The day you sign your special needs trust is a real milestone. After all the conversations and decisions, you finally have the document in hand. That feeling of relief is one of the best parts of this work.
But here is something we tell families all the time: a signed trust and a working trust are not the same thing. A document only protects your child if it is set up to do its job at the exact moment you can’t be there to manage things yourself. The trust has to be the right type, drafted for your particular child, integrated with the rest of your plan, and a trustee chosen who is willing and able to run it.
This guide walks through what a “working trust” involves so you can feel confident that the plan you put in place will hold when it matters most.
A signed trust and a working trust are not the same thing
The most common misunderstanding we see is the belief that the goal is to get the document done. Getting it done is the start, not the finish. The real question a special needs trust has to answer is this: when something happens to you, will the right money reach your child in the right way – without costing them the benefits they rely on?
That outcome is decided during setup. And when a plan doesn’t work, it is almost never because a family did something wrong. It’s because one piece of the setup wasn’t connected to the primary estate plan: a beneficiary form that was never updated, an account that pointed to the wrong place, a trust that was drafted but never tied into the larger plan. These are structural gaps – and the good news is that structural gaps are entirely fixable when you know where to look.
Start with the right kind of trust
There are two main types of special needs trusts, and the difference comes down to whose money goes into them.
A third-party special needs trust is the one most families create when they’re planning for a child or family member with a disability. It holds assets that come from anyone other than the disabled person(e.g. parents and often from others, like grandparents who want to be able to help). A properly drafted third-party trust has no Medi-Cal payback requirement, which means whatever is left when your child passes can go to the people or causes you choose.
A first-party special needs trust (sometimes called a d4A trust) holds assets that already belong to the person with a disability: an inheritance someone left to them directly, a legal settlement, or back benefits. Because the money is legally theirs, this type of trust carries a Medi-Cal payback provision: when the person passes, the state is repaid for Medicaid benefits it provided before anything else is distributed.
The setup lesson here is simple but important: you want assets flowing into a third-party trust whenever possible, not landing in your child’s name and forcing a first-party fix later. A surprising amount of “setting up the trust to work” is really about making sure money takes the right path to get there.
Connect the trust to the rest of your estate plan
This is the step that gets missed most often, and it’s worth slowing down for.
During your lifetime, a third-party special needs trust is essentially an empty container. It does nothing until assets reach it – and they usually reach it at your death, not before. That’s why we talk about a special needs trust being connected to your estate plan rather than fully funded during your life. The whole job of setup is making sure the connections are in place so the right assets are placed into it when the time comes.
There are two main ways assets connect to the trust:
• Your living trust. Assets titled in your living trust – including real estate titled in the trust – are distributed according to its terms. Those terms can direct your child’s share into the third-party special needs trust instead of handing it to them outright.
• Beneficiary designations. Retirement accounts like 401(k)s and IRAs can’t be retitled into a living trust during your life – they connect through their beneficiary designations instead. Life insurance works the same way. These forms can name the third-party special needs trust so the money flows the right way rather than directly to your child.
Here’s one type of failure we help families avoid: a beautifully drafted special needs trust sitting alongside a 401(k) that still names the child directly – or names a sibling, informally, “to take care of” their brother or sister. Either one can quietly undo the entire plan. The document is perfect; the connection is broken. Checking those beneficiary forms seems small, but it can have huge consequences.
Don’t accidentally disqualify the benefits you’re protecting
The primary reason a special needs trust exists is to provide for your child without disrupting the public benefits they depend on. Those benefits come with strict limits on what a person can own, and it’s essential to pay attention to those limits.
| 2026 figure | What it means |
| SSI resource limit: $2,000 (individual) | Unchanged for decades. Money in your child’s own name above this can interrupt their SSI. |
| Medi-Cal asset limit: $130,000 (individual) | Reinstated January 1, 2026 for programs with an asset test. For Medi-Cal linked to SSI, the $2,000 SSI limit still applies. |
| ABLE contribution limit: $20,000 / year | Up from $19,000 in 2025. Up to $100,000 in an ABLE account is not counted against SSI. |
For many people with disabilities, Medi-Cal isn’t just health coverage – it’s the gateway to services like in-home support services (IHSS) that make daily life possible. Losing it, even temporarily, can be far more disruptive than the dollar amount suggests.
