Any costs incurred after split-off point to process or market the by-product are entered in separate accounts from those used for recording the costs of main product(s).
On income statement, the by-product figures are presented using one of the four approaches discussed in recognition of gross revenue method of costing by-products.
Under recognition of net revenue method, the journal entries involve charging all costs incurred on the by-product after split-off point against the revenue realized from the sale of by-product. Marketing and administrative costs, if any, are also assigned to the by products.
Some companies maintain an account named as “by-product account” to which all revenues realized from the sale of by-products are credited and all costs incurred on by-products after split-off point are debited.
The balance of the by-product account is disclosed on the income statement using one of the four manners discussed in recognition of gross revenue method of costing by-products.