IRA-Based Plans

Largest IRA-Based plans by total assets. Source: DOL Form 5500, 2024 plan year.

What the Data Shows About IRA-Based Plans

An IRA-based employer plan (such as SEP-IRA or SIMPLE IRA) allows employers to make contributions to individual retirement accounts established for employees. This page ranks the 50 largest IRA-Based plans in the dataset by end-of-year total assets. Together the plans listed here hold $41.3B in aggregate assets and cover 339,560 participants, a mix of active employees, separated workers with remaining balances, and retirees receiving benefits.

The largest plan in this category, Mayo 403(b) Plan (Mayo Clinic, MN), reports $12.8B in assets with 85,933 participants. Within IRA-Based plans, size reflects a combination of workforce scale, employer contribution rates, employee deferral rates, and long-term investment performance, not a quality rating. Larger plans often benefit from lower per-participant fees, broader investment menus, and more sophisticated administration, but participant outcomes depend on contribution behavior and investment selection. Ranking tables below link to each plan's detail page for EIN, filing status, effective date, and net income.

All figures come from Form 5500 annual returns for the 2024 plan year, filed with the DOL's EBSA and released through EFAST2. Totals reflect a single year-end snapshot and fluctuate with markets and plan activity. This page is informational only, it summarizes public regulatory filings for research and educational purposes, and is not retirement, tax, legal, or financial advice. Before relying on any figure to evaluate an employer's IRA-Based plan or make retirement decisions, verify the underlying filing directly on EFAST2 and consult a qualified professional.

