what are the different cost classifications?
direct costs - traceabel to a cost object (materials, labour)
Indirect costs - nto directly traceable (overheads)
Product costs - include in inventory (production costs)
Period costs - expensed in the period (admin, selling)
FIxed/variable/semi-variable/stepped costs
what are the different cost behaviours
fixed - conatnt in total, varies per unit
variable - constant per unit, varies in total
semi-variable - split into fixed + variable
stepped - Fixed over a range then increases
calculation for High low method
1) Chose the highest and lowerest activity levels
2) cal. The variable cost/unit = difference in cost/difference in activity
3) calc. The fixed costs = total costs at any level - (V/C X activity)
how to calculate absorption costing
1) calc. cost per unit = direct materials + D Labour + V OH + Fixed OH absorbed
2) calc. OAR = Budgeted OH / Budgeted Activity (units/hours)
3) the inventory valuation includes fixed overheads
how to calculate marginal costing
1) calc. Cost per unit = Variable costs only
2) contribution = sales - variable costs
3) profit = contribution - Fixed costs
Fixed overheads are period costs
inventory valued at variable costs only
Absorption Vs Marginal profit
Inventory ↑ → Absorption profit > Marginal.
Inventory ↓ → Absorption profit < Marginal.
No inventory change → Same profit.
Over/Under absorption
Over-absorbed: Absorbed OH > Actual OH.
Under-absorbed: Absorbed OH < Actual OH.
Causes: capacity changes, efficiency, and budget errors.
what is job batch costing
used when. goods are unique or produced in batches
- includes: materials, labour, overhead absorption
Batch costing: cost per unit = Batch cost /Units
what is ABC costing
overheads allocated by activities and cost drivers
Cost Driver rate = activity cost /driver volume
More accurate when produces differ in complexity
what is a cost centre
is a responsibility centre that incurs costs only, or a centre where the manager is purely responsible for managing costs
appraised on costs e.g IT support
what is a revenue centre
is devoted ot raising revenue without any link to the associated costs. might be encountered for non-profit orgs, or in the marketing operation raising sales
what is a profit centre q
If a manager is responsible for revenue as well as costs, the centre is a profit centre.
appraised on profit
what is an investment centre
if the manager is responsible for decisions as well as revenue and costs
appraised on relavent profit compared to investment
what are the different cost terms
cost centre - production or service location ‘charge costs to’
cost unit - what we sell
what are the 4 main elements of classifying costs
nature
element
function
behaviour
what is examples of classifying costs by element
materials
labour costs - salaries, wages etc
expense - such as rent, business rates, electricity
what is examples of classifying costs by function
production costs
non-production costs - not directly involved in making the product - e.g selling, admin, distribution and finance costs
what is examples of classifying costs by nature
Prime costs - all direct costs
Overheads - indirect costs but have been incurred in the produciton of products
what does cost behaviour mean
do they change with volume and activity and if so how much by
what are the different cost behaviours
what is the purpose of high low method
identify the fixed and variable costs
what is the cost equation
y = a + bx
y = dependent variable
a = intercept on Y-axis
x = independent variable
b = gradient on the line