About Miller, Cooper & Co., Ltd.
<p>Founded in 1919, Miller, Cooper & Co., Ltd. is a long-running accounting and consulting firm with 466 employees.</p> <p>Based in Deerfield in Chicago’s North Shore suburbs, the firm works with entrepreneurial and middle-market organizations across the greater Chicago metro area. Its retirement plan work includes audit and assurance services, with support from teams that also handle accounting and tax matters.</p> <p>Miller Cooper’s broader service mix includes accounting, tax, audit and assurance, due diligence, IT solutions, and business consulting. The firm has been named a “Best of the Best CPA Firm” by INSIDE Public Accounting and has appeared on Accounting Today’s Top 100 Firms list.</p> <p>What sets the firm apart is its combination of a long operating history and a deep bench that covers audit, due diligence, and IT services under one roof.</p> <ul> <li>Retirement plan audit support from <a href="/auditors/401k">401(k) auditors</a></li> <li>Audit and assurance services</li> <li>Tax and accounting services</li> <li>Due diligence for transactions</li> <li>IT solutions and business consulting</li> </ul>
Website: https://millercooper.com/contact/
Founded: 1919
Employees: 466
Office Locations
- Deerfield, IL
Accreditations & Certifications
- AICPA EBPAQC
- AICPA Member
Audit Statistics (2024)
- Total Plans Audited: 160
- Total AUM Audited: $7.6B
- 401(k): 160 plans, $7.6B AUM
Plans Serviced (2025)
Largest plans where this firm is listed as a service provider (Schedule C) or IQPA (Schedule H) on the most recent filings (From Form 5500).
| Plan | Sponsor | Assets | Participants |
|---|---|---|---|
| HURON CONSULTING GROUP RETIREMENT SAVINGS PLAN | HURON CONSULTING GROUP INC., IL | $1.1B | 4,591 |
| HOLLISTER 401(K) RETIREMENT SAVINGS PLAN | HOLLISTER INCORPORATED, IL | $554M | 1,240 |
| BOISE PAPER HOLDINGS, L.L.C. CONSOLIDATED PENSION PLAN | PACKAGING CORPORATION OF AMERICA, IL | $497M | 949 |
| PACKAGING CORPORATION OF AMERICA HOURLY PENSION PLAN | PACKAGING CORPORATION OF AMERICA, IL | $352M | 2,774 |
| FOLLETT RETIREMENT SAVINGS PLAN | FOLLETT HIGHER EDUCATION GROUP, LLC, IL | $335M | 4,627 |
| 401(k) Retirement Plan | Healthcare Sponsor, IL | $285M | 292 |
| 401(k) Retirement Plan | Manufacturing Sponsor, IL | $282M | 1,004 |
| 401(k) Retirement Plan | Professional Services Sponsor, IL | $263M | 1,393 |
| 401(k) Retirement Plan | Technology Sponsor, IL | $253M | 1,252 |
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