Your IRA or 401(k) does not pass through your will or trust. It goes to whoever is listed on the beneficiary form with your plan manager. That form beats everything else. If the wrong person is named, or if the form is outdated, your retirement plan could end up with someone you never meant.
Why Beneficiary Designations Matter More Than Your Will
When you open a 401(k), traditional IRA, or Roth IRA, the plan manager asks you to name a beneficiary (the person who receives the account). That choice controls who gets the funds when you die. It does not matter what your will says. It does not matter what your trust says, unless the trust is named as beneficiary. The beneficiary form wins.
This is why checking your forms often is so key. Life changes like marriage, divorce, the birth of a child, or the death of a spouse can make your current choices outdated. A common mistake is naming an ex-spouse years ago and never fixing the form. The original owner's wishes may be clear. But the plan manager follows the paperwork.
Name Primary and Contingent Beneficiaries
Always name both a primary and a backup beneficiary. The primary is the first person in line to get the account. The backup takes over if the primary has already passed away.
Without a backup, the retirement plan may default to your estate. That means it goes through probate and could lose key tax benefits.
For married couples, note that federal law requires your spouse to be the primary beneficiary of your 401(k). They must sign a written waiver to change this. Traditional IRA and Roth IRA rules are different. They do not require spousal consent.
Understand the SECURE Act 10-Year Rule
The SECURE Act changed how inherited retirement accounts are paid out. Most non-spouse 401(k) beneficiaries must withdraw the full account within 10 years of the original owner's death. Spouses, minor children, disabled persons, and heirs not more than 10 years younger than the deceased have more flexible choices.
This 10-year rule can create a big tax hit for your heirs if they inherit a large account. A Roth IRA or Roth 401(k) avoids this problem. Qualified payouts from a Roth are tax free. Converting some traditional retirement funds to a Roth during your lifetime can lower the tax burden on your heirs.
Should You Name a Trust as Beneficiary?
Naming a trust as the beneficiary of your IRA or 401(k) can make sense in certain cases. This is helpful when an heir is a minor, has special needs, or you want to control how the money is given out over time. But trusts add complexity.
If the trust is not drafted the right way, the IRS may require the full account to be emptied within five years. That can trigger a large tax bill.
Before naming a trust as your retirement plan beneficiary, work with an estate planning team to make sure the trust qualifies as a "see-through" trust under IRS rules. The choice to name a trust as beneficiary depends on your family's specific needs.
Review Your Designations Now
Check your beneficiary forms for every retirement account you own. Contact your plan manager or log into your account to verify the right people are listed. If you have had any major life changes since you last updated the forms, now is the time to fix them. That is the simplest way to make sure your retirement savings go exactly where you want.