What should taxpayers do if they changed their address during the year?
Notify us immediately. Website: Go to ftb.ca.gov to access their account and change their address online. Telephone: 800.852.5711 Mail a completed FTB 3533, Change of Address to: FRANCHISE TAX BOARD PO BOX 942840 SACRAMENTO CA 94240-0002 Each year, the U.S. Post Office returns millions of dollars in refund checks to us as undeliverable. This is generally because taxpayers moved after they filed their taxes. The post office does not forward refund checks.