Your retirement accounts do not follow your will. They follow a form most people filled out years ago and forgot. Here is how the money actually moves, what the plan administrator will ask for, and the ten-minute check that protects your family.
For most working Americans, retirement accounts are the largest financial asset they will ever hold outside the house. By the time someone is in their forties or fifties, a 401(k) or IRA can rival the equity in a home. And yet retirement accounts are among the most commonly misunderstood parts of an estate.
Families often assume the money follows the will, the way a bank account or a car might. Or that the surviving spouse automatically receives everything. Neither is reliably true. Retirement accounts follow their own path after a death, and getting it wrong, or not knowing the steps, can cost a family months of delay and a meaningful amount in taxes, at exactly the time they least need another problem.
This is the single most important thing to understand. A 401(k) or IRA is a beneficiary-designated asset. When the account holder dies, the money goes directly to whoever is named on the beneficiary designation form held by the plan administrator or custodian. It does not pass through the will, and in most cases it does not go through probate at all.
That is genuinely good news. Probate is the court-supervised process of settling an estate, run through the probate court in the deceased's state or county, and it can take months. Assets that pass by beneficiary designation skip that line entirely. A named beneficiary can often receive retirement funds in weeks rather than months.
The flip side: because the beneficiary form controls the money, the will cannot fix an outdated one. If the form names the wrong person, the wrong person gets paid.
Courts have upheld this again and again. An ex-spouse named on a 401(k) beneficiary form twenty years ago can receive the entire balance, even if the will says otherwise, even if the divorce settlement says otherwise, and even if everyone in the family knows it is not what the person wanted. The form is the instruction.
For workplace plans like a 401(k), federal law adds one protection: a surviving spouse is generally entitled to the account unless they signed a written waiver. That rule does not apply to IRAs in most states, which makes the IRA beneficiary form even more important to keep current.
The life events that most often make a beneficiary form wrong are the obvious ones: marriage, divorce, remarriage, the birth of a child, the death of a previously named beneficiary. Each of those is a reason to check the form. Most people never do. The form they filled out during onboarding at a job in their twenties quietly becomes one of the most consequential documents they have ever signed.
If no beneficiary is named, or every named beneficiary has already died, the account usually defaults to the estate. That is the worst of both worlds. The money now has to go through probate, with the delay that brings, and it often loses access to the more favorable distribution options a named individual beneficiary would have had.
Each plan has its own default rules for this situation, set out in the plan documents. Some pay a surviving spouse first, then children, then the estate. Others go straight to the estate. The family does not get to choose. Whatever the document says is what happens.
Ten minutes spent confirming a beneficiary is named, and current, is one of the highest-value pieces of estate planning an ordinary person can do.
When the account holder dies, someone has to tell the plan administrator (for a workplace plan) or the custodian (for an IRA, usually a brokerage or fund company). They will not find out on their own. The processes vary by company, but the documents they ask for are largely the same.
A certified copy of the death certificate. These are issued by the vital records office in the state where the death occurred. Funeral homes usually help order them. Order more copies than you think you need; ten is a common recommendation, because many institutions want their own certified copy.
A completed claim form. Each administrator has its own. The beneficiary fills it out, chooses how they want to receive the money, and provides identification and bank or account details.
Identification for the beneficiary. Standard identity checks apply, including the beneficiary's Social Security number for tax reporting.
If the account has defaulted to the estate, the executor or administrator will also need proof of their authority: the letters issued by the probate court when the estate was opened. That is where the timeline stretches, because those letters can take weeks or months to obtain.
The options differ depending on who inherits, and the differences matter for taxes. This is general information, not tax advice; an hour with a tax professional is usually money well spent for anyone inheriting a retirement account.
A surviving spouse has the most flexibility. They can usually roll the account into their own IRA and treat it as their own, or keep it as an inherited account. Rolling it over lets the money keep growing tax-deferred on the spouse's own timeline.
Most non-spouse beneficiaries, such as adult children, move the money into an inherited IRA and must generally empty the account within ten years of the death. Withdrawals from traditional accounts are taxed as income, so the timing of those withdrawals can change the tax bill significantly.
An estate as beneficiary generally has the least flexibility and the fastest forced payout. This is one more reason to keep a real person named on the form.
Roth accounts pass tax-free in most cases, which is part of why they are popular in estate planning. The ten-year clock still applies to most non-spouse beneficiaries, but the withdrawals themselves are not taxed.
For a named beneficiary with the paperwork in order, two to six weeks from claim to payment is a reasonable expectation. Some custodians are faster. The wait is almost never on the administrator's side once they have the death certificate, the completed claim form, and verified identification.
For an account that defaults to the estate, add the probate timeline on top: commonly several months, longer if the estate is contested or the will cannot be found.
The single biggest variable is whether the family knows the account exists and who holds it.
The most common reasons retirement money takes longer than it needs to are practical, not legal.
Nobody knows the accounts exist. The average American changes jobs many times across a career, and 401(k) accounts left behind at old employers are easy to lose track of. Billions of dollars sit in forgotten retirement accounts. If you have old accounts scattered across former employers, your family may never find them.
Nobody knows who the custodian is. Plans change record keepers. Companies merge. The statement from five years ago may name a company that no longer services the account. A current, written list of providers saves weeks of detective work.
The beneficiary form is out of date. An ex-spouse, a deceased parent, or simply a blank. Outdated forms cause disputes, and disputes freeze the money until they are resolved.
The estate is contested. Will challenges and family disputes can pause everything that flows through probate. Beneficiary-designated accounts are usually insulated from this, which is one more argument for keeping the forms current.
Most of these are not fixable after the fact. They are fixable now, by writing things down. The family that knows which custodians hold the accounts, who the beneficiaries are, and where the statements live is the family that gets through the administrative side of grief faster.
When the money eventually arrives, it is, in the end, money. It will pay for what it pays for. What families often wish they had, alongside the balance, is some sense of what the person they lost would have wanted that money to do.
A 401(k) or IRA, for most people, is decades of paycheck deductions made quietly in the background. It represents working life. It represents intention. And it tends to arrive at families during a period when nobody has the energy to think about anything beyond the next week.
One of the most powerful things you can do is leave your family a letter explaining what you wanted this money to do. Aftr's Bookshelf lets you write that letter now, sealed and delivered when they need it.
A few paragraphs is enough. Whether you hoped it would help with a mortgage, fund a grandchild's education, take everyone on a trip together, or simply give your partner room to breathe. It is not a will, and it is not legal advice. It is the part that the legal documents cannot carry: your voice, at the moment your family needs to hear it.
Retirement accounts are one of the more administrative pieces of an American estate. The steps are clear once you know them. The kindest thing you can do is make sure your family does not have to learn them in a hurry.
Aftr's Bookshelf lets you write letters to the people you love, sealed and delivered when they need them. A retirement balance arrives as a number. A letter arrives as you.
Start your plan - 30 days free