Top 100 Business Consulting Companies in Illinois
The Best of February 2026Looking for a top consulting firm in Illinois?
Consulting firms provide in-depth knowledge and understanding in relation to the client’s industry, technology, and processes. Having this kind of business partner empowers companies to make the best decisions for the business. They provide technical and corporate assistance, helping you resolve your challenges regardless of the industry you’re in.
Consulting firms provide a wide range of services, from creating business strategies to solidifying operational processes. Take your company to the next level by partnering with a firm today. Their knowledge and expertise are valuable assets for every business.
To assist you in your search for a partner, we’ve compiled this list of the top consulting companies in Illinois. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Illinois Business Consulting Firms
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601Undisclosed50 - 249 employeesChicago, ILAvionos is a Marketing Strategy company. Located in Chicago, Illinois, the team specializes in Marketing Strategy and Digital Strategy.Read More
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602Undisclosed50 - 249 employeesChicago, ILEstablished in 2005, The Claro Group is a Commercial Financing company. The team focuses on Commercial Financing and Accounting.Read More
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603$25,000+50 - 249 employeesChicago, ILUniqcli, a Marketing Strategy company, was launched in 2017. They are headquartered in Chicago, Illinois; Los Angeles, California; Philadelphia, Pennsylvania and Raleigh, North Carolina and have a midsize team. Uniqcli focuses on Marketing Strategy, cloud consulting & SI, Low/No Code Development, IT strategy consulting, and more.Read More
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604Undisclosed50 - 249 employeesJerseyville, ILVerve Industrial, a data analytics company, was established in 1994. The company specializes in BI & big data consulting & SI and Cybersecurity, and is midsize.Read More
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605Undisclosed50 - 249 employeesChicago, ILSyntellis Performance Solutions is a Financial Consulting company. They are in Chicago, Illinois, and their services include Financial Consulting and Market Research.Read More
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606Undisclosed50 - 249 employeesPark Ridge, ILSales Outsourcing company Policy Claim Management International (PCMI) is located in Park Ridge, Illinois. They provide Sales Outsourcing and Market Research.Read More
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607$25,000+10 - 49 employeesChicago, ILMangrum Career Solutions is a Business Consulting company. The Cincinnati, Ohio-based agency was founded in 2009. Their team focuses on Business Consulting and Executive Search.Read More
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608Undisclosed10 - 49 employeesOak Brook, ILJR Bechtle & Co. Is a Business Consulting company. The Burlington, Massachusetts-based company was established in 1979. Their services include Business Consulting and Executive Search.Read More
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609$5,000+50 - 249 employeesChicago, ILEstablished in 2025, Kaiso Research & Consulting is a Market Research company. Their team provides Market Research and Business Consulting.Read More
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610Undisclosed50 - 249 employeesChicago, ILJabian Consulting is an IT strategy consulting company. The team specializes in IT strategy consulting and Business Consulting, and the firm is in Atlanta, Georgia and Charlotte, North Carolina.Read More
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611Undisclosed2 - 9 employeesChicago, ILDLW Business Consultants Ltd. Is a small Chicago, Illinois-based Business Consulting company. The team focuses on Business Consulting and Accounting.Read More
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612Undisclosed2 - 9 employeesSchaumburg, ILCall center KVP Consulting Services LLC. Is based in Schaumburg, Illinois. They offer Call Center Services and Business Consulting and were launched in 2010.Read More
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613Undisclosed2 - 9 employeesBarrington, ILDmar consulting llc, a small Accounting company, is in Barrington, Illinois. Their services include Accounting and Business Consulting.Read More
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614Undisclosed2 - 9 employeesAddison, ILE-MBE.net is a small Addison, Illinois-based Business Consulting company. Their services include Business Consulting and Market Research.Read More
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615Undisclosed2 - 9 employeesNiles, ILVidal & Associates Ltd is a Niles, Illinois-based Accounting company. They specialize in Accounting and Business Consulting and were founded in 2010.Read More
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616Undisclosed2 - 9 employeesChicago Heights, ILSmall Accounting company GW & Associates, is in Chicago Heights, Illinois. The team focuses on Accounting and Business Consulting.Read More
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617Undisclosed2 - 9 employeesChicago, ILR.C.P.A. & Associates is an Accounting company. They are based in Chicago, Illinois and have small team of experts. Their services include Accounting and Business Consulting.Read More
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618Undisclosed2 - 9 employeesChicago, ILIn Chicago, Illinois, Instra.Ai is a Business Consulting company. They specialize in Business Consulting and cloud consulting & SI.Read More
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619Undisclosed50 - 249 employeesChicago, ILPeloton Group is a big data analytics company. Their team is located in Boston, Massachusetts and Jersey City, New Jersey. The firm focuses on BI & big data consulting & SI and Business Consulting.Read More
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620Undisclosed10 - 49 employeesChicago, ILSmall Commercial Brokerage Services company Property Consultants Realty, is headquartered in Chicago, Illinois. The team offers Commercial Brokerage Services and Commercial Development.Read More
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621Undisclosed10 - 49 employeesLombard, ILSCGroup Real Estate is a Commercial Brokerage Services company. Launched in 2010, their team focuses on Commercial Brokerage Services and Commercial Financing.Read More
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622Undisclosed10 - 49 employeesChicago, ILRingold Financial Management Services Inc. Is an Accounting company. The team offers Accounting and Finance & Accounting Outsourcing (FAO), and the company is in Chicago, Illinois.Read More
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623Undisclosed10 - 49 employeesParis, ILLarsson, Woodyard & Henson, LLP is a business consulting and finance & accounting outsourcing (FAO) company. They provide business consulting and finance & accounting outsourcing (FAO) and were established in 1928. Their small team is Paris, Illinois-based.Read More
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624Undisclosed10 - 49 employeesChicago, ILRCF Economic & Financial Consulting is a Market Research company in Chicago, Illinois. The team provides Market Research and Financial Consulting.Read More
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625Undisclosed10 - 49 employeesChicago, ILDeRose Financial Planning Group is a Commercial Financing company. They are headquartered in Chicago, Illinois and have small team. They offer Commercial Financing and Accounting.Read More
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626Undisclosed10 - 49 employeesChicago, ILBased in Chicago, Illinois, The AddVantage Group is a Finance & Accounting Outsourcing (FAO) company. They provide Finance & Accounting Outsourcing (FAO) and Accounting.Read More
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627Undisclosed10 - 49 employeesNaperville, ILExecutive Search company NRH Search was launched in 1981. In Naperville, Illinois, the team offers Executive Search and Financial Consulting.Read More
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628Undisclosed10 - 49 employeesRosemont, ILHeadquartered in Rosemont, Illinois, Principle Construction Corp. Is a small Commercial Development company. Their services include Commercial Development and Architectural Design.Read More
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629Undisclosed10 - 49 employeesRoselle, ILSmall Market Research company CodaBears, Inc, is headquartered in Roselle, Illinois. Their services include Market Research and Conversion Optimization.Read More
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630Undisclosed10 - 49 employeesHoffman Estates, ILPCE Investment Bankers, Inc. Is a Commercial Financing company launched in 1997. The small team focuses on Commercial Financing and Business Consulting.Read More
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