Top Managed IT Companies in Chicago

Eccezion

More than accounting. We build brands too.

✓ Verified Provider ⭐ 4.2/5 Stars Est. 1989
McHenry, IL
50–249 employees
Founded 1989
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Eccezion is a managed IT services provider based in McHenry, IL, operating since 1989. Across 15 verified Google reviews it averages 4.2 out of 5, a public track record you can weigh during diligence. It focuses on Managed IT Services, Cybersecurity, IT Help Desk & End-User Support, Compliance & Risk. Compare it against other Chicago managed IT providers, then request a quote.

Vetted by the Best IT MSP editorial team · Last updated June 2026

About Eccezion

Eccezion is a full-service CPA, business consulting, technology, and marketing firm in McHenry/Barrington, IL, with a dedicated Managed IT Services division alongside its accounting and marketing offerings.

Services Offered

🖥️
Managed IT Services
🔒
Cybersecurity
🛟
IT Help Desk & End-User Support
Compliance & Risk
🔌
VoIP & Business Phone
📊
IT Consulting

Why Choose Eccezion

4.2/5 From 15 Google Reviews

With 15 reviews averaging 4.2, Eccezion has a checkable public track record rather than marketing claims alone.

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Based in McHenry

Eccezion is headquartered in McHenry, IL, so McHenry businesses get a local team for on-site work instead of a distant call center.

Top 500 CPA firm (Inside Public Accounting)

Top 500 CPA firm (Inside Public Accounting)

Best Firms to Work For and Best of the Fox McHenry

Best Firms to Work For and Best of the Fox McHenry County award winner

Location

McHenry, IL

Certifications & Compliance

Top 500 CPA firm (Inside Public Accounting)
Best Firms to Work For and Best of the Fox McHenry County award winner
Integrated CPA, technology, and marketing service lines

Frequently Asked Questions

What do Eccezion reviews say?

Across 15 verified Google reviews, Eccezion averages 4.2 out of 5. Weigh that public track record alongside a direct quote.

Which IT services does Eccezion provide?

Eccezion delivers Managed IT Services, Cybersecurity, IT Help Desk & End-User Support, Compliance & Risk, VoIP & Business Phone, IT Consulting to organizations across Chicago, IL.

What area does Eccezion serve?

Eccezion is based in McHenry, IL and supports businesses across Chicago and the greater metro area.

When did Eccezion start?

Eccezion has been operating since 1989.

Is Eccezion certified?

Eccezion carries Top 500 CPA firm (Inside Public Accounting), Best Firms to Work For and Best of the Fox McHenry County award winner, Integrated CPA, technology, and marketing service lines.