management accounting week 9. o verview – c hapter 11 operations & accounting the value chain...
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MANAGEMENT ACCOUNTING
WEEK 9
OVERVIEW – CHAPTER 11
Operations & accounting The value chain Manufacturing v. services Standard costs Capacity utilization, spare capacity and
product mix
OPERATIONS & ACCOUNTING
Operations is the function that produces the goods or services to satisfy demand from customers purchasing,
manufacturing, distribution and logistics
Four aspects of the operations function: quality, speed, dependability and flexibility - each has cost implications Slack et al.
What is the cost of spare capacity?
What product/service mix should be produced where there are capacity constraints?
VALUE CHAIN
FFiigguurree 1111..11:: PPoorrtteerr’’ss VVaalluuee CChhaaiinn
FFiirrmm IInnffrraassttrruuccttuurree
HHuummaann RReessoouurrccee MMaannaaggeemmeenntt
TTeecchhnnoollooggyy DDeevveellooppmmeenntt
PPrrooccuurreemmeenntt
IInnbboouunndd OOppeerraattiioonnss OOuuttbboouunndd MMaarrkkeettiinngg SSeerrvviiccee LLooggiissttiiccss LLooggiissttiiccss && SSaalleess
SSuuppppoorrtt aaccttiivviittiieess
MMaarrggiinn
CCooppyyrriigghhtt PPoorrtteerr 11998855.. CCoommppeettiittiivvee AAddvvaannttaaggee NNeeww YYoorrkk:: FFrreeee PPrreessss
PPrriimmaarryy aaccttiivviittiieess
VALUE CHAIN- PORTER
‘a collection of activities that are performed to design, produce, market, deliver, and support its product … A firm’s value chain and the way it performs individual activities are a reflection of its history, its strategy, its approach to implementing its strategy, and the underlying economics of the activities themselves’ Porter
Costs should be assigned to the value chain but accounting systems can get in the way of analysing those costs Hierarchical
departments v. value processes
The cost drivers of each value activity should be analysed to enable comparisons with competitor value chains
FFiigguurree 1111..22 TThhee mmaannuuffaaccttuurriinngg pprroocceessss aanndd iittss rreellaattiioonnsshhiipp ttoo aaccccoouunnttiinngg IINNPPUUTTSS CCOONNVVEERRSSIIOONN PPRROOCCEESSSS OOUUTTPPUUTTSS CCuussttoomm BBaattcchh CCoonnttiinnuuoouuss RRaaww mmaatteerriiaallss WWoorrkk--iinn--pprrooggrreessss FFiinniisshheedd ggooooddss ++ LLaabboouurr ++ EEqquuiippmmeenntt,, ffaacciilliittiieess,, ssppaaccee,, eettcc.. BBiillll ooff MMaatteerriiaallss LLaabboouurr RRoouuttiinngg CCoommppoonneennttss && qquuaannttiittiieess pprroocceessssiinngg sstteeppss && ttiimmeess
WWhhiicchh aarree pprriicceedd ttoo bbeeccoommee
SSttaannddaarrdd ccoossttss
PRODUCTION METHODS
Custom Unique, single products
Batch A quantity of the same goods produced at the
same time ( a production run) Continuous (or process)
Continuous production process of the same, indistinguishable goods
MANUFACTURING V. SERVICESInventory
Raw materialsFinished goodsWork in progress
Costing methods Job costing
Bill of materials Labour routing
Process costing
SERVICES Differences
Intangibility, heterogeneity, simultaneity and perishability
TypesProfessional servicesMass services (transport, retail)Service shop (banks, hotels)
Fitzgerald et al. Professional service equal to customised or batch
manufacturing; mass service with continuous manufacture; and service shop as a batch-type process
- Slack et al.
STANDARD COSTS
Anticipated or budget cost for a unit or batch of units
Standard quantities multiplied by ‘standard’ costs: the current/ anticipated purchase prices for materials and labour rates of pay Materials, labour & overhead Expressed per unit
STANDARD COSTS
PPrriinnttiinngg ooff 55,,000000 ccooppiieess ooff aa tteexxtt bbooookk..
