Designers, please keep this on your radar as effective April 1st, 2019
Requirements for Certain Out-of-State Retailers
The new use tax collection requirement is not retroactive and applies only to sales made on and after April 1, 2019. For out-of-state retailers, the new collection requirement applies if, during the preceding or current calendar year, the retailer’s sales for delivery into California exceed $100,000 or the retailer makes sales for delivery into California in 200 or more separate transactions.
Link to New District Use Tax Collection Notice From the CDTFA