In many cases, products are processed beyond the splitoff point to bring them to a marketable form or to increase their value above their selling price at the splitoff point. For example, when crude oil is refined, the gasoline, kerosene, benzene, and naphtha must be processed further before they can be sold. To illustrate, let’s extend the Farmland Dairy example.
Exhibit 17-5, Panel A, depicts how (1) raw milk is converted into cream and liquid skim in the joint production process and (2) how cream is separately processed into buttercream and liquid skim is separately processed into condensed milk. Panel B shows the data for Example 2.

Details of panel-1 are as follows:
Panel A:
Flowchart shows the joint costs and separable costs for example 2.
Joint costs of $400,000 involve 110,000 gallons of raw milk being sent for processing before reaching the splitoff point.
Separable costs involve the production of 25,000 gallons of cream and 75,000 gallons of liquid skim separated from raw milk after processing.
Separable costs involve the further processing of 25,000 gallons of cream which costs $280,000, and the further processing of 75,000 gallons of liquid skim costs, $520,000.
The further processing of products forms another set of joint products namely, 20,000 gallons of buttercream from 25,000 gallons of cream and 50,000 gallons of condensed milk from 75,000 gallons liquid skim.

Details of panel-2 are as follows:
Panel B:
Spreadsheet screenshot shows the data for example two and the flowchart explained above.
Joint costs (which is the costs of 110,000 gallons raw milk and processing to splitoff point): $400,000
Separable cost of processing 25,000 gallons cream into 20,000 gallons buttercream: $280,000
Separable cost of processing 75,000 gallons liquid skim into 50,000 gallons condensed milk: $520,000
Beginning inventory in gallons
Cream: 0
Liquid skim: 0
Buttercream: 0
Condensed milk: 0
Production in gallons
Cream: 25,000
Liquid skim: 75,000
Buttercream: 20,000
Condensed milk: 50,000
Transfer for further processing
Cream: 25,000
Liquid skim: 75,000
Sales in gallons
Buttercream: 12,000
Condensed milk: 45,000
Ending inventory in gallons
Cream: 0
Liquid skim: 0
Buttercream: 8,000
Condensed milk: 5,000
Selling price per gallon
Cream: $8
Liquid skim: $4
Buttercream: $25
Condensed milk: $22
The net realizable value (NRV) method allocates joint costs to joint products produced during the accounting period on the basis of their relative NRV—final sales value minus separable costs. The NRV method is typically preferred to the sales value at splitoff method only when selling prices for one or more products at splitoff do not exist. Using the NRV method, Exhibit 17-6, Panel A, allocates joint costs to individual products to calculate cost per gallon of buttercream and condensed milk. Panel B presents the product-line income statement. The gross-margin percentages are 22.0% for buttercream and 26.4% for condensed milk.

The spreadsheet shows two panels depicting the data for the products buttercream and condensed milk.
Panel A: Allocation of joint costs using net realizable value method
Final sales value of total production during accounting period
Buttercream (20,000 gallons multiplied by $25 per gallon): $500,000
Condensed milk (50,000 gallons multiplied by $22 per gallon): $1,100,000
Total: $1,600,000
Deduct separable costs
Buttercream: 280,000
Condensed milk: 520,000
Total: $800,000
Net realizable value at splitoff point
Buttercream: $220,000
Condensed milk: $580,000
Total: $800,000
Weighting
Buttercream (220,000 divided by 800,000 gallons): 0.275
Condensed milk (580,000 divided by 800,000 gallons): 0. 725
Joint costs allocated
Buttercream (0.275 multiplied by $400,000): $110,000
Condensed milk (0.725 multiplied by $400,000): $290,000
Total: $400,000
Production cost per gallon
Buttercream (the sum of $110,000 and $280,000 divided by $20,000 gallons): $19.50
Condensed milk (the sum of $290,000 and $520,000 divided by 50,000 gallons): $16.20
Panel B: Product-line income statement using net realizable value method for May 2017
Revenues
Buttercream (12,000 gallons multiplied by $25 per gallon): $300,000
Condensed milk (45,000 gallons multiplied by $22 per gallon): $990,000
Total: $1,290,000
Joint costs of goods sold
Buttercream (0.275 multiplied by $400,000): $110,000
Condensed milk (0.725 multiplied by $400,000): $290,000
Total: $400,000
Cost of goods sold: Separable costs
Buttercream (5,000 gallons multiplied by $4 per gallon): $280,000
Condensed milk (45,000 gallons multiplied by $4 per gallon): $520,000
Total: $800,000
Cost of goods sold: Production costs
Buttercream: $390,000
Condensed milk: $810,000
Total: $1,200,000
Cost of goods sold: Deduct ending inventory
Buttercream (8,000 gallons multiplied by $19.50 per gallon): $156,000
Condensed milk (5,000 gallons multiplied by $16.20 per gallon): $81,000
Total: $237,000
Total cost of goods sold
Buttercream: $234,000
Condensed milk: $729,000
Total: $963,000
Gross margin
Buttercream: $66,000
Condensed milk: $261,000
Total: $327,000
Gross margin percentage
Buttercream ($66,000 divided by $300,000): 22.0%
Condensed milk ($261,000 divided by $990,000): 26.4%
Total ($327,000 divided by $1,290,000): 25.3%
The NRV method is often implemented using simplifying assumptions. For example, even when selling prices of joint products vary frequently, companies assume a constant set of selling prices for the accounting period. Similarly, even if companies change post-splitoff processing to adjust to variations in input quality or local conditions, the NRV method assumes a specific constant set of such steps.