Cost of Goods Manufactured
The manufacturing cost schedule.
Why This Matters
The income statement shows Cost of Goods Sold (COGS) — but it doesn't show how that cost was built. For manufacturing companies, the underpinning is the Cost of Goods Manufactured (COGM) schedule, which summarizes all production costs incurred during a period and shows how they flowed through Work in Process (WIP).
COGM answers:
- How much did we spend on production this period?
- How much of that cost was transferred out of WIP into Finished Goods?
Without the COGM schedule, it's hard to reconcile changes in WIP and to see whether cost changes came from material, labor, or overhead. The COGM schedule is the missing bridge between detailed manufacturing activity and the single COGS line on the income statement.
COGM reconciles WIP inventory and decomposes manufacturing costs — without it, a single COGS number hides where costs are really coming from.
The COGM Formula
COST OF GOODS MANUFACTURED (COGM)
Beginning Work in Process
+ Total Manufacturing Costs
− Ending Work in Process
= Cost of Goods Manufactured
Where Total Manufacturing Costs = DM Used + DL + Applied MOH
COGM represents the total cost of all goods completed during the period and transferred from WIP to Finished Goods.
Step 1: Direct Materials Used
You rarely use "materials purchased" directly. Instead, COGM uses materials used, which must account for inventory changes.
DIRECT MATERIALS USED
Beginning Raw Materials
+ Raw Materials Purchases
= Raw Materials Available
− Ending Raw Materials
= Raw Materials Used
− Indirect Materials (if included in purchases)
= Direct Materials Used in Production
ABC COFFEE SHOP (ANNUAL):
Beginning Raw Materials (beans, milk, etc.): $4,000
+ Purchases during the year: $42,000
= Raw Materials Available: $46,000
− Ending Raw Materials: ($3,500)
= Raw Materials Used: $42,500
− Indirect Materials (cleaners, etc.): ($1,500)
Direct Materials Used: $41,000
Step 2: Total Manufacturing Costs
Add Direct Materials Used, Direct Labor, and Applied Manufacturing Overhead.
ABC COFFEE SHOP — TOTAL MANUFACTURING COSTS (ANNUAL)
Direct Materials Used: $41,000
Direct Labor: $21,250
Applied Manufacturing OH: $36,305
Total Manufacturing Costs: $98,555
These are the costs incurred in the current period and added to WIP.
Step 3: Cost of Goods Manufactured Schedule
Now incorporate WIP changes.
ABC COFFEE SHOP — SCHEDULE OF COST OF GOODS MANUFACTURED
For the Year Ended December 31, 2026
Work in Process, beginning: $3,200
Add: Total Manufacturing Costs
Direct Materials Used: $41,000
Direct Labor: 21,250
Manufacturing Overhead: 36,305
Total Manufacturing Costs: $98,555
Total Work in Process during period: $101,755
Less: Work in Process, ending: ($2,450)
COST OF GOODS MANUFACTURED (COGM): $99,305
Interpretation
- ABC completed and transferred $99,305 of product cost from WIP to Finished Goods during 2026.
- This will become part of the Cost of Goods Sold calculation once we adjust for Finished Goods inventory changes.
Step 4: COGM vs. COGS
COGM is not the same as COGS. COGM is about completion; COGS is about sales.
COST OF GOODS SOLD (COGS)
Beginning Finished Goods Inventory
+ Cost of Goods Manufactured
− Ending Finished Goods Inventory
= Cost of Goods Sold
ABC EXAMPLE:
Beginning Finished Goods: $7,800
COGM: $99,305
Ending Finished Goods: ($9,200)
COGS: $7,800 + $99,305 − $9,200 = $97,905
The remaining finished goods inventory stays on the balance sheet as an asset — not yet expensed. COGM ($99,305) exceeds COGS ($97,905) when ending FG inventory is higher than beginning.
From Production Costs to COGM
DM + DL + MOH
Total Mfg Costs
Work in Process
Beg + Added − End
COGM
Goods Completed
Finished Goods
Next: COGS
COGM is the cost of units completed — not sold. Finished goods inventory adjustments determine COGS on the income statement.
