Manufacturing Overhead
Indirect production costs.
Why This Matters
Direct materials and direct labor are easy to see and understand. You can point to a bag of coffee beans or a barista and say, "that cost goes into the product." Manufacturing overhead (MOH) is everything else required to run production — the rent on the shop, the utilities, the maintenance, the supervisor's salary, the equipment depreciation.
These costs are real, often large, and absolutely necessary for production, but they cannot be traced conveniently to individual units. They must be allocated. How you define, track, and allocate manufacturing overhead determines whether your product costs are realistic or fantasy.
If you ignore overhead, you understate product costs and overstate profit. If you allocate it badly, you distort which products appear profitable. Managing overhead correctly is the difference between knowing and guessing your true cost structure.
What Counts as Manufacturing Overhead
Manufacturing overhead includes all manufacturing costs except direct materials and direct labor.
MANUFACTURING OVERHEAD (MOH)
INCLUDES:
- → Indirect Materials
- → Indirect Labor
- → Factory Occupancy Costs
- → Production Equipment Costs
- → Production-Related Services
EXCLUDES:
- × Direct Materials (DM)
- × Direct Labor (DL)
- × Selling, General & Administrative (SG&A) expenses
Indirect Materials
Materials used in production that support the process but are too small or impractical to trace to each unit.
INDIRECT MATERIALS
Support production but cannot be economically traced per unit.
EXAMPLES:
- → Cleaning supplies and sanitizers
- → Lubricants for machines
- → Small tools, filters, rags, safety gloves
ABC COFFEE SHOP:
The cleaner used for the espresso machine after each shift is an indirect material. You don't track 0.03 ml of cleaner per latte; you treat it as overhead (~$0.03/cup in variable MOH).
Indirect Labor
Labor that supports production but cannot be traced to a specific product.
INDIRECT LABOR
EXAMPLES:
- → Production supervisors
- → Maintenance technicians
- → Quality control inspectors
- → Janitors and security assigned to the production area
ABC COFFEE SHOP:
The shop manager who supervises baristas and manages schedules is indirect labor — their time supports all drinks, not just any one. Annual manager salary: $18,000 (fixed MOH).
Factory Occupancy and Equipment Costs
The "keep the lights on" costs of running the production facility.
Factory Occupancy
- → Factory rent
- → Property taxes on production space
- → Factory insurance
- → Utilities for production area
Production Equipment
- → Depreciation on production equipment
- → Equipment maintenance contracts
- → Repairs on manufacturing machinery
ABC COFFEE SHOP — OCCUPANCY & EQUIPMENT (annual):
Rent (production area): $12,000
Equipment depreciation: $2,000
Factory share of insurance: $1,500
Variable utilities (production): ~$0.003/cup
Fixed occupancy + equipment: $15,500/year
MOH vs. Non-Manufacturing Overhead
It's important to distinguish between manufacturing overhead and overhead that belongs elsewhere:
Manufacturing Overhead (product cost)
- → Indirect costs inside the production function
- → Included in inventory and COGS
Non-Manufacturing Overhead (period cost)
- → Selling, marketing, and administrative overhead
- → Expensed as incurred in the period
EXAMPLES OF NON-MANUFACTURING OVERHEAD:
- → Office rent (non-production offices)
- → Corporate salaries (HR, accounting, executive team)
- → Advertising and promotion
- → Delivery vehicle expenses
- → Sales commissions
These never go into inventory; they go straight to the income statement.
At ABC, the cost of the seating area, the owner's admin time, and the marketing agency fee are non-manufacturing overhead — not part of product cost.
Fixed vs. Variable Components of MOH
Manufacturing overhead itself has both fixed and variable components.
FIXED MOH
- → Rent on production space
- → Depreciation on machines (straight-line)
- → Factory insurance
- → Salaried supervisors
Does not change with volume (within relevant range)
VARIABLE MOH
- → Indirect materials (cleaners, filters)
- → Variable portion of utilities
- → Indirect labor paid hourly (maintenance, QC)
Changes with production volume
| MOH Component | ABC Coffee Shop | Annual / Per Cup |
|---|---|---|
| Fixed MOH | Rent (production area) | $12,000 |
| Equipment depreciation | $2,000 | |
| Manager salary | $18,000 | |
| Total Fixed MOH | $33,500 | |
| Variable MOH | Indirect supplies + variable utilities | ~$0.033/cup |
| Total MOH at 85,000 cups | $36,305 | |
Why This Breakdown Matters
Understanding fixed vs. variable MOH is essential for CVP analysis and for variable vs. absorption costing. Fixed MOH per unit drops as volume rises; variable MOH per unit stays constant.
The Manufacturing Overhead Account
In the general ledger, MOH is often tracked in a control account that collects all actual overhead costs during the period.
MOH Accumulation and Application Flow
Actual MOH Incurred
Rent, utilities, indirect labor
MOH Control Account
Ledger accumulation
Applied via POHR
To Work in Process
Product Cost
DM + DL + MOH
Actual overhead is recorded as incurred; applied overhead uses a predetermined rate during production. The difference is closed at period-end.
TYPICAL JOURNAL ENTRIES
1) Recording actual overhead costs:
DR Manufacturing Overhead $X
CR Utilities Payable $X
DR Manufacturing Overhead $Y
