Accounting Notes
Product Costing
Product Costing Approaches:
Pro cess Costing - System for assigning cost s to large numbers of identical units that usually
                   proceed in a continuous fashion though a series of uniform production steps
                   or processes. (Producing continuous flow of similar units)
Job Costing - System for assigning costs to a specific unit or to a small batch of products or
              services that (1) proceeds through production steps as a distinct identifiable job
              lot and (2) can vary considerably in terms of materials, labor, and overhead costs.
              (Producing different units for different jobs)
Journal entries to account for the different manufacturing costs:
During this next section it might be helpful to refer back to the flowchart in the notes for chapter
19 showing ho w the costs flow between the different accounts for a manufacturing company.
       Requisition of Materials into Production:
           When materials are introduced into production there are both direct and indirect
       materials used. The direct and indirect costs must be separated since they are accounted
       for with different accounts. The direct materials are added to the Work in Process
       Inventory while the indirect materials are added to the Manufacturing Overhead.
       Work In Process Inventory                   Direct Materials
       Manufacturing Overhead                      Indirect Materials
             Materials Inventory                                                Total materials
       Labor costs incurred:
          For a manufacturing company, when labor costs are incurred (or paid) the wages are
       debited to the Manufacturing Wages account instead of Wages Expense, as in a service
       business.
       Manufacturing Wages                         Labor costs
             Wages Payable (or Cash)                                            Labor costs
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Assignment of labor to production:
    As with the materials used, labor costs used in production must be separated into their
direct and indirect cost components. These costs are then transferred out of the
Manufacturing Wages and added to the Work in Process Inventory and Manufact uring
overhead accounts.
Work in Process Inventory                 Direct Labor
Manufacturing Overhead                    Indirect Labor
      Manufacturing Wages                                              Total Labor costs
Accounting for other Manufacturing Overhead costs incurred:
    In addition to indirect materials and labor there are other costs that a manufacturing
company incurs during the production process that can not be separated and assigned
directly to a specific unit or product in a easy and cost-effective manner. Some of these
costs include Depreciation, Utilities, Insurance, and Property taxes on the factory. It is
important to remember that these expenses must be on the factory facilities and not o n the
administrative offices. If the expenses are for the administrative office, then the expense
are debited to their normal expense accounts (Depreciation Expense, Utilities Expense,
etc...).
Manufacturing Overhead                    Depreciation Exp.
      Accumulated Depreciation                                         Depreciation Exp.
Manufacturing Overhead           Utilities costs
      Accounts Payable (or Cash)                                       Utilities costs
Manufacturing Overhead                    Insurance expired
      Prepaid Insurance                                                Insurance expired
Manufacturing Overhead           Property Taxes
      Accounts Payable (or Cash)                                       Property Taxes
Applying Overhead to production:
    The overhead costs added to the Manufacturing Overhead account must now be
applied to the units in the Work in Process Inventory. These overhead costs are applied
by using a predetermined overhead rate. This rate is determined by dividing the total
estimated overhead costs for the year by the estimated allocation base.
Predetermined            Total estimated Manufacturing Overhead
Manufacturing    =
Overhead rate                       Allocation Base
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       Allocation Base - a common denominator that links indirect costs to cost objects
                (products). Examples include Direct Labor hours, Direct Labor costs,
              or Machine hours
          When overhead is applied, it is added (debited) to Work in Process Inventory and
       credited to the Manufacturing Overhead account.
       Work in Process Inventory                   Applied Overhead
             Manufacturing Overhead                                             Applied Overhead
       Transferring of completed goods:
          When the products are completed, their costs must be transferred from the Work in
       Process Inventory and into Finished Goods Inventory.
       Finished Goods Inventory                    Cost of completed units
              Work in Process Inventory                                  Cost of completed units
       Sale of Goods:
            Accounting for the sale of goods is the same for a manufacturing business as for a
       merchandising business. There are two journal entries that must be done. The first entry
       is to record the price that the products were sold for and the second entry is to record the
       cost of producing those units.
       Accounts Receivable (or Cash)               Sales price
             Sales                                                              Sales price
       Cost of Goods Sold                          Cost of units
              Finished Goods Inventory                                          Cost of units
Accounting for Under- and Over-Applied Overhead:
If the amount is considered to be insignificant, it is closed (transferred) to the Cost o f Goods Sold
account.
       Cost of Goods Sold                          Under-applied amount
              Manufacturing Overhead                                            Under-applied amount
If the amount is considered to be significant, then it must be allocated between the Work in
Process Inventory, Finished Goods Inventory and Cost of Goods Sold accounts. The amount of
under-applied overhead is allocated based on the account balances.
                          Student Learning Assistance Center, San Antonio College, 2004
                         Ending           Proration
                         Balance
 Work in Process         $ X                 X / Total              "     Under-applied          $
                                                                          overhead
 Finished Goods             Y                Y / Total              "     Under-applied          $
                                                                          overhead
 Cost of Goods Sold         Z                Z / Total              "     Under-applied         $
                         _________                                        overhead           _________
                          Total                                                              Under-
                                                                                             applied
                                                                                             overhead
     Work in Process Inventory                   Allocated amount
     Finished Goods Inventory                    Allocated amount
     Cost of Goods Sold                          Allocated amount
            Manufacturing Overhead                                            Under-applied overhead
The allocation process and accounts used in the journal entries are the same for Over-applied
overhead as shown above for Under-applied overhead. The only difference is that the debits and
credits are reversed.
     Manufacturing Overhead                      Over-applied overhead
           Cost of Goods Sold                                         Over-applied overhead
or
     Manufacturing Overhead                      Over-applied overhead
           Work in Process Inventory                                  Allocated amount
           Finished Goods Inventory                                   Allocated amount
           Cost of Goods Sold                                         Allocated amount
                        Student Learning Assistance Center, San Antonio College, 2004