Top 100 Business Consulting Companies in Illinois
The Best of December 2025Looking 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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31$1,000+2 - 9 employeesChicago, IL7Alder, a business intelligence company, is in Chicago, Illinois. The firm provides BI & big data consulting & SI, business consulting, fractional cfo services, business valuation services, and more and has a small team.The firm was founded in 2022.Read More
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32Undisclosed10 - 49 employeesChicago, ILRead More
Strategex is a market research and business consulting company. Their small team is based in Chicago, Illinois. Their services include market research and business consulting.
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33Undisclosed1,000 - 9,999 employeesChicago, ILRead More
Barnes & Thornburg LLP is a large business consulting company in Atlanta, Georgia; Boston, Massachusetts and Chicago, Illinois. The team specializes in business consulting, corporate law, insurance law, tax law, and more.
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34Undisclosed10 - 49 employeesDowners Grove, ILExpress Property Solutions is a Business Consulting company headquartered in Downers Grove, Illinois. They specialize in Business Consulting.Read More
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35Undisclosed10,000+ employeesChicago, ILBDO is a large ERP consulting and SI company established in 1963. Their team offers ERP consulting and SI and Cybersecurity.Read More
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36$50,000+2 - 9 employeesChicago, ILIAR Consulting, a Business Consulting company, is headquartered in Chicago, Illinois. They offer Business Consulting and were launched in 2017.Read More
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37$1,000+10 - 49 employeesLisle, ILA3 Environmental Consultants is a Business Consulting company. The team focuses on Business Consulting, and the firm is based in Lisle, Illinois.Read More
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38$5,000+250 - 999 employeesDeerfield, ILKincentric, a Business Consulting company, was founded in 2019. Located in Deerfield, Illinois, the team specializes in Business Consulting and HR Consulting.Read More
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39$1,000+50 - 249 employeesElmhurst, ILAproove is a Business Consulting company established in 2004. The midsize team offers Business Consulting.Read More
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40$100,000+50 - 249 employeesChicago, ILFounded in 2000, Discover The Power of Your Data is a data analytics company and Business Consulting company. Their team offers BI & big data consulting & SI and Business Consulting.Read More
Industries
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41Undisclosed50 - 249 employeesEvanston, ILEstablished in 1990, Heart Certified Autocare is a Business Consulting company. In Evanston, Illinois and Wilmette, Illinois, the team offers Business Consulting and Other Marketing.Read More
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42Undisclosed2 - 9 employeesChicago, ILForrest Advisors is a Business Consulting company launched in 2020. Their team specializes in Business Consulting.Read More
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43Undisclosed10 - 49 employeesDes Plaines, ILIn Des Plaines, Illinois, Steersman Company is a Business Consulting company. The team focuses on Business Consulting.Read More
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44$10,000+2 - 9 employeesChicago, ILPlaybook Advisory is a Business Consulting company. They offer Business Consulting and were established in 2016. The agency is located in Chicago, Illinois.Read More
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45$1,000+50 - 249 employeesBannockburn, ILThe Auctus Group is a Bannockburn, Illinois-based Business Consulting company. The team focuses on Business Consulting and Financial Consulting.Read More
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46$10,000+2 - 9 employeesLake Forest, ILBusiness Consulting company Ignite Management Consulting offers Business Consulting and Corporate Training & Coaching. They were launched in 2011.Read More
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47$1,000+2 - 9 employeesGlenview, ILGet Real XR, a Business Consulting company, was founded in 2020. The team offers Business Consulting and AR/VR development and is in Glenview, Illinois.Read More
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48$1,000+50 - 249 employeesLeland Grove, ILZG Worldwide Consultants, a Business Consulting company, specialize in Business Consulting and Custom Software Development. They were launched in 2013.Read More
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49$250,000+2 - 9 employeesRolling Meadows, ILRead More
howtosellmybusiness.com is a business company based in Roling Meadows, Ill. with more than two experts. Since their founding in 1994, they have offered business consulting, marketing strategy, and other consulting solutions for both small and mid-market firms.
Clients
howtosellmybusiness.com/about/Industries
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50$5,000+2 - 9 employeesChicago, ILKGK & Company is a Business Consulting company. Their team is based in Chicago, Illinois and Highland Park, Illinois. The company focuses on Business Consulting and Conversion Optimization.Read More
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51$25,000+50 - 249 employeesChicago, ILSignFreaks is a Business Consulting company based in Chicago, Illinois. They offer Business Consulting and were founded in 1990.Read More
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52Undisclosed2 - 9 employeesChicago, ILNSP & Company is a small Business Consulting company. Launched in 2009, the team specializes in Business Consulting.Read More
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53$50,000+1,000 - 9,999 employeesChicago, ILWest Monroe is a cloud consulting & SI company. They offer cloud consulting & SI and CRM consulting and SI and were established in 2002.Read More
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54$5,000+2 - 9 employeesChicago, ILEffective Marketing is a media planning and buying agency launched in 2009. Their small team is located in Chicago, Illinois; Portland, Oregon; Portland, Maine and St. Louis, Missouri and specializes in Media Planning & Buying, Social Media Marketing, Market Research, Marketing Strategy, and more.Read More
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AMAIndustries
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55$10,000+2 - 9 employeesManhattan, ILBold Duck Studio is a Business Consulting company. They were launched in 2018, and their services include Business Consulting and Corporate Training & Coaching.Read More
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56$100,000+10 - 49 employeesBuffalo Grove, ILEstablished in 1990, Stivico LLC is a small Business Consulting company. Their services include Business Consulting.Read More
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CVS HEALTHIndustries
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57$1,000+250 - 999 employeesWarrenville, ILTekLink International Inc. Is a Warrenville, Illinois-based data analytics company. Founded in 1998, the team provides BI & big data consulting & SI and IT strategy consulting.Read More
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58Undisclosed50 - 249 employeesGlenview, ILRead More
Weiss & Company LLC was founded in 1968 and is headquartered in Glenview, Ill. They have a team of around 58 employees, focusing on tax preparation, bookkeeping, and payroll.
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59Undisclosed50 - 249 employeesChicago, ILRead More
ERP consulting and SI company Paro is in Chicago, Illinois. They offer ERP consulting and SI, business consulting, finance & accounting outsourcing (FAO), and accounting and were founded in 2015.
Industries
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60$5,000+2 - 9 employeesChicago, ILGround Floor Partners is a small Business Consulting company founded in 2002. Their team offers Business Consulting and Market Research.Read More
Industries
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