What is a CSN and how do I get one?
A CSN, or California State Number, is a unique identifier assigned by the California Franchise Tax Board (FTB) for tax purposes. It is used to track tax returns and related filings for individuals and businesses in California. However, based on the retrieved context, there is no direct mention of a "CSN" (California State Number). The context references Internal Control Numbers (ICNs), which are used for security and processing purposes on tax forms, particularly for software-generated returns.
What is an Internal Control Number (ICN)?
The ICN is a security feature printed on tax forms to help prevent fraud and ensure accurate processing. For personal income tax returns, tax software companies are instructed not to print the ICN in the bottom margin on Side 1. Instead, they must place it in the upper right margin above the form number, in no larger than an 8-point font.
Where is the ICN Placed?
- Side 1 of forms: ICN must be placed in the upper right margin above the form number (for tax software companies).
- Other sides (2, 3, 4, etc.): ICN or symbols may be printed in either the top left/right or bottom left/right margins.
- Bottom margin placement: For certain forms, ICNs may be placed between print positions 11 and 28 on the left, or 57 through 75 on the right.
How to Obtain an ICN?
ICNs are automatically generated and assigned by the FTB for use on tax forms. Taxpayers or tax software providers do not need to request or obtain an ICN separately. The FTB provides guidelines for placement and formatting in publications such as FTB Pub. 1098 and Form 540-2EZ.
Relevant Forms and Publications
The following forms and publications provide guidance on ICN placement and other tax form requirements:
- Form 540-2EZ: Simplified California Individual Income Tax Return
- Form 3514: California Nonresident or Part-Year Resident Income Tax Return
- Publication 1098: Tax Form Specifications
- Publication 1061: California Taxpayer Guide
Source:
Form 540-2EZ
Form 3514
Publication 1061
Disclaimer: Always verify information with official Federal or State Department of Revenue Forms and Instructions.