other, like spouses in an accident. Without it, estates could pass through multiple transfers, causing disputes or property to go to the state. The USDA's 120-hour rule helps streamline probate and prevent unintended inheritance results.
Under the Act, a person must survive the other by at least 120 hours (five days), proven by clear evidence like medical records. If they don’t, they are legally considered to have died first, ensuring estates are handled separately and avoiding convoluted inheritance chains.
Nearly all U.S. states have adopted the Uniform Simultaneous Death Act in some form, either directly or through the Uniform Probate Code. Examples include Texas and Washington, and it typically applies to wills, trusts, and intestate estates unless specifically overridden.
Yes, if a will, trust, or other governing document explicitly states different survivorship terms, those instructions take precedence over the Act. This means individuals can customize how their estates are handled in simultaneous death situations.
Yes, the Act does not apply if its application would cause property to escheat to the state due to lack of heirs. Also, security beneficiary forms like those under the Uniform TOD Security Registration Act are exempt from USDA rules.
If spouses die simultaneously with no proof of surviving 120 hours, the Act treats each as having predeceased the other. Their separate property passes to their individual heirs, while jointly owned property is distributed according to its ownership rules, avoiding double transfers through estates.