# Plan Name Sponsor State Participants Total Assets
1 Mayo 403(b) Plan Mayo Clinic MN 85,933 $12.8B
2 The Tax Sheltered Annuity Plan of the Methodist Hospital The Methodist Hospital TX 32,299 $3.0B
3 Beaumont Health 403(b) Retirement Savings Plan William Beaumont Hospital MI 34,160 $3.0B
4 The Children's Hospital of Philadelphia Retirement Savings Plan The Children's Hospital of Philadelphia PA 19,571 $2.5B
5 University Hospitals Health System 403(b) Matched Retirement Savings Plan University Hospitals Health System OH 27,009 $2.5B
6 The Tax Sheltered Annuity Plan of Texas Children's Hospital Texas Children's TX 16,971 $2.1B
7 The Garland Industries, Inc. Employee Stock Ownership Plan & Trust Garland Industries, Inc OH 1,118 $2.0B
8 Nvr, Inc. Employee Stock Ownership Plan Nvr, Inc. VA 6,515 $1.3B
9 Bronson Healthcare Group, Inc. 403(b) Tax Sheltered Matching Plan Bronson Healthcare Group, Inc. MI 8,795 $1.2B
10 Baptist Health Thrift Plan Baptist Healthcare System, Inc. KY N/A $1.2B
11 St. Lukes Health System Matched 403b Plan St. Luke's Health System, Ltd. ID 17,370 $1.1B
12 Brandeis University Defined Contribution Plan for Faculty, Professional, and Administrative Employees Brandeis University MA 2,371 $855M
13 Donaldson Company, Inc. Retirement Savings and Employee Stock Ownership Plan Donaldson Company, Inc. MN 4,227 $827M
14 St. Charles Health System, Inc. Retirement Plan St. Charles Health System, Inc. OR 4,769 $744M
15 Albert Einstein Healthcare Network Retirement Savings Plan Albert Einstein Healthcare Network PA 7,438 $737M
16 Scripps Health 403(b) Plan Scripps Health CA 17,599 $729M
17 Firsthealth of the Carolinas, Inc. Matching Savings Plan Firsthealth of the Carolinas, Inc. NC 5,933 $451M
18 Widener University Defined Contribution Retirement Plan Widener University PA 857 $425M
19 The Children's Hospital of Philadelphia Funded Retirement Savings Plan The Children's Hospital of Philadelphia PA 18,405 $390M
20 Monument Health, Inc. 403(b) Plan Monument Health, Inc. SD 5,261 $365M
21 Rutland Regional Health Services Retirement Savings Plan Rutland Regional Medical Center VT 1,695 $289M
22 The Scripps Research Institute Tax Sheltered Annuity Plan The Scripps Research Institute CA 1,355 $273M
23 Bracewell LLP 401(k) Plan a Bracewell LLP TX 535 $258M
24 Natural Resources Defense Council Tax Deferred Annuity Retirement Plan Natural Resources Defense Council, Inc. NY 677 $226M
25 Sturdy Memorial 403(b) Plan Sturdy Memorial Hospital, Inc. MA 2,064 $218M
26 Tax Deferred Annuity Retirement Plan Wnet and Subsidiaries NY 460 $167M
27 Fhn Matching Tax Deferred Annuity Plan Freeport Health Network IL 1,038 $158M
28 Foundation Physicians Medical Group, Inc. 401(k) Plan Foundation Physicians Medical Group, Inc. CA 374 $117M
29 The Queen's Health Systems Retirement Plus Plan The Queen's Health Systems HI 541 $113M
30 The William and Flora Hewlett Foundation 403(b) Plan The William and Flora Hewlett Foundation CA 133 $111M
31 Iit Research Institute Employees' Tax Sheltered Annuity Plan Iit Research Institute IL 118 $108M
32 Los Angeles Philharmonic Association Voluntary 403b Plan Los Angeles Philharmonic Association CA 1,704 $92M
33 Lincoln University Defined Contribution Retirement Plan Lincoln University of the Commonwealth System of Higher Edu PA 602 $91M
34 United States Olympic and Paralympic Committee 403(b) Retirement Investment Plan United States Olympic and Paralympic Committee CO 534 $86M
35 Columbus Community Hospital, Inc. Tax Sheltered Annuity Plan Columbus Community Hospital, Inc. NE 924 $79M
36 Ncaa 403(b) Savings Plan NCAA IN 578 $79M
37 Astm Tax Sheltered Savings Plan American Society for Testing and Materials PA 297 $73M
38 Atlantic General Hospital Corporation Tax Deferred Atlantic General Hospital Corp MD 888 $72M
39 Buckner Int'l 403b Retirement Savings Plan Buckner International TX 1,125 $61M
40 Compass Health Retirement Plan Compass Health WA 637 $52M
41 Brandeis University Defined Contribution Retirement Plan for Nonexempt Employees Brandeis University MA 796 $52M
42 The Thesholds and Affiliates Tax Sheltered Annuity and Savings Plan The Thresholds IL 1,261 $46M
43 Wildwood Programs, Inc. Tax Deferred Annuity Program Wildwood Programs NY 1,140 $45M
44 Hospice & Palliative Care Charlotte Region Savings and Incentive Partnership Plan Hospice & Palliative Care Charlotte Region NC 829 $45M
45 The Children's Hospital of Philadelphia Retirement Savings Plan for Union-Represented Employees The Children's Hospital of Philadelphia PA 1,502 $36M
46 Lifegift Organ Donation Center Tax Sheltered Annuity Plan Lifegift Organ Donation Center TX 422 $31M
47 Muscular Dystrophy Association, Inc. Savings Plan Muscular Dystrophy Association, Inc. IL 221 $23M
48 Aceee 403(b)Plan American Council for an Energy Efficient Economy DC 86 $20M
49 Unbound Retirement Plan UNBOUND KS 112 $19M
50 The Foundation for Senior Living 403(b) Matching Retirement Plan The Foundation for Senior Living AZ 311 $11M

Nearby Plan Types

Other employer-sponsored retirement plan categories filed on Form 5500.

Compare IRA-Based side-by-side with 3 other plan types →

Frequently Asked Questions

What is a IRA-Based plan? ▼
An IRA-based employer plan (such as SEP-IRA or SIMPLE IRA) allows employers to make contributions to individual retirement accounts established for employees.
What are the largest IRA-Based plans in the U.S.? ▼
The largest IRA-Based plan is Mayo 403(b) Plan with $12.8B in total assets. This page lists the top 50 IRA-Based plans ranked by total assets.
How many IRA-Based plans are there in the U.S.? ▼
The DOL Form 5500 dataset includes thousands of IRA-Based plans. This page shows the 50 largest by total assets. The full dataset covers all employer-sponsored retirement plans filed with the Department of Labor.
Where does IRA-Based plan data come from? ▼
All data on this page comes from DOL Form 5500 annual filings, which employers must submit to the U.S. Department of Labor for retirement plans with 100+ participants. Data reflects the 2024 plan year.

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Understanding Form 5500

Source: U.S. Department of Labor, EBSA Form 5500 public disclosure dataset. Plan year 2024. This page aggregates plans where the filer coded the plan as IRA-Based.

Source: DOL EFAST2 filing system (efast.dol.gov) - plan type classification reflects the code selected by the plan administrator at filing time.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.