Final Review
Formulas You Must Know
Cost Accounting
Cost of Goods Manufactured:
Beginning Raw Materials Inventory
+ Purchases of Raw Materials
– Ending Raw Materials Inventory
= Materials Used in Production
+ Direct Labor
+ Manufacturing Overhead (list all costs)
= Total Manufacturing Costs
+ Beginning Work in Process Inventory
– Ending Work in Process Inventory
= Cost of Goods Manufactured – Finished Goods
Material used is included in the cost to make the products.
Direct labor used to assemble the products or operate the machines
Manufacturing overhead costs are costs with the word “plant”, “manufacturing”, “factory”,
and “indirect” in the description.
Inventory: Materials or product not yet sold reported on balance sheet
Cost of Good Sold: The cost of product sold in the current period; report on income statement
Cost of Goods Sold for the Income Statement:
Beginning Finished Goods Inventory
+ Cost of Goods Manufactured
= Goods Available for Sale
– Ending Finished Goods Inventory
= Cost of Goods Sold
Income Statement:
Sales
– Cost of Goods Sold
= Gross Profit
– Operating Expenses (Sell/ G&A/ Warehouse)
= Operating Income
Predetermined Overhead Rate:
Total Estimated Manufacturing Overhead Costs
Estimated Total Annual Activity
= $ cost per activity
The estimated cost in overhead dollars every time the activity occurs.
Apply Overhead:
Predetermined overhead rate ($ per activity)
x the actual amount of the activity used for the job or period
= the estimated amount of manufacturing overhead costs added
The Cost of Producing a Job:
Direct Material
+ Direct Labor
+ Manufacturing Overhead
= Total Cost of the Job
High Low Method: Use to find the fixed and variable parts of the cost
1st Write the lowest level of activity and the highest level of activity on bottom line
2nd Write the dollars on the top that are in the same period as the high and low activity
Cost at high activity level – cost at the low activity level
High activity level – Low activity level
= Variable Cost per Activity
Total Mixed Cost
– Total Variable Cost (cost per x quantity)
= Total Fixed Cost
High – Low Cost Formula:
Total Cost $ = Total Fixed Cost $ + (variable cost $ per activity X # activity)
Contribution Margin
Sales
– All Variable Costs
= Contribution Margin
Contribution Margin Ratio
Contribution Margin
Sales
Break Even
Profit = 0
Contribution margin = fixed expenses
Break Even Quantity in Units
Fixed Expenses
Contribution Margin Per Unit
To Get Break Even in Sales $
Fixed Expenses
Contribution Margin Ratio (%)
Add the desired profit to the fixed cost in the break-even formula to determine required sales or units to achieve a desired profit before tax.
Margin of Safety
Total Budget or Current Sales
– Break Even Sales
Margin of Safety %
Margin of Safety
Total Budget or Current
Operating Leverage Factor:
= Contribution Margin
Operating Income
% Increase in Profits from % Sales Increase
Factor
x % increase in sales
= % increase in profits
Operating leverage factor
x % increase in sales
= % increase in profits
x Current profits
= Added profits
+ Current profits
= Expected profits
Steps to take to implement ABC costing:
1) Identify activities (cost drivers) to support products or services
2) Identify the cost pools that match the activity (group costs in cost pools)
3) Calculate the rate per:
Total cost pool $
Total cost driver
= $ Rate per activity
Many activity rates per (one for each activity).
4) Assign costs to cost objects (product or customer)
$ rate per activity
x # actual activity for that product/customer
= total costs assigned to the product or customer
Total overhead costs assigned
Number of total units
= overhead cost per unit
Variable Cost Variances:
Fixed Overhead Variances:
Absorption Costing:
Sorts costs by product and period
Sales
– CGS (DM, DL, FMOH + VMOH)
=Gross Profit
– Period Expenses (ALL)
=Income Before Tax
Variable Costing:
Sorts costs by variable and fixed
Sales
– Variable Product Costs (DM + DL + VOH)
= Product Contribution Margin
– Variable nonmanufacturing period expenses
= Total Contribution Margin
– Fixed Expenses (ALL – including manufacturing overhead)
= Income Before Taxes
Total Variable costs =
Cost per unit
x Quantity of units sold
Calculate units sold if not given:
Beginning Finished Goods Inventory in Units
+ Units Produced This Period
– Ending Finished Goods Inventory in Units
= Quantity of Units Sold
Also use to get units produced if not given to you, put in what you know and plug to find units.
The difference in income reported on the two income statements
Units Made
– Units Sold
= Change in Inventory in units
x Fixed Overhead Rate per unit (see below)
= Difference in Income for the two statements
Allocate Joint Costs
Quantity:
Total Joint Cost
Total physical base
= $ Cost Per x quantity related to each product
Sales Value at Split-Off:
Sales value at split-off
x Units sold
Net Realizable Value:
Sales price at split off
– Cost to sell/dispose
Approximate Net Realizable Value:
Final Sales Price
– Incremental processing and selling costs