What to do when a Milliman account holder dies

Contact Milliman — 5-step process, 7 required documents, and milliman publishes no claim-processing service level, and it could not honestly publish one: the timeline is set by the employer's plan, not by the recordkeeper. in practice the two things that stretch a milliman claim are (1) identifying every plan — a survivor who claims the 401(k) and never asks about the paired pension or cash balance plan leaves money unclaimed, and (2) a contested or missing designation, where the plan administrator has to apply the plan's default order before anything can be paid. call the benefits service center at 866-767-1212 for the plan-specific timeline.

Milliman

Subsidiary of Milliman, Inc. (employee-owned)

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Milliman Benefits Service Center

Mailing Address

Corporate headquarters (not a claims or forms address): Milliman, Inc., 1301 Fifth Avenue, Suite 3800, Seattle, WA 98101-2646

Milliman Benefits Service Center

Mailing Address

Corporate headquarters (not a claims or forms address): Milliman, Inc., 1301 Fifth Avenue, Suite 3800, Seattle, WA 98101-2646

Milliman Benefits Service Center (death claims run through the same line; no branches, no separate bereavement line, no public claim form or claims address)

Verified Jul 2026

When an account holder at Milliman passes away, the next step depends on how the retirement accounts were set up. Accounts with beneficiary designations or trust ownership transfer outside of probate. Accounts titled solely in the deceased's name require the estate's legal representative to work with Milliman's Milliman Benefits Service Center (death claims run through the same line; no branches, no separate bereavement line, no public claim form or claims address) (866-767-1212) to access and distribute the funds.

Death claims at Milliman can be started through an online portal, which streamlines the initial notification and document upload. Phone options are also available.

Death claim process

Here is the step-by-step death claim process at Milliman:

Filing a claim

1
Call the Milliman Benefits Service Center at 866-767-1212 (Monday-Friday, 7:00 a.m. to 7:00 p.m. Central) or use the webchat on millimanbenefits.com, and report the death. There is no branch to visit and no online claim submission
2
Identify the EMPLOYER whose plan holds the account, then ask which Milliman-administered plans the participant had — a 401(k) and a pension or cash balance plan are frequently both in play, and each is a separate claim
3
The plan document decides who gets paid, and it outranks the will:
  • The named beneficiary of record is paid, regardless of what the will says
  • Where the participant was married and the plan is ERISA-covered, the spouse is the default beneficiary unless the spouse signed a written consent to someone else
  • Where no valid designation exists, the plan document's own default order applies — commonly spouse, then children, then the estate. Milliman's own published guidance is blunt about this: if you do not name a beneficiary, federal and state laws and the plan's default rules decide who is paid
  • A trust named as beneficiary claims through its trustee, with a Certification of Trust
4
Submit the plan-specific claim form with a certified death certificate and your identification. Milliman does not publish a universal claim form; the Benefits Service Center issues the one your plan uses
5
Choose a distribution option from what the plan actually offers — this is not open-ended:
  • Defined contribution plans typically offer a lump sum, a direct rollover (a spouse can roll to their own IRA; a non-spouse only to an inherited IRA), or installments
  • Defined benefit and cash balance plans may pay a survivor annuity, and only if the elected payment form provides for one
  • Under the SECURE Act, most non-spouse beneficiaries must fully distribute a defined contribution balance within 10 years
  • A nonqualified deferred compensation balance follows the participant's original 409A election, cannot be rolled over, and is taxable income in respect of a decedent when paid

Required Documents

  • Certified copy of the death certificate
  • The plan-specific claim / distribution election form (issued by the Benefits Service Center — no public form exists)
  • Government-issued photo ID for the claiming beneficiary or trustee
  • Marriage certificate, where a spouse claims as the surviving spouse
  • Certification of Trust or the trust document, where a trust is the beneficiary
  • Letters Testamentary or Letters of Administration, where the estate is the beneficiary
  • Tax withholding election forms for the distribution

What to know at this institution

The single most important fact about a Milliman death claim is that Milliman is the RECORDKEEPER, not the plan. It has no branches, no walk-in offices, and no deposits or policies of its own — everything runs through the Benefits Service Center at 866-767-1212 (phone or webchat, Monday-Friday 7:00 a.m. to 7:00 p.m. Central) and the millimanbenefits.com portal. The employer's plan document is what determines who inherits, in what order, and on what timeline; Milliman administers that document. Three consequences an executor should plan around. First, there is no universal Milliman claim form, no public claim form PDF, and no general Milliman claims address: the form and the return address are issued by the Service Center per plan, so a package mailed to Milliman's Seattle headquarters is going to the wrong place. Second, ask which plans the participant had rather than naming the one you know about — Milliman is frequently the recordkeeper for a 401(k) AND a pension or cash balance plan at the same employer, each with its own beneficiary designation and its own claim, and Milliman built its portal's Beneficiary designation tile to show all Milliman plans at once for exactly this reason. Third, on a pension the beneficiary designation may be beside the point: what survives the retiree is determined by the payment form they elected, and a single life annuity pays nothing to anyone after death. Where no beneficiary was ever named, Milliman's own published guidance states that federal and state laws and the plan's default rules decide who receives the payment — which usually means the spouse, then children, then the estate, and the estate route drags a plan balance into probate that a designation would have kept out of it.

Download instructions for the whole estate

Expected timelines at Milliman: Milliman publishes no claim-processing service level, and it could not honestly publish one: the timeline is set by the employer's plan, not by the recordkeeper. In practice the two things that stretch a Milliman claim are (1) identifying every plan — a survivor who claims the 401(k) and never asks about the paired pension or cash balance plan leaves money unclaimed, and (2) a contested or missing designation, where the plan administrator has to apply the plan's default order before anything can be paid. Call the Benefits Service Center at 866-767-1212 for the plan-specific timeline. Delays are almost always caused by incomplete paperwork—gathering all required documents before filing the initial claim helps avoid back-and-forth.

Milliman requires several documents to process a claim, including Certified copy of the death certificate, The plan-specific claim / distribution election form (issued by the Benefits Service Center — no public form exists), and Government-issued photo ID for the claiming beneficiary or trustee, and additional documentation depending on the account type. Certified copies are typically needed—photocopies are generally not accepted for death certificates or court documents.


Frequently asked questions

The employer's plan document does, and Milliman administers it. Milliman is a recordkeeper: it was hired by the account holder's employer to run the plan's books, it holds no deposits, issues no policies, and has no branches to visit. That distinction has real consequences for a beneficiary. The rules on who is paid, in what order, and in what form come from the plan document written by the plan sponsor — not from any contract between the participant and Milliman — so the answers vary from employer to employer even though the phone number is the same. It also means there is no universal Milliman claim form and no general Milliman claims address: the Benefits Service Center at 866-767-1212 issues the form for your specific plan and tells you where to send it. Everything happens by phone, webchat, or the millimanbenefits.com portal (Monday-Friday, 7:00 a.m. to 7:00 p.m. Central). Milliman's Seattle headquarters is a consulting office; a claim package mailed there does not reach a plan.

Frequently, yes, and it is the most common way money is left behind in a Milliman-recordkept estate. Milliman's core business is administering defined benefit and cash balance plans alongside defined contribution plans for the same employer — its Total Retirement Outsourcing offering exists precisely to run them on one platform — so an employee with a 401(k) at Milliman may also have a frozen pension or a cash balance account there. Each is a separate plan with its own beneficiary designation and its own claim; claiming the 401(k) does not surface the other one. Milliman itself built the Beneficiary designation tile on millimanbenefits.com to display beneficiary status for ALL Milliman-administered plans in one place because participants miss the second plan. For a survivor, the question to ask the Benefits Service Center at 866-767-1212 is not "how do I claim the 401(k)" but "which Milliman-administered plans did this person have at this employer."

Not whoever the will names. Milliman's own published guidance states it plainly: if you do not name a beneficiary and you die, federal and state laws and the plan's default rules determine who receives the payment from your retirement account — and it notes that a proper beneficiary designation is what keeps the account out of probate court, making payment simpler, faster, and cheaper for heirs. In practice the plan document contains a default order, most commonly the surviving spouse first, then children, then the participant's estate. If the default lands on the estate, the balance is dragged into probate, taxed on a compressed schedule, and exposed to estate creditors — everything a designation would have avoided. For a married participant in an ERISA-covered plan, the spouse is the default beneficiary by federal law regardless, and a designation naming someone else is not effective without the spouse's written consent. A survivor should ask the Benefits Service Center at 866-767-1212 for the plan's default order rather than assume it.

It depends on the payment form the retiree elected at retirement, not on who is named as beneficiary — and this catches families out. A defined benefit or cash balance pension administered by Milliman pays in whatever form the retiree chose: a single life annuity pays the largest monthly check but stops dead at the retiree's death and leaves nothing for anyone, while a joint-and-survivor election continues a percentage to the surviving spouse for life, and a period-certain election continues payments for the remainder of a fixed term. Federal law protects a married participant here — an ERISA-covered pension must generally pay a qualified joint and survivor annuity unless the spouse signed a written consent to a different form — but a consent signed years earlier is binding. So the first question for a survivor is which form of payment was elected, and the second is whether the spouse consented to it. Call the Benefits Service Center at 866-767-1212 with the employer name and ask for the payment form on file.

Milliman's Milliman Benefits Service Center (death claims run through the same line; no branches, no separate bereavement line, no public claim form or claims address) can be reached by phone at 1-866-767-1212 for questions throughout the claims process.

If the deceased held multiple Milliman retirement accounts, each may require a separate claim or have different documentation requirements. The Milliman Benefits Service Center (death claims run through the same line; no branches, no separate bereavement line, no public claim form or claims address) can confirm which accounts require individual attention and which can be processed together.

SimplyTrustSimplyTrust Editorial·

Sources

Data sourced from Milliman primary sources (14 pages reviewed). How we research.

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