TThhee ccoossttiinngg ssyysstteemm sshhoowwss tthhaatt::
MMaatteerriiaallss ((ppaappeerr,, iinnkk,, eettcc..)) $$1122,,000000
LLaabboouurr ffoorr pprriinnttiinngg $$2200,,000000
OOvveerrhheeaadd aallllooccaatteedd $$1100,,000000
TToottaall JJoobb CCoosstt $$4422,,000000
CCoosstt ppeerr tteexxtt bbooookk (($$4422,,000000//55,,000000 ccooppiieess)) $$88..4400
CAPACITY UTILIZATION & THE COST OF SPARE CAPACITY
Utilization of capacity is a key performance driver
Accounting traditionally equates the cost of using resources with the cost of supplying resources
Unused capacity Reduce the supply of resources or Increasing the quantity of activities
Kaplan & Cooper Activity-based costing
cost of resources supplied – cost of resources used = cost of unused capacity
COST OF SPARE CAPACITY
Cost of resources supplied – cost of resources used = cost of spare capacity
10 staff @ $30,000 Cost driver is 2,000
transactions per person (capacity)
Cost of resources supplied 10 x $30,000 = $300,000
Standard cost per transaction is $300,000/20,000 = $15 per transaction
Actual 18,000 transactions
Cost of resources used 18,000 x $15 = $270,000
Cost of unused capacity = 300,000 – 270,000 = $30,000
CAPACITY UTILIZATION & PRODUCT MIX
Capacity as the limiting factor Ranking of product/services
Contribution per unit of limiting factor
CAPACITY UTILIZATION AND PRODUCT MIX
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$$115500 $$220000 $$222255
VVaarriiaabbllee mmaatteerriiaall ccoosstt ppeerr uunniitt
$$5500 $$8800 $$4400
VVaarriiaabbllee llaabboouurr ccoosstt ppeerr uunniitt
$$5500 $$6600 $$112255
CCoonnttrriibbuuttiioonn ppeerr uunniitt
$$5500 $$6600 $$6600
MMaacchhiinnee hhoouurrss ppeerr uunniitt
22 44 55
EEssttiimmaatteedd ssaalleess ddeemmaanndd ((uunniittss))
22,,000000 22,,000000 22,,000000
RReeqquuiirreedd mmaacchhiinnee hhoouurrss bbaasseedd oonn eessttiimmaatteedd ddeemmaanndd
44,,000000 88,,000000 1100,,000000
OOVVEERRAALLLL CCAAPPAACCIITTYY LLIIMMIITTAATTIIOONN 1100,,000000 MMAACCHHIINNEE HHOOUURRSS
CONTRIBUTION PER UNIT OF LIMITING FACTOR
PPaarrtt FF PPaarrtt GG PPaarrtt HH CCoonnttrriibbuuttiioonn ppeerr uunniitt
$$5500 $$6600 $$6600
MMaacchhiinnee hhoouurrss ppeerr uunniitt
22 44 55
CCoonnttrriibbuuttiioonn ppeerr mmaacchhiinnee hhoouurr
$$2255 $$1155 $$1122
RRaannkkiinngg ((pprreeffeerreennccee))
11 22 33
OPTIMUM CAPACITY UTILISATION
PPrroodduuccttiioonn CCoonnttrriibbuuttiioonn
22,,000000 ooff PPaarrtt FF @@ 22 hhoouurrss == 44,,000000 hhoouurrss.. 22,,000000 @@ $$5500 ppeerr uunniitt == $$110000,,000000
BBaasseedd oonn tthhee ccaappaacciittyy lliimmiittaattiioonn ooff
1100,,000000 hhoouurrss,, tthheerree aarree 66,,000000 hhoouurrss
rreemmaaiinniinngg,, ssoo BBeeaauuffoorrtt ccaann pprroodduuccee ¾¾
ooff tthhee ddeemmaanndd ffoorr PPaarrtt GG ((66,,000000 hhoouurrss
aavvaaiillaabbllee//88,,000000 hhoouurrss ttoo mmeeeett ddeemmaanndd))
eeqquuiivvaalleenntt ttoo 11,,550000 uunniittss ooff ppaarrtt GG ((¾¾
ooff 22,,000000 uunniittss))..
11,,550000 ooff PPaarrtt GG @@ 44 hhoouurrss == 66,,000000 hhoouurrss 11,,550000 @@ $$6600 ppeerr uunniitt == $$9900,,000000
MMaaxxiimmuumm ccoonnttrriibbuuttiioonn $$119900,,000000
TThheerree iiss nnoo aavvaaiillaabbllee ccaappaacciittyy ffoorr PPaarrtt HH..
BOTTLENECK CAPACITY Seating capacity in restaurant = 100 seats
but not all can be served simultaneously Bottleneck capacity is ability of kitchen to
serve a maximum of 70 people at the same time Medium term: increase kitchen capacity or
reduce seating capacity Short term: capacity limitation is 70, not 100
Note: in this example waiters are a variable labour cost, kitchen staff are a fixed labour cost
THROUGHPUT ACCOUNTING Theory of constraints
Bottleneck defines capacity
Throughput contribution = sales – cost of materials
All other costs are fixed Ranking of product/services
Throughput contribution per unit of bottleneck resource
THROUGHPUT CONTRIBUTION
PPaarrtt FF PPaarrtt GG PPaarrtt HH SSeelllliinngg pprriiccee ppeerr uunniitt $$115500 $$220000 $$222255 VVaarriiaabbllee mmaatteerriiaall ccoosstt ppeerr uunniitt
$$5500 $$8800 $$4400
TThhrroouugghhppuutt ccoonnttrriibbuuttiioonn ppeerr uunniitt
$$110000 $$112200 $$118855
MMaacchhiinnee hhoouurrss ppeerr uunniitt 22 44 55 RReettuurrnn ppeerr mmaacchhiinnee hhoouurr
$$5500 $$3300 $$3377
RRaannkkiinngg ((pprreeffeerreennccee)) 11 33 22 PPrreevviioouuss rraannkkiinngg 11 22 33
Product R Product S
Selling price $12 $20
Materials $4 $11
Labour hours
2 4
Machine hours
4 3
ILLUSTRATIVE QUESTIONS
Q 11.2 Maxitank makes two products. Its costs are:
Maxitank’s sales are limited by the bottleneck (machine) capacity of the factory. Which of the two products should be produced first in order to maximize the throughput contribution generated from the limited capacity?
Product R Product S
Selling price $12 $20
Materials $4 $11
Labour cost $2 $5
Labour hours
2 4
VARIATION TO Q11.2
Maxitanks’ cost of labour is now included:
Which of the two products should be produced first in order to maximize the profits generated from the limited capacity, taking material and labour costs into account?
Q 11.5
Sales 12,000 units @ $100 $1,200,000
Variable costs 588,000
Contribution margin 612,000
Fixed costs 245,000
Profit $367,000
Harrison products capacity is 20,000 units per year. Their results for last year are:
Harrison expects its regular sales next year to be 15,000 units. They also expect fixed costs to increase by $100,000. A foreign distributor has offered to buy a guaranteed 8,000 units at $95 per unit next year. Should Harrison accept this offer?