The California Tax Credit Allocation Committee (TCAC) updated its Form B to include instructions. Placed in Service (PIS) packages submitted on March 1, 2021 and later must use the updated Form B. For PIS packages submitted before or on Feb. 28, 2021, you can use the existing Form B. However, if a critical update is required on the Form B TCAC may require a new Form B be filled out using the updated Form B.