Why COGM Matters for Analysis
The COGM schedule gives management a clear decomposition of manufacturing cost changes:
- Did cost increases come from higher material usage or higher material prices?
- Are labor costs rising due to wage increases or overtime from inefficiencies?
- Is overhead higher due to rent increases, energy costs, or more maintenance?
- Is WIP growing? That might indicate bottlenecks, quality problems, or planning issues.
EXAMPLE INSIGHTS FROM ABC'S COGM
Direct materials increased 10% while volume increased 5% → potential waste.
Direct labor stayed flat while volume increased 10% → productivity improvement.
MOH increased sharply due to a rent increase → structural cost change.
Without the COGM schedule, these insights would be buried inside a single COGS number.
Interactive Tool
Build your own COGM schedule — adjust beginning WIP, DM used, DL, applied MOH, and ending WIP to see the schedule update in real time.
COGM Schedule Builder
Pre-filled with ABC Coffee Shop annual data. Enter beginning WIP, manufacturing costs, and ending WIP to build the schedule and calculate Cost of Goods Manufactured.
Total Manufacturing Costs
$98,555
DM + DL + MOH
Total WIP During Period
$101,755
Beg WIP + Total Mfg Costs
Cost of Goods Manufactured
$99,305
Total WIP − End WIP
Schedule of Cost of Goods Manufactured
Add: Total Manufacturing Costs
COGM FORMULA
Beginning WIP $3,200
+ DM Used $41,000
+ Direct Labor $21,250
+ Applied MOH $36,305
− Ending WIP ($2,450)
= COGM $99,305
COGM = cost of goods completed and transferred from WIP to Finished Goods this period.
Common Mistakes
Mistake 1: Using Materials Purchased Instead of Materials Used
❌ Wrong
Plugging $42,000 of purchases directly into COGM — ignores raw materials inventory changes and overstates DM used when inventory builds up.
✅ Right
Calculate DM used: Beg RM + Purchases − End RM − Indirect materials. Only materials actually consumed in production belong in COGM.
Mistake 2: Confusing COGM with COGS
❌ Wrong
Reporting COGM ($99,305) as COGS on the income statement — ignores finished goods inventory and misstates gross margin.
✅ Right
COGM = goods completed. COGS = goods sold. Roll COGM through finished goods: Beg FG + COGM − End FG = COGS.
Mistake 3: Forgetting Beginning or Ending WIP
❌ Wrong
COGM = Total Manufacturing Costs only ($98,555) — treats all current costs as completed when some remain in ending WIP.
✅ Right
Always reconcile WIP: Beg WIP + Total Mfg Costs − End WIP = COGM. Partially complete units stay in WIP at period end.
Key Takeaway
The Cost of Goods Manufactured schedule summarizes all manufacturing costs added to Work in Process during a period and reconciles them to the cost of goods completed. It starts with beginning WIP, adds Direct Materials Used, Direct Labor, and Applied Overhead, and subtracts ending WIP to arrive at COGM. COGM then feeds into the COGS calculation via the Finished Goods inventory roll-forward. The schedule is essential for understanding where manufacturing costs are coming from and how they change over time.
Test Your Understanding
COGM formula, DM used, WIP reconciliation, and COGM vs. COGS — check your answers below.
Question 1: Beginning WIP = $5,000. Direct materials used = $20,000. Direct labor = $15,000. Applied MOH = $10,000. Ending WIP = $4,000. What is COGM?
Question 2: True or False: COGM always equals COGS.
Question 3: Beginning Raw Materials = $4,000. Purchases = $42,000. Ending Raw Materials = $3,500. Indirect materials = $1,500. What is Direct Materials Used?
Question 4: Total manufacturing costs = $98,555. Beginning WIP = $3,200. Ending WIP = $2,450. What is COGM?
Ready to Practice?
Build COGM schedules from WIP roll-forwards, calculate direct materials used, and connect COGM to COGS in the Practice Lab.
Try the Practice LabWhat's Next?
Cost of Goods Sold (COGS) — Rolling COGM into the income statement, reconciling inventory accounts, and understanding how COGS connects operational performance to reported profit.
Cost of Goods Sold (COGS)
From inventory to expense
Overhead Application
POHR and applied vs. actual overhead