Top Business Service Companies in the USA

Between them, the 600 best-ranked of these 909 business service companies cover accounting (116), tax (113), medical (49) and legal (45). They also list work in Texas, York, New York and California. 600 of them have written a profile you can read before you get in touch.

1. =71

   

   Key Resource Group, LLC

   Staffing and recruiting agency in Buffalo, New York placing temporary, contract and direct hire staff across many industries

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   Why #71 (shared): Based in Buffalo, New York · Founded 1983, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

2. =71

   

   IBC, Inc.

   Tax · Legal · Insurance · Also in United States and New York

   IBC, Inc. is an independent financial services firm based in downtown Pittsburgh.

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   Why #71 (shared): Based in Downtown Pittsburgh · Founded 1983, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

3. =75

   

   Gilbert

   Gilbert is a full-service CPA firm offering audit, tax and advisory services to organisations in the Sacramento area.

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   Why #75 (shared): Based in Sacramento area, Northern California · Founded 1984, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

4. =75

   

   Integrated Talent Solutions

   Outsourcing · Engineering · Spring

   Integrated Talent Solutions is a staffing and recruiting agency for engineering, technical and professional roles.

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   Why #75 (shared): Based in corporate offices in Toledo, Columbus and Cleveland, Ohio, and West Michigan · Founded 1984, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

5. =75

   

   Conlon & Company Certified Publics Accountants

   Rochester, New York accounting firm offering tax preparation, bookkeeping and financial planning for individuals and businesses

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   Why #75 (shared): Based in Rochester, New York · Founded 1984, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

6. =75

   

   Add Staff

   ADD STAFF is a staffing agency in Colorado Springs, Colorado. It connects local employers with workers and helps job seekers find temporary and longer-term positions.

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   Why #75 (shared): Based in Colorado Springs, Colorado · Founded 1984, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

7. =75

   

   Jack Levine

   Jack Levine is a Miami CPA firm, now known as Levine CPA, that serves individuals, business owners and international clients across South Florida.

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   Why #75 (shared): Based in Miami, Florida · Founded 1984, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

8. =80

   

   CW Business center

   Personnel · Internet · Also in Los Angeles and California

   CW Business center is a business center in Los Angeles, California, that rents private office space by the hour or by the day.

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   Why #80 (shared): Based in Los Angeles, California · Founded 1985, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

9. =80

   

   Gallman Personnel Services

   Gallman Personnel Services, trading as GPS Jobs, is a staffing and recruitment agency based in Columbia, South Carolina.

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   Why #80 (shared): Based in Columbia, South Carolina · Founded 1985, as stated on its own website, read 9 Oct 2026

   Not yet on record: client reviews, vetting.

10. =80

    

    goDEPO

    Legal · Reporting · Security · Also in Alexandria and New Orleans

    goDEPO is a court reporting, videography and litigation support provider serving law firms throughout Louisiana.

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    Why #80 (shared): Based in Lafayette, Louisiana · Founded 1985, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

11. =83

    

    Hma CPA

    Accounting · .NET · Education

    Hma CPA is an accounting firm in Spokane, WA that offers tax, accounting, bookkeeping and consulting services.

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    Why #83 (shared): Based in Spokane, WA · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

12. =83

    

    DSA Factors

    .NET · Backup · Purchasing · Also in Ware and Mississippi

    Family-owned accounts receivable factoring company that funds businesses against invoices, serving retailers and furniture firms

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    Why #83 (shared): Office in United States of America · Founded 1986 · Family-owned, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

13. =83

    

    Business Factors & Finance

    Medical · .NET · Engineering · Also in Illinois and Georgia

    Business Factors & Finance buys unpaid invoices from businesses so they receive cash quickly instead of waiting for customers to pay.

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    Why #83 (shared): Address in United States of America · In business 40+ years, as stated on its own website, read 5 Oct 2026

    Not yet on record: client reviews, vetting.

14. =83

    

    Cornwell Jackson

    Cornwell Jackson is a CPA and advisory firm serving the middle market in Texas and surrounding areas.

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    Why #83 (shared): Based in Texas · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

15. =83

    

    Essential Data Corporation

    Goals · SEO · Corporation · Also in Connecticut

    Essential Data Corporation, also called EDC, provides technical writing and documentation services across the nationwide US market.

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    Why #83 (shared): Address in United States of America · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

16. =83

    

    Culver CPA Group

    Accounting · Tax · Booking · Also in Michigan

    Culver CPA Group is a firm of CPAs and business advisors in Grand Rapids.

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    Why #83 (shared): Based in Grand Rapids and Wyoming · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

17. =83

    

    API

    API, trading as A Professional Image, Inc, is a US call centre offering live telephone answering. Real operators take calls for client businesses at any hour and pass messages on.

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    Why #83 (shared): Based in United States · Founded 1986, as stated on its own website, read 5 Oct 2026

    Not yet on record: client reviews, vetting.

18. =83

    

    HR Butler

    HR Butler is a payroll, benefits and HR consulting firm based in Columbus, Ohio.

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    Why #83 (shared): Based in Columbus, Ohio · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

19. =83

    

    Humanix

    Humanix is a staffing agency in Spokane, Washington, and Coeur d'Alene, Idaho, that recruits workers for local employers and places job seekers in open roles.

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    Why #83 (shared): Based in Spokane, Washington, and Coeur d'Alene, Idaho · Founded 1986, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

20. =83

    

    Brilliant Events

    Creative · Also in Austin

    Corporate event planning company serving Dallas–Fort Worth and Texas with catering, entertainment, venues and company parties

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    Why #83 (shared): Based in Dallas–Fort Worth, Texas · In business 40+ years, as stated on its own website, read 5 Oct 2026

    Not yet on record: client reviews, vetting.

21. =83

    

    Davidson Associates

    Davidson Associates is a tax and accounting firm in Maine, with offices in Portland and Rockland. It works with businesses, individuals, estates and trusts.

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    Why #83 (shared): Based in Portland and Rockland, Maine · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

22. =83

    

    Bruce P. Frederick

    Accounting · Tax · Goals

    Bruce P. Frederick, CPA, P.C. is a tax and accounting practice located in Portland, Oregon, and it has been serving clients since 1986.

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    Why #83 (shared): Based in Portland, Oregon, USA · Founded 1986 · Owner-managed, as stated on its own website, read 5 Oct 2026

    Not yet on record: client reviews, vetting.

23. =83

    

    FAI Finacial Assistance

    Security

    FAI Finacial Assistance is a debt resolution company that works to settle unpaid balances for consumers and for its clients.

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    Why #83 (shared): Based in Bellevue, WA · Founded 1986, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

24. =83

    

    Grennan Fender

    Accounting · Tax · Legal

    Grennan Fender, LLP is a CPA firm in Orlando. It has operated for more than 40 years, offering tax, audit, consulting and accounting services to individuals and businesses.

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    Why #83 (shared): Based in Orlando · In business 40+ years, as stated on its own website, read 9 Oct 2026

    Not yet on record: client reviews, vetting.

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