ACCT90009 Chap.3 Job Costing and Overhead Application

Job Costing and Overhead Application

Standard canon anchored to Week 3. Trace direct materials and labour, pool indirect resources, calculate a predetermined rate, apply it to actual job use and reconcile actual with applied overhead before judging margin.

Detailed chapter study map

AskSia Library · ACCT90009 · Strategic Cost Management · University of Melbourne JOB COSTING Week 3 · standard canon STANDARD CANON A job is the cost object Trace direct resources, apply indirect resources, then interpret the margin The official Week 3 topic is Job Costing.

This chapter supplies standard accounting canon rather than claiming a particular lecturer formula sequence or exam frequency. Job costing accumulates resources for a distinct order, contract, batch or project. Its strength is visibility: managers can see which work consumed materials, labour and support. Its danger is false precision when indirect costs are allocated through a convenient but weak driver.

Job-cost flow Direct resources are traced; indirect resources are pooled and

applied using a predetermined rate. The job sheet supports decisions, but its overhead amount remains provisional until actual and applied totals are reconciled. Original schematic. Three amounts, three evidence types Direct materials and direct labour are traced because source records link them economically to the job.

Manufacturing or service overhead is indirect to the job and is applied from a pool. The job total is therefore a combination of measured resource use and an allocation model. Keep that distinction visible when comparing margins. Why use a predetermined rate? Actual overhead arrives irregularly and total activity is known only after the period. Waiting would make job information late and volatile.

A budgeted rate stabilises timely decisions,

but it creates a reconciliation obligation: actual overhead and applied overhead will differ. i Decision uses Job cost can inform pricing, quotation, contract control, process improvement, customer negotiation and learning. It does not decide those questions alone. Capacity, future avoidability, quality, delivery and strategic relationship remain part of the recommendation. !

Allocated does not mean caused A job can receive overhead because it uses the chosen base even when that base does not cause the resource. Treat the assigned amount as decision evidence only after testing driver plausibility and the horizon. Trace what can be traced; allocate only what the decision genuinely needs allocated.

Job-costing principle {PG} · asksia.ai/explore AskSia Library · ACCT90009 · Strategic

Cost Management · University of Melbourne COST SHEET Cost sheet design Define the job boundary before collecting cost Authorisation, source documents, cut-off and completion status A job cost sheet is a controlled record for one cost object.

It identifies the job, customer or internal sponsor, timing, direct-resource transactions, applied overhead and status. The boundary matters: including pre-contract development, rework or post-delivery support can materially change apparent profitability. State the purpose before deciding which lifecycle stages belong to the job.

Record What it contributes Control question Materials requisition Quantity and value issued to the job Was the issue authorised and returned material credited? Time record Labour hours or effort by job Is non-productive time classified consistently?

Driver record Machine-hours, setups or another base Does it reflect resource consumption?

Completion notice Transfers accumulated cost out of work in process Is cut-off aligned with actual completion? Change order Separates scope growth from execution variance Did customer and manager approve it? Directness depends on economics A small component may be physically traceable but not worth tracing. Treating it as indirect can be efficient if the loss of decision relevance is minor.

Conversely, a large specialist subcontract should not be hidden in overhead merely because the system lacks a field. The information design should reflect materiality and decision usefulness. Rework needs a policy Normal rework may be absorbed across jobs; abnormal rework may be charged

to the responsible job or period. The policy changes reported job margins and behavioural incentives.

Make the classification transparent, analyse the cause separately and avoid using allocation to conceal a quality problem. P3.1 Boundary Answer included A design team spends 30 hours winning a contract before the job opens. Include it? Answer. For contract execution control it may remain selling/business-development cost. For customer lifecycle profitability it may belong to acquisition cost.

State the purpose; do not mix boundaries across customers. P3.2 Trace or allocate Answer included A $4 fitting is scanned to each job but the scanning process costs more than insight gained. What should change? Answer. Consider pooling the immaterial item and allocating with

a sensible base. Traceability is not automatically cost-effective; document the materiality policy.

{PG} · asksia.ai/explore AskSia Library · ACCT90009 · Strategic Cost Management · University of Melbourne OVERHEAD RATE Predetermined overhead Budget the pool and its allocation base Rate design, capacity denominator and unit discipline JOB-COSTING CORE [formula shown in the full chapter] [formula shown in the full chapter] Predetermined overhead bridge The rate is budgeted to provide timely job costs.

Applying it does not record what the organisation actually spent; reconciliation protects the margin interpretation. Original schematic. Numerator and denominator must describe the same pool, period and capacity logic. If the numerator contains machine support but the denominator is direct-labour hours, the model assumes labour hours explain machine-support consumption.

That may have been plausible

in a labour-intensive process and weak after automation. Denominator choice affects the rate Expected activity spreads the pool across forecast use. Practical capacity separates the cost of unused capacity rather than loading it into busy jobs. Normal capacity can smooth cycles. Each choice answers a

What this chapter covers

• 01

  Job cost sheet

• 02

  Predetermined overhead

• 03

  Under/over-application

• 04

  Profitability and quotation

AskSia-authored practice weighting (not an official mark scheme): Job K

Key terms

Applied overhead

Predetermined rate times actual job base.

Under-applied

Actual overhead exceeds applied under stated convention.

Job Costing and Overhead Application FAQ

Exam move

Practise rate units, job addition and period reconciliation. Bridge margin into commercial, operational, measurement and strategic causes.

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