Chapter 4
Allocating Overhead
Predetermined Overhead Rate: Total est. Indirect costs divided by a cost driver
department overhead rates: allocated to each department, still uses one cost driver (best for companies with one product or service)
activity cost allocation: different cost allocation bases for each different activity.
Reasons Indirect Costs can be Skewed by Trad. Method
many different jobs use diff amount of resources
profits and losses don’t make sense
profit margin decreases
Creating ABC System
storyboarding: visualization tool to sequence events
activity dictionary: defines an activity and resources used and time spent
cost hierarchy:
unit level: single units or product
batch level: multiple units
product and customer level: specific product lines or customer
facility level: all of companies processes
Steps to ABC
est. total indirect costs w/ each activity
find allocation base and total expected activity for each activity
est. total quantity of each base
activity cost allocation rate = activity cost/ activity volume
assign indirect costs = allocation rate x actual quantity
ABC in Managerial Decision Making
how processes can be improved
value added activities: necessary efficient and customers will pay for
non value added activities: necessary or inefficient
assist with pricing, cutting costs, routine and control decisions
Drawbacks to ABC
complex to create
internal use only (not GAAP)
must be supported by all areas or will not work
consider cost benefits
Chapter 6
Cost Behavior
Variable Costs: changes in proportion to volume
VC per unit: same for each product
VC graph: starts at (0,0) rises up in straight line
Fixed Costs: do not change regardless of volume
FC per unit: decreases as volume increase
FC graph: begins at y where costs is, straight horizontal line
Mixed Costs: Change but not in direct proportion to volume, has added component
examples: commission, utilities, sell phones, some insurance with base costs
increases as volume increases
decrease as volume decreases
Cost Equation
y = mx+b
y: total costs
m: variable costs per unit
x: units
b: fixed costs
Other Info
relevant range: range where costs remain constant
step cost: fixed over a range, then increases
sunk costs: paid with no reward
Determining Cost Behavior
accounting analysis: determines if costs is fixed, variable or mixed
high low method: useful for mixed costs,
variable cost per unit formula: (high cost - low cost)/(high activity - low activity)
Total cost = plug variable cost per unit into cost equation
regression analysis: helps find most exact calculation of fixed and variable costs
r² : strength of relationship between cost an volume, 0 = none, 1 = perfect
y intercept coefficient: fixed cost
x intercept coefficient: variable cost per unit
How Does It Help?
variable cost scan be eliminated by reducing volume
fixed cost cannot be eliminated, shows it can be better to make more product than get rid of product line if losing money
Contribution Margin Income Statement
Sales Revenue - Variable Costs = Contribution Margin - Fixed Costs = Net Income
Absorption vs Variable Costing
GAAP Income Statement: Sales - COGS = Gross Profit - SGA Exp = Net Income, only expense fixed overhead until items are sold
Variable Cost: Not acceptable GAAP, expenses all fixed cost as incurred , regardless of when product is sold
Contribution Margin: amount of sales revenue that isnt going into variable costs, all profit (sales price - variable costs)
FOH absorption - inventory until sold; FOH variable: expensed as period cost
Chapter 7
CVP Analysis
relationship between costs volume and profit
formula for profit: profit: revenues - variable costs - fixed cost
revenues: sales price x unit sold
variable costs: vc x unit sold
fixed cost stay the same within relevant range
CVP Assumption
change in volume is the only factor that affects cost (disounts aren’t accounted for)
only variable or fixed ( no mixed)
inventory doesn’t differ
sales mix doesnt change
Unit Contribution Margin
used to determine margin breakeven and target profit amounts
Sales Revenue (sales /units) - variable costs (VC/units) = CM - Fixed cost (FC/units) = net income aka operating income
Contribution Margin Ratio: CM/Sales Revenue
sales price: VC/100% - cont ratio
Breakeven: (Fixed costs + net income)/ contribution margin per unit
target net income: (fixed cost + desired net income) / contribution margin per unit
Margin of safety: budget revenue - break even
operating leverage factor = cont margin/ operating income