• Lehman Brothers developed the Lehman formula to determine the commission an investment bank should receive for arranging client transactions.​​​​

  • Large investment banks partner with corporations to raise capital, often through initial public offerings (IPOs), mergers or acquisitions, or spin-offs.
  • For its services, an investment bank may charge a fixed fee for each transaction, receive commissions depending on the amount of the transaction in dollars, or a combination of both options.
  • The Lehman formula structures the investment banking fee as a percentage of the transaction amount based on a set of tiered fees.