Customer Margin Balance Reporting

FINRA Rule 4521 requires member firms that carry customer margin accounts to submit—via the Customer Margin Balance Form—the total of all debit balances in securities margin accounts, and all free credit balances in all cash accounts and all securities margin accounts on a settlement date basis as of the last business day of the month.

See a listing of customer margin balance form due dates.

Note: If a firm has no information to submit, it should note that on the report.

Accessing the Form

Firms that are required to file information pursuant to FINRA Rule 4521(d) must do so through the FINRA Firm Gateway, where the new Customer Margin Balance Form will be available beginning March 1, 2010.

Firms’ Regulation Filing Applications Account Administrator can provide access to the Customer Margin Balance Form in the Firm Gateway. See the Instructions for Requesting Entitlement to the Customer Margin Balance Form. Firms can also contact the FINRA Help Desk at (800) 321-6273.


For business-related questions, contact:

  • Theresa Reynolds, Credit Regulation Coordinator, Credit Regulation, at (646) 315-8567.