Cost Accounting Notes: Gross Profit Scenarios, CSR, Job Order Costing, FIFO

Baseline: revenue, gross profit, and cost of goods sold

• Revenue (sales): $600{,}000
• Gross profit percentage options discussed:
  • 25% gross profit: Gross profit = $600{,}000 × 0.25 = $150{,}000; Cost of goods sold (COGS) = Revenue − Gross profit = $600{,}000 − $150{,}000 = $450{,}000.
  • 30% gross profit: Gross profit = $600{,}000 × 0.30 = $180{,}000; COGS = $600{,}000 − $180{,}000 = $420{,}000.
• Practical takeaway: higher gross profit implies lower COGS for the same revenue.
• Key idea: determine cost structure (labor, materials, overhead) that supports a given gross profit target.

Cost structure and two procedures under a 30% gross profit target

• They compare two procedures with different cost compositions.
• Baseline assumption for procedure two (P2):
  • Labor = 60% of P2 cost
  • Materials = 30% of P2 cost
  • Overhead = 10% of P2 cost
• Target total cost given a 30% GP on $600{,}000 revenue is $420{,}000.
• They model three units of Procedure Two equaling the same total target: therefore
  • P2 = rac{420{,}000}{3} = 140{,}000.
• Procedure One (P1) is twice as expensive as Procedure Two:
  • P1 = 2 imes P2 = 2 imes 140{,}000 = 280{,}000.
• Cost distribution for Procedure Two (P2):
  • Labor: 140{,}000 imes 0.60 = 84{,}000.
  • Materials: 140{,}000 imes 0.30 = 42{,}000.
  • Overhead: 140{,}000 imes 0.10 = 14{,}000.
• Cost distribution for Procedure One (P1):
  • Labor: 280{,}000 imes 0.40 = 112{,}000.
  • Materials: 280{,}000 imes 0.45 = 126{,}000.
  • Overhead: 280{,}000 imes 0.15 = 42{,}000.
• Summary of total costs by procedure:
  • P2 total = $140{,}000
  • P1 total = $280{,}000
  • Combined total = $420{,}000 (matches target COGS).

Why do labor, materials, and overhead percentages differ between procedures?

• Different production setups yield different resource needs:
  • Labor-intensive operation uses more human labor (higher % labor).
  • Capital-intensive operation uses more equipment/machines (higher depreciation/overhead).
• Metaphor: cookie-baking examples illustrate variability in efficiency and waste.
  • Baking cookies at home vs. a fully automated bakery affects labor, materials, and overhead differently.
• Implications: even with same overall cost, the mix of labor, materials, and overhead changes, affecting decisions about automation, capacity, and pricing.

Practical implications and examples discussed

• Automation vs. manual processes:
  • Automation can reduce labor but may increase depreciation/overhead and maintenance costs.
  • Manual processes can lower depreciation but increase labor variability and time.
• Real-world analogies used:
  • Crumble Cookies: humans vs. machines influence labor intensity and waste.
  • Starbucks and self-checkout: automation affects consistency and customer experience.
  • CSR context: corporate social responsibility (CSR) and recycling of scrap impact cost structures.

CSR and recycling: impact on target gross profit

• CSR scenario: company recycles scrap materials and offsets direct materials cost with the scrap revenue.
• Given data (summary):
  • Direct materials for P1 constitute about 70% of P1’s cost (indirect materials account for the remaining 30%).
  • The company’s current total cost (P1 + P2) is $427{,}500, which is $7{,}500 above the target $420{,}000.
  • Scrap revenue offsets the cost of direct materials; the offset effectively reduces the direct materials cost part of P1.
  • Current overhead is about $30,000; if $7,500 must be saved to hit the target, the rearrangement focuses on the indirect materials portion via recycling.
• Calculation outline from transcript:
  • Target total cost: TC_{target} = 420{,}000.
  • Current total cost: TC_{current} = 427{,}500.
  • Required reduction to hit target: TC{current} − TC{target} = 7{,}500.
  • Overhead remains around 30{,}000. So, net reduction available through recycling of indirect materials must achieve the remaining gap while not exceeding the indirect-material share.
  • The lecturer states the result as approximately 22{,}400 ext{ (to break-even after applying CSR scrap offset and reallocation)}, noting some rounding in the example. The key point: CSR scrap revenue can offset direct materials (especially the indirect portion), helping approach the target gross profit percentage.
• Real-world takeaway: scrap monetization can help a company meet targeted gross margins, but the extent depends on how much of the cost is due to indirect materials and how much of the scrap revenue can be allocated to cost reductions in the target period.

