Beneficiary Designations Trump Your Will

This is the most misunderstood concept in estate planning. If your 401(k) beneficiary is your ex-spouse from a 2010 divorce, and your will says "everything to my current spouse," the 401(k) goes to the ex-spouse. The will doesn't control accounts with beneficiary designations.

Accounts that pass by beneficiary designation (not through your will):

  • 401(k) and other retirement accounts (IRA, 403b, etc.)
  • Life insurance policies
  • Bank accounts with a TOD (Transfer on Death) designation
  • Brokerage accounts with a TOD designation
  • Annuities

Review Beneficiaries After Every Life Change

Beneficiary designations are only as good as the last time you updated them. The critical moments to review:

  • Marriage (new spouse may not be on file)
  • Divorce (ex-spouse may still be listed)
  • Birth or adoption of a child
  • Death of a listed beneficiary
  • Significant change in a relationship
  • Starting a new job with new employer accounts
Check your KC 401(k) designations today. Log into the KC benefits portal and navigate to beneficiary designations. Confirm names, dates of birth, and relationships are correct. It takes five minutes and can save your family years of legal complications.

Primary vs. Contingent Beneficiaries

  • Primary beneficiary: First in line to receive the assets
  • Contingent beneficiary: Receives assets if the primary beneficiary dies before you (or declines the inheritance)

Always name a contingent beneficiary. If you only name a primary and they predecease you, your accounts may pass through your estate (probate) — which is slower, more expensive, and public.

Naming Minor Children

A minor child cannot legally inherit significant assets directly. If you name a child under 18 as a beneficiary, a court may need to appoint a guardian to manage the funds — a slow, expensive process. Better approach: name your estate and use your will to establish a trust for the minor children, or name the trust directly as beneficiary and set it up with an attorney.

Your Will: What It Does and Doesn't Cover

A will governs assets that don't have beneficiary designations — personal property, real estate without a co-owner or TOD designation, bank accounts without TOD. Key elements every will should address:

  • Who receives your property
  • Who serves as guardian for minor children
  • Who serves as executor (personal representative) of the estate
  • Any specific bequests (particular items to particular people)

A will without named beneficiaries on financial accounts is an incomplete estate plan. Both matter.

This article is for general educational purposes only. Estate planning laws vary by state. Consult an attorney for guidance specific to your situation and state of residence.
Life Insurance Basics → KC 401(k) Deep Dive → Open Enrollment Checklist — update beneficiaries →