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Your 401(k) has a beneficiary. Do you still need a trust?

Your 401(k) has a beneficiary. Do you still need a trust?

November 05, 2026

A few weeks ago, a prospective client close to retirement asked me a question I hear all the time. "My 401(k) names my wife first and my kids second. Why would I need a will or a trust? Isn't that already taken care of?"

He's partly right. For that account, the beneficiary form usually decides who gets the money, no matter what a will says. But a retirement account is only one piece of what most families own. Before you read further, try filling this in:

The last time I checked my beneficiaries:___________________________________________________________

Who makes decisions for me if I can't:_____________________________________________________________

If either line is blank or makes you pause, this post is for you.

What a Beneficiary Form Does Well

Retirement accounts, life insurance and annuities pass straight to the people you name. They skip probate, and they usually move faster than anything in a will. Many bank and brokerage accounts can work the same way with a "payable on death" or "transfer on death" designation. That's a real strength, and it's why you should keep these forms current. But a beneficiary form only answers one question: who gets this account when I die. It doesn't answer how, when, or what happens to everything else.

Four Gaps a Beneficiary Form Won't Cover

  1. Your house and everything without a beneficiary

A home owned jointly usually passes to the surviving spouse. But when the second spouse dies, a house in your names can go through probate, the court process that can be slow, public and expensive. The same goes for cars, personal property and any account with no beneficiary named. The rules vary from state to state, and that's where a trust or other titling steps come in.

How We Handle It

We list everything a family owns and how each piece is titled, then flag what would go through probate today. If a trust makes sense, we help make sure the house and other assets are actually moved into it, which is the step people most often skip.

        2. How and when the money is used

A beneficiary form hands over the money, usually all at once. That may not be what you want for a young adult, a child who struggles with money, or a grandchild. Minors generally can't inherit directly, so a court may have to step in. A trust lets you set the terms: money for education, payments over time, or a trusted person to manage it.

How We Handle It

We start with what you want the money to do for your family, then work with you on the trust terms and beneficiary setup that get it there. That includes whether a trust should be named on your retirement accounts and what that means for taxes.

      3. Protecting what you leave behind

What happens if your spouse remarries after you're gone, or a child goes through a divorce? Money left outright can end up with someone you never intended. A trust can keep assets in the family line and protect them from creditors or a future spouse.

How We Handle It

We talk through the "what ifs" most families don't want to bring up, so the plan reflects how you want things handled for both generations.

      4. If you're alive but can't make decisions

Beneficiary forms only matter after death. If an illness or accident leaves you unable to manage your affairs, someone needs legal authority to pay bills, manage accounts and talk to doctors. That takes a financial power of attorney and a healthcare directive. Without them, your family may need a court's permission to help you.

A beneficiary form tells the bank who gets the account. An estate plan tells
your family what you wanted.

Is Your Plan as Complete as You Think?

Ask yourself these five questions:

  1. Have I checked every beneficiary form in the last three years, including the backup beneficiaries?
  2. Is anyone still named who shouldn't be, like an ex-spouse or someone who has passed away?
  3. Would my house go through probate if both of us died?
  4. If a child or grandchild inherited tomorrow, would I be comfortable with them getting it all at once?
  5. Does someone have legal authority to act for me if I can't?

At Shoreline, estate planning is part of our all-inclusive service, alongside investment management and tax preparation. We help clients put wills, trusts, powers of attorney and healthcare directives in place, and we review beneficiaries as part of every plan.

At Shoreline, investment management, tax preparation and estate planning all sit under one roof, so these answers fit together in one plan instead of across separate accounts and advisors.

The Five-Minute Version

1. Beneficiary forms work well, but only for the accounts they're attached to.
2. Check every form, including backups, and update it after any major life change.
3. Find out what would go through probate, starting with your house.
4. Use a trust if you want to control how and when your family receives money.
5. Put a power of attorney and a healthcare directive in place now, while you can.

Ready to make sure your estate plan is complete?

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