There are a few situations in which you must provide your Social Security (SSN) number to a business, including

  • becoming an employee or independent contractor for a business
  • engaging in a banking, financial or real estate transaction
  • applying for group health insurance through your employer
  • applying for credit

Even when there is no law requiring it, a business might request your SSN and deny you service if you refuse to provide it.

The Gramm-Leach-Bliley Act (GLB)—also known as the Financial Services Modernization Act of 1999—repealed laws that prevented the merger of banks, brokerage companies and insurance companies. Increasing the risk that financial institutions would have access to more personal information, it also added privacy protections that required all financial institutions to provide privacy notices to their customers and put measures in place to safeguard customers’ personal information.

Federal law requires banks and other financial institutions to put Customer Identification Programs in place to identify and verify the identity of their customers to prevent money laundering and the funding of terrorism.

While the bank has some flexibility in what they request from you, the minimum pieces of information that they’re required to gather for opening a new account are