If you’re married, you probably share a lot with your spouse—your home, your finances, and your life in general. And if you’ve done your estate planning together, there’s a good chance you’ve chosen to use a joint living trust to manage your assets. Joint trusts are a popular choice for married couples because they’re simple, streamlined, and easy to maintain during life.
But here’s something that many people don’t realize: when one spouse dies, a joint trust doesn’t just keep running as-is. In fact, in many cases, it splits into two subtrusts—a survivor’s trust and a decedent’s trust.
If that idea makes your head spin a little, don’t worry. You’re not alone. Many people are surprised to learn that they will one day be managing “their own trust” after their spouse passes away—even if they set up their estate plan jointly.
In this article, we’ll walk you through what a survivor’s trust is, how it works, and why it’s such a valuable tool for protecting your legacy, your loved ones, and yourself.
Joint Trusts vs. Separate Trusts: A Quick Refresher
When couples create a trust, they can either:
- Each have their own separate trust, or
- Create a single joint trust that includes both spouses’ assets
There are pros and cons to both approaches. Separate trusts offer more flexibility and asset protection in some situations, but joint trusts tend to be easier to manage—especially when most of your accounts and property are owned jointly anyway.
With a joint trust, both spouses are usually named as trustees (the people managing the trust) and beneficiaries (the people benefiting from the trust). During your lifetime, you both retain full control over the assets in the trust—buying, selling, investing, withdrawing, and managing property just like normal.
But what happens when one spouse passes away?
Enter the Subtrusts: The Survivor’s Trust and the Decedent’s Trust
When the first spouse dies, a well-drafted joint trust may be designed to “split” into two new parts:
- The Survivor’s Trust – This holds the surviving spouse’s portion of the trust assets, plus anything that was identified as their separate property.
- The Decedent’s Trust – This holds the deceased spouse’s portion of the trust, including any assets they separately owned or contributed to the trust.
These subtrusts serve different purposes and follow different rules.
The survivor’s trust remains revocable—which means the surviving spouse can change it, dissolve it, add or remove assets, or name new beneficiaries. They have full control over this trust just like they did with the original joint trust.
The decedent’s trust, on the other hand, becomes irrevocable. That means it’s locked in place—no changes can be made to its terms or beneficiaries. The assets in this trust are managed according to the instructions that the deceased spouse put in place before they passed.
Why Split the Trust?
This might seem complicated at first glance. Why not just keep the original trust intact?
There are several important reasons for splitting a trust into a survivor’s and a decedent’s trust:
✅ 1. Asset Protection and Control
When someone passes away, they may want to ensure that their share of the assets is used in a specific way. For example, they might want to make sure their children from a previous marriage inherit certain funds—or that their surviving spouse is supported, but can’t give the money to a new partner.
The decedent’s trust allows them to preserve their wishes, even after death.
✅ 2. Tax Planning
In larger estates, splitting the trust can help minimize estate taxes by preserving both spouses’ federal or state exemptions. This strategy is more relevant in high net-worth situations, but the structure is still helpful in many plans.
✅ 3. Probate Avoidance
Both the survivor’s and decedent’s trust continue to operate outside of probate, which means that assets can pass to beneficiaries without going through court—even after the second spouse passes away.
✅ 4. Clarity and Continuity
Having a clearly defined structure helps avoid disputes between children, stepchildren, new spouses, and other family members. It provides a clear roadmap for what happens and who’s in charge of what.
What Goes Into Each Subtrust?
When the trust splits, the assets are typically divided based on how they were categorized when the trust was created. These categories may vary slightly depending on the state, but they usually include:
- Joint assets – Things owned together, like a home or joint bank account
- Community property – In community property states, this includes assets earned or acquired during marriage
- Separate property – Assets owned individually before the marriage or acquired as a gift/inheritance
Here’s a simplified example:
When the first spouse dies, the survivor’s trust might receive:
- One-half of any joint or community property
- All of the surviving spouse’s separate property
The decedent’s trust would receive:
- The deceased spouse’s one-half share of joint/community property
- All of the deceased spouse’s separate property
This ensures that each spouse’s wishes are honored, and that both portions of the trust are managed in accordance with their respective instructions.
The Survivor’s Trust: What You Need to Know
The survivor’s trust is now your trust—if you are the surviving spouse.
This can be both empowering and a little overwhelming. You may find yourself suddenly responsible for updating the trust, handling investments, or making distributions—often during a time of emotional grief.
Here’s the good news: You don’t have to navigate it alone.
Your estate planning attorney can guide you through exactly what your responsibilities are and how to manage your survivor’s trust effectively.
With a survivor’s trust, you can:
- Add or remove assets (e.g., sell a home, open a new account, etc.)
- Change beneficiaries (e.g., remove someone who is no longer in your life or add new grandchildren)
- Update trustees (e.g., appoint someone to help manage the trust if you no longer want to handle it alone)
- End the trust if it no longer serves your needs
Think of it as a living, breathing document that can adapt to your new chapter.
What About the Decedent’s Trust?
The decedent’s trust is a little more rigid. It is managed according to the instructions left by your late spouse.
You may still be the trustee (or one of them), and in many cases, you are also the beneficiary—meaning you can use the assets for your own support, health, and maintenance. However, you may not be able to change who ultimately inherits the property.
For example, if your spouse wanted the remainder of their assets to go to their children from a previous relationship after your death, that provision would remain intact—even if you later remarry or have a falling out with those heirs.
That’s the purpose of the decedent’s trust: to lock in those wishes and ensure they’re honored.
Is a Survivor’s Trust Right for You?
If you’re working with an estate planning attorney and setting up a joint trust, now is the time to ask about how your trust will function when one spouse dies.
Every couple is different. Some want maximum flexibility, others want to ensure specific inheritances, and many fall somewhere in between. A trust structure that includes a survivor’s trust and decedent’s trust can offer a best-of-both-worlds solution—allowing for control, support, and peace of mind for both spouses.
Take the Next Step
If you’re already the surviving spouse and find yourself managing a trust you didn’t expect to have—or if you’re still in the planning stage and want to make sure your trust works exactly how you want it to—we’re here to help.
Estate planning isn’t just about documents. It’s about designing a plan that fits your family, your goals, and your life—both today and down the road.
Ready to talk through your options? Schedule a consultation with our team today. We’ll explain your trust, walk you through your responsibilities, and help you make any updates or changes that reflect your new chapter.
