Any manufacturer or refiner that claims its consumed by-products are not subject to tax, because of the physical commingling of property purchased and property not so purchased, must establish by its records that this commingling occurred prior to such consumption.
The following formulas summarize the above steps:
MV = Market Value
PC = Purchase Cost
SC = Separable Costs Beyond Split-Off
bp = By-Products Used
tp = Total Products and By-Products
Where no processing is necessary beyond split-off to obtain market value so that MV equals market or sales value at split-off:
NOTE: MV - SC = Net Realizable Value at Split-Off
Cal. Code Regs. Tit. 18, § 1525.5
Note: Authority cited: Section 7051, Revenue and Taxation Code. Reference: Sections 6094 and 6244, Revenue and Taxation Code.