Beneficiary.

In plain English

A beneficiary is the person, trust, charity, or estate named on a financial account or insurance policy to receive the assets when the account owner dies. Beneficiary designations apply to retirement accounts (401(k), IRA, Roth IRA), life insurance, annuities, and many bank and brokerage accounts (via 'transfer on death' or 'payable on death' designations). The named beneficiary controls who inherits the asset, regardless of what a will says. A beneficiary designation generally overrides a contradictory will.

01Why it matters

Beneficiary designations are some of the most consequential and most-overlooked documents in personal finance. An outdated designation (a former spouse, a deceased parent, a missing name entirely) can route hundreds of thousands of dollars to the wrong recipient, override a current will, and trigger years of family conflict and legal expense. Reviewing beneficiary designations after every major life event (marriage, divorce, birth of a child, death of a previously-named person) is part of basic financial hygiene.

02The math, step by step

A 401(k) holder marries, never updates the beneficiary designation, divorces, remarries, and dies 15 years later. The original beneficiary, the first spouse, may receive the entire account regardless of the second marriage or any will provisions, because the 401(k) designation overrides the will. ERISA (the federal law governing most 401(k)s) has spousal-consent rules that complicate this in some cases, but the basic principle holds across most account types: the designation wins.

03What this is NOT

04Receipts

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