Chapter 17 introduction: job order costing vs process costing

• Key definitions:
  • Process costing: used for mass production where many identical units are produced (e.g., milk, Doritos). Costs are averaged over large quantities.
  • Job order costing: used for customized or small-batch production where each job is distinct (e.g., custom guitars, personalized wedding cakes, landscaping for a specific yard, medical services).
• Why the distinction matters:
  • Process costing aggregates costs by department or process; unit costs are averaged.
  • Job order costing tracks costs by individual job to determine profitability per job.
• Real-world examples of job order costing:
  • Personalized apparel manufacturer, custom wedding cake, marketing plans for different companies, medical services, etc.
• Cost components in manufacturing:
  • Direct materials: raw materials directly traceable to the product.
  • Direct labor: labor directly traceable to the product.
  • Overhead (indirect manufacturing costs): electricity, depreciation, indirect materials like glue, indirect labor, etc.
  • Work in process (WIP): costs incurred on jobs not yet completed.
  • Finished goods: completed goods not yet sold.
  • Cost of goods manufactured (COGM): total cost of products completed during the period.
• Lean manufacturing principle mentioned: aim to reduce waste and improve efficiency (Six Sigma referenced).
• Flow of costs for a job: raw materials → WIP → finished goods → COGS when sold.
• Role of forecasting and allocation: overhead must be allocated to jobs using a predetermined overhead rate (POHR).

Direct vs indirect materials and overhead examples

• Indirect materials (not directly traceable to a specific job): glue, nails, small fasteners, some packaging that isn’t specific to a job.
• Direct materials (traceable to a specific job): fabric, boxes for shipping, the actual plastic bottles used for a product, the core fabric for a sofa.
• Overhead components: utilities, depreciation, indirect materials, indirect labor, insurance, etc.
• Example classification from the guitar manufacturer case:
  • Indirect materials example: glue (small, not easily traced to a single guitar).
  • Direct materials example: fabric for upholstery, specific packaging for a product.
  • Overhead example: depreciation on machinery, utilities, indirect labor (supervisors).

Job costing entries and overhead allocation concepts

• Preliminaries:
  • Jobs 71 and 72 as examples with separate direct materials, direct labor, and overhead allocation data.
• Predetermined overhead rate (POHR):
  • Formula: POHR = rac{ ext{Estimated Overhead}}{ ext{Estimated Activity Base}}.
  • Example in transcript: Estimated overhead = $50{,}000$; Estimated activity base = 10{,}000 hours; Thus
  • POHR = rac{50{,}000}{10{,}000} = 5 ext{ per hour}.
• Applying overhead to jobs:
  • Job 71: actual activity base = 350 hours → Overhead applied = 350 imes 5 = 1{,}750.
  • Job 72: actual activity base = 500 hours → Overhead applied = 500 imes 5 = 2{,}500.
• Journal entries concept:
  • Debit Work in Process (WIP) for the total applied overhead on each job.
  • Credit Factory Overhead (or Manufacturing Overhead) for the same amount to reflect overhead being allocated to WIP.
• The “plug amount” in overhead allocation:
  • In practice, the total overhead to be allocated must be allocated between jobs; a plug figure may be needed to balance the entry if actual vs applied costs differ.
• Actual vs applied overhead and under-/over-applied overhead:
  • Overapplied overhead: applied overhead > actual overhead.
  • Underapplied overhead: actual overhead > applied overhead.
  • End-of-period adjustment: typically closed to COGS or allocated to inventory accounts depending on company policy.
• Overhead allocation bases:
  • Activity bases can include: direct labor hours, direct labor cost, machine hours, or other activity measures.
  • The choice depends on what drives the overhead costs in the production environment (labor-intensive vs. capital-intensive).

Indirect materials, overhead, and the cost flow in a guitar manufacturer example

• Materials flow:
  • Raw materials received → Receiving report (barcode scan, inspection) → Debit Raw Materials; Credit Accounts Payable.
  • Requisition to production: Debit Work in Process; Credit Raw Materials.
• Labor flow:
  • Timekeeping: record hours and rates for jobs; Debit Work in Process; Credit Wages Payable.
• Overhead flow:
  • Overhead costs are allocated to jobs using POHR and then debited to WIP and credited to Factory Overhead as applied.
• Handling overhead variances:
  • If actual overhead differs from applied overhead, the difference is recognized as under- or over-applied overhead and typically adjusted at period end.
• Allocation example summary (from transcript):
  • Overhead pool: $50,000; Activity base: 10,000 hours; POHR = $5/hour.
  • Job 71: 350 hours → overhead applied = $1,750.
  • Job 72: 500 hours → overhead applied = $2,500.
  • Total applied overhead to WIP = $4,250 (sum of $1,750 and $2,500).
• Additional notes:
  • The discussion emphasizes that actual overhead costs vary due to factors like maintenance, downtime, employee sickness, weekend pay, strikes, etc., and may cause under- or over-applied overhead.

