Where should I mail my 1099 NEC to the state of California and IRS? There is no mailing address that I can find online.

You can file the forms 1099-NEC that you issued to your contractors at the following addresses:

 

Federal (if you are domiciled in California):

 

Internal Revenue Service Center, 1973 North Rulon White Blvd, Ogden, UT 84201

 

California:

 

Franchise Tax Board, PO Box 942840, Sacramento, CA 94240-6090.