A properly drafted and connected third-party special needs trust solves this: assets held in it don’t count toward those limits. Your child gets the benefit of the money without the money being “theirs” in a way that disqualifies them from benefits.
Two well-meaning “shortcuts” tend to cause the most trouble. The first is leaving money to your child directly, which can push them over the limits overnight. The second is leaving it to a sibling “to take care of” your child with a disability. The second does not necessarily cause an overnight issue for your child’s benefits. In fact, it might feel simpler and more loving, but it carries its own risk. If that sibling is ever sued, divorces, or passes away, the money meant to support your child with a disability is exposed. Instead of keeping assets protected in a third-party special needs trust that can be used to ensure your child’s quality of life for their lifetime, that money may now be cut in half or completely lost. Additionally, you’ve just asked one child to track, forever, which dollars are really theirs and which belong to their sibling. That’s not protection for either of them.
None of this is about distrusting your family. It’s about not handing one of your children a responsibility the law won’t protect, when a trust can carry that weight instead.
Choose a trustee who can do the job
The trustee is the person who controls distributions – and distributions are exactly where benefits are won or lost. Paying for the wrong thing, or handing cash directly to your child, can reduce their SSI or endanger other benefits they depend on. A good trustee has to understand and be willing to work within those rules, not just have good intentions.
Families generally choose among three approaches:
• A family member who knows and loves your child but may not know the benefit rules.
• A professional trustee who knows the rules and works with them often but doesn’t know your child personally.
• A combination – often the most workable choice – where a professional handles the technical work and a family member is empowered to give input and stay close to your child’s needs.
Whatever you choose, always include a mechanism for naming a successor trustee. A special needs trust may need to run for decades, and the person who is right for the job today may not be able to serve when the time finally comes. Building in a backup keeps the plan from stalling at the worst possible moment.
Write a letter of intent
A letter of intent may be the most human aspect of the whole plan. It tells whoever steps in who your child actually is: their routines, what soothes them and what sets them off, their medical history and providers, what a good day looks like, and your hopes for their life.
Think of it this way: the trust says what the money is allowed to do. The letter of intent tells the story of who it’s for. Though the letter of intent is not legally binding, it provides important guidance to your successor trustee, helping them understand your wishes and make decisions that support the quality of life you envision for your child..
Consider an ABLE account alongside the trust
One of the most common questions we hear is whether an ABLE account replaces the need for a special needs trust. It doesn’t. They do different jobs, and many families use both.
An ABLE account is a tax-advantaged account your child can use directly for everyday disability-related expenses. A few 2026 details are worth knowing:
· the annual contribution limit is now $20,000
· the first $100,000 in the account doesn’t count as a resource for SSI eligibility purposes
· as of January 1, 2026 eligibility expanded to anyone whose disability began before age 46 (it used to be 26). That last change means a lot more families now qualify.
The simplest way to think about it: an ABLE account is well suited forfunds your child can access for day-to-day needs, while the special needs trust handles larger assets and long-term protection. Used together, they cover more ground than either one alone.
Keep it working as life – and the law – changes
Even a perfectly built plan isn’t finished, because the world it was built for keeps moving. The Medi-Cal asset limit that returned on January 1, 2026 is a perfect example: a plan created during the years when there was no asset limit may need a review, now that the limit is back.
Families change too. A new diagnosis, a trustee who moves out of state, a child who turns 18, a beneficiary form that wasn’t updated – any of these can affect whether your plan still works the way you intended. A trust that worked the day you signed it has to keep working for years, and that takes the occasional check-in. (It’s the reason we built our Trust Maintenance Program – to keep plans current as both the law and families evolve.)
We’re here to help
You don’t have to get all of this right on your own; that’s the whole point of working with a team that lives in this work every day. The attorneys at Cookman Law focus specifically on estate planning and special needs planning for California families, and we’ve walked many parents through exactly these decisions.
Whether you’re starting from scratch or you already have a special needs trust and aren’t sure it’s fully connected and up to date, we’d be glad to take a look with you. Schedule a consultation and let’s make sure your plan is set up to work when it matters most.
