Short answer
The Boston Consulting Group began in 1963, when Bruce Henderson set up a consulting unit inside a Boston bank. BCG built its name on ideas: the Perspectives essays, the experience curve and the growth-share matrix. Employees bought the firm out by 1979. In 2025 BCG reported $14.4 billion in revenue and 33,500 employees, with over 40% of revenue from tech and AI.
Key takeaways
- Bruce Henderson founded BCG in 1963 as a consulting department of Boston Safe Deposit and Trust Company.
- BCG competed through published ideas: Perspectives essays from 1964, the experience curve in the mid-1960s and the growth-share matrix around 1968-1970.
- Bill Bain left BCG in 1973 to found Bain & Company, taking several colleagues and clients with him.
- Employees completed a buyout of BCG by 1979, making it an independent partnership.
- BCG reported $14.4 billion revenue and 33,500 employees for 2025, with over 40% of revenue from tech and AI work.
How did BCG begin?
BCG began in 1963, when Bruce Henderson, a former Westinghouse executive, set up a consulting department inside Boston Safe Deposit and Trust Company. He started with essentially himself and hired his first full-time consultant that December. In 2025 the firm he founded reported 33,500 employees.
Henderson wanted a firm that sold ideas about strategy, in a market then dominated by generalist consultants. That choice shaped everything that followed.
BCG timeline at a glance
| Year | Milestone |
|---|---|
| 1963 | Bruce Henderson founds the consulting unit in Boston |
| 1964 | First Perspectives essays published |
| 1966 | Experience curve developed; Tokyo office opens, BCG's second |
| 1968 | Unit formally named The Boston Consulting Group; growth-share matrix work begins |
| 1973 | Bill Bain leaves to found Bain & Company |
| 1979 | Employee buyout from the parent completed |
| 1980 | Henderson hands over the CEO role to Alan Zakon |
| 1988 | Time-based competition introduced in Harvard Business Review |
| 2021 | Christoph Schweizer becomes CEO |
| 2025 | $14.4 billion revenue, 33,500 employees, over 40% of revenue from tech and AI |
Sources differ on whether the growth-share matrix dates from 1968 or 1970. BCG's own history page uses 1968.
Perspectives: selling ideas in pocket-sized essays
From 1964, BCG published Perspectives, short essays on strategy printed as small brochures and mailed to executives. Each made one sharp argument in a few hundred words.
The format worked as marketing and as thought leadership at once. A CEO who found an essay persuasive called BCG. The series still runs today, and it set a pattern every strategy firm now copies.
The experience curve: why market share matters
In the mid-1960s, Henderson's team found that a company's unit costs fall by a predictable percentage, often 20-30%, each time its cumulative production doubles. They called it the experience curve.
The implication was strategic. If costs fall with volume, the company with the largest market share should have the lowest costs, and therefore the highest margins. Gaining share early became a strategy in itself, which was a new idea for many executives of the time.
The growth-share matrix: stars, cash cows, question marks and dogs
Around 1968-1970, BCG turned the experience curve into a tool for managing a portfolio of businesses. The growth-share matrix places each business unit on two axes: market growth rate and relative market share.
| Quadrant | Growth | Share | Typical action |
|---|---|---|---|
| Star | High | High | Invest to keep the lead |
| Cash cow | Low | High | Harvest cash to fund other units |
| Question mark | High | Low | Invest selectively or exit |
| Dog | Low | Low | Divest or restructure |
The matrix is simple enough to sketch on a whiteboard, which is why it still appears in business school courses and occasionally in case interviews.
Bill Bain's departure and the rise of a rival
Bill Bain joined BCG in 1967 and rose to vice president, widely seen as a possible successor to Henderson. In 1973 he left to found Bain & Company, taking several colleagues and clients with him. His firm focused on long-term relationships and implementation, a direct challenge to BCG's project model. The story continues in Bain & Company's history.
The departure stung, yet BCG kept growing. Henderson arranged an employee stock ownership plan, and by 1979 the staff had bought the firm from its parent, making BCG an independent partnership.
BCG today: technology and AI at the center
BCG's April 2026 press release reported revenue of $14.4 billion for 2025, up 7% from $13.5 billion, its 22nd consecutive year of growth. The firm employs 33,500 people, and over 40% of revenue came from tech and AI work. BCG X, its tech build and design unit, sits at the center of that shift.
When I wrote the original version of this article in 2012, BCG had roughly 4,400 consultants. The firm has grown several times over since, and the share of work involving data and software has grown with it. Compare this with McKinsey's history for the other side of the rivalry.
What BCG's history means in your interview
BCG's story gives you three practical angles for interviews.
- Show original thinking. BCG built its brand on new ideas. In the case, a creative but well-structured insight earns credit, as covered in our guide to the BCG case interview.
- Speak to the current firm. With over 40% of revenue in tech and AI, interviewers respond well to candidates who understand how data and software change client problems. Have one example ready.
- Use the classics carefully. Knowing the growth-share matrix helps you discuss portfolio questions. Use it only when the case is about allocating resources across several businesses.
Stephan's note: The candidates I coached who mentioned a specific BCG idea, and then questioned its limits, made a stronger impression than those who praised the firm in general terms.
BCG's online screens and written cases reward fast reading of dense exhibits. The Key to the PST trains that skill with 26 timed written-case questions and a full answer guide. It was built for McKinsey's now-retired PST, and the sub-skills carry over directly. For the legacy BCG test, see our BCG Potential Test guide.
Frequently asked questions
Who founded the Boston Consulting Group?
Bruce Henderson founded BCG in 1963 as the consulting arm of Boston Safe Deposit and Trust Company. He led the firm as CEO until 1980.
What is the BCG growth-share matrix?
It is a two-by-two grid that classifies business units by market growth and relative market share into stars, cash cows, question marks and dogs. BCG introduced it around 1968-1970 to help companies allocate cash across a portfolio.
What is the experience curve?
The experience curve holds that unit costs fall by a predictable percentage each time cumulative production doubles. Henderson's team developed it in the mid-1960s, and it implied that market share leaders enjoy a cost advantage.
How big is BCG today?
BCG reported revenue of $14.4 billion for 2025, its 22nd consecutive year of growth, with 33,500 employees in more than 100 cities. Over 40% of revenue came from tech and AI work.
Who is BCG's current CEO?
Christoph Schweizer has been CEO since 2021, succeeding Rich Lesser, who became global chair.