Secretary of State business entity identification numbers for tax returns and paymentsTax News Flash

March 3, 2026

Since 2025, the California Secretary of State has been issuing a 12-digit alphanumeric entity identification number to newly formed corporations, limited liability companies, and limited partnerships.

If you use tax preparation software to file returns or payments, electronically or on paper, follow the software instructions to enter only the numeric digits.

For payments submitted through FTB's Web Pay application, include only the numeric digits. The Web Pay application will display an error message if dashes, spaces, or alpha characters are entered.

Visit Web Pay for additional information.