FIFO (First-In, First-Out) method overview with the provided example

• FIFO principle: use the oldest inventory first when issuing materials; newer purchases stay in inventory with their own cost per unit.
• Conceptual steps demonstrated in the transcript:
  • Start with an opening balance of inventory (older cost layer) and record any new receipts with their unit costs.
  • When issuing materials, begin with the oldest cost layer (opening balance) and move to newer layers as you exhaust older ones.
  • Maintain a running balance of remaining quantities and their associated costs.
• Example outline (from transcript):
  • May 4: Received 200 units at $8 per unit → add to inventory: 200 units @ $8.
  • May 10: Issued 330 units (total used) → first use 290 units from opening balance (cost per unit not clearly stated in extracted numbers, but used to compute base cost), then use 40 units from the $8 batch.
  • Cost of issued 330 = cost of 290 from opening layer + cost of 40 from $8 layer.
  • After May 10 issuance: remaining inventory comprises the residual from the $8 layer and any other layers.
  • May 21: Received 140 units at $10 per unit → add to inventory: 140 units @ $10.
  • May 17: Issued 190 units → use remaining 160 units from $8 layer first, then 30 units from the $10 layer.
  • Cost of issued 190 = (160 × $8) + (30 × $10) = $1{,}580.
  • Ending inventory after these movements: 110 units @ $10 per unit (from the $10 layer).
• Key takeaway: With FIFO, cost of goods sold for early issued units uses older costs, while ending inventory reflects newer cost layers.
• Practical point: FIFO maintains a stable cost flow that aligns with physical flow for many perishable or time-sensitive inventory scenarios.

Quick recap of core formulas (LaTeX-ready)

• Target COGS from gross profit: COGS_{target} = ext{Revenue} imes (1 - GP ext{%) }

• Target total cost corresponding to GP: TC{target} = ext{Revenue} - COGS{target} = ext{Revenue} imes GP ext{%}

• Procedure cost relation (P1 = 2 × P2): P1 = 2 imes P2

• Cost distribution for a given procedure (example):

  • Labor = P imes ext{Labor ext{ }percentage}
  • Materials = P imes ext{Materials ext{ }percentage}
  • Overhead = P imes ext{Overhead ext{ }percentage}

• Predetermined overhead rate (POHR): POHR = rac{ ext{Estimated Overhead}}{ ext{Estimated Activity Base}}

• Overhead applied to a job: Applied ext{ OH} = POHR imes Activity ext{ Base}

• COGM (Cost of Goods Manufactured):

  • COGM = Beginning ext{ WIP} + ext{Total Manufacturing Costs} - Ending ext{ WIP}

• COGS (cost of goods sold):

  • COGS = Beginning ext{ Finished Goods} + COGM - Ending ext{ Finished Goods}

• Gross Profit: Gross ext{ Profit} = Sales - COGS

• Net Income: Net ext{ Income} = Gross ext{ Profit} - Expenses

• FIFO inventory flow (conceptual): oldest cost layers are issued first; new purchases create new cost layers.

• Note on numbers in CSR example: some rounding and typographical inconsistencies appeared in the transcript (e.g., final break-even-like figure stated as about $22,400). The key idea is that scrap revenue offsets direct materials costs, which helps move toward the target gross profit, given the portion of P1 that is indirect materials.

Quick study tips based on these topics

• Always start with the target GP% when solving problems and derive COGS and total cost accordingly.
• For mixed-cost scenarios (multiple procedures or products), set up equations that reflect the relationship between the different procedures (e.g., P1 = 2 × P2) and solve step by step (e.g., find P2, then compute P1).
• When allocating overhead using POHR, choose a sensible activity base (labor hours, machine hours, etc.) based on what drives overhead in the production environment.
• Distinguish direct vs indirect materials clearly; this helps in accurately assigning overhead and in evaluating CSR decisions like scrap recycling.
• In job order costing, track costs by job (WIP) until completion, then move to finished goods and eventually COGS upon sale.
• FIFO vs other methods: understand how FIFO uses the oldest costs first and how that affects COGS and ending inventory values, especially when unit costs rise or fall over time.