How to name beneficiaries and fund a trust at MissionSquare
Covers 10 retirement accounts — beneficiaries can be managed online
Participant Services
Phone1-800-669-7400
Mailing Address
MissionSquare Retirement, 777 North Capitol Street NE, Suite 600, Washington, DC 20002
Telecommunications Relay Service (TRS)
WebsiteLearn more→
Participant Services
Phone1-800-669-7400
Mailing Address
MissionSquare Retirement, 777 North Capitol Street NE, Suite 600, Washington, DC 20002
Telecommunications Relay Service (TRS)
WebsiteLearn more→
Participant Services - Death Claims
Phone1-800-669-7400
Toll-Free1-800-669-7400
Fax1-844-677-3297
Mailing Address
MissionSquare Plan Services, P.O. Box 219320, Kansas City, MO 64121-9320
WebsiteNotify online→
Verified May 2026
Who inherits your MissionSquare retirement retirement accounts is determined by the beneficiary designation on file—not by your will. This makes keeping designations current one of the most important estate planning steps, especially because the choice of beneficiary also affects how inherited distributions are taxed.
MissionSquare has 10 product types, and the estate transfer rules differ across them. Some support beneficiary designations on tax-advantaged accounts, some can be retitled into a trust, and others will require probate if nothing is set up. Each is covered below.
457(b) Deferred Compensation Plan403(b) Defined Contribution Plan401(k) Retirement Savings Plan401(a) Defined Contribution PlanDefined Benefit Plan401(h) Retiree Health AccountRetirement Health Savings (RHS) ProgramMissionSquare Traditional IRAMissionSquare Roth IRAMissionSquare SEP IRA
1
Log in to your MissionSquare account at accountaccess.missionsq.org
2
Select "My Account" then "My Profile" and "Beneficiaries"
3
Enter details for each beneficiary:
- Relationship to account holder
- Social Security number and date of birth
- Percentage allocation (must total 100%)
4
Select "Submit" and confirm on the confirmation screen
Required Documents
- Trust name, date established, and tax ID (EIN or SSN)
Special Requirements
- Trusts can be named as beneficiaries on all retirement accounts
- For 403(b) plans, married participants must designate spouse for at least 50% of vested balance unless spouse signs a waiver
- For 401(k) plans, married participants must designate spouse for 100% of account unless spouse formally waives this right
- Review designations after any life change such as marriage, death, divorce, or birth of a child
- A trust not meeting IRS look-through requirements receives a lump-sum distribution as a non-person beneficiary
Participant Services
Phone1-800-669-7400
Mailing Address
MissionSquare Retirement, 777 North Capitol Street NE, Suite 600, Washington, DC 20002
Telecommunications Relay Service (TRS)
WebsiteLearn more→
Participant Services
Phone1-800-669-7400
Mailing Address
MissionSquare Retirement, 777 North Capitol Street NE, Suite 600, Washington, DC 20002
Telecommunications Relay Service (TRS)
WebsiteLearn more→
Participant Services - Death Claims
Phone1-800-669-7400
Toll-Free1-800-669-7400
Fax1-844-677-3297
Mailing Address
MissionSquare Plan Services, P.O. Box 219320, Kansas City, MO 64121-9320
WebsiteNotify online→
Verified May 2026
Estate planning articles
Learn how to protect your MissionSquare accounts and other assets with trusts, beneficiary designations, and estate planning documents.
