Where do I find the business code for my form 3514?

[MinhT1]

For CA form 3514, you can use the business code used in Federal Schedule C or Schedule F.

The principal business or professional activity code is a six digit number that represents the field of work you are in. This code is entered on your Schedule C. The complete list of codes can be found on pages 19 to 21 of this IRS document.

This code is for statistical purposes only and does not affect your tax. If you do not find a code corresponding to your activity, you can enter 999999.