The Big Four refers to the world’s largest accounting and professional services firms: Deloitte, PwC, EY, and KPMG. These firms provide services such as auditing, taxation, consulting, and financial advisory to major global companies and governments. Their importance lies in their global presence, strong expertise, and role in maintaining financial transparency. The Big Four help busi... https://thealgebragroup.com/accounting-firms-in-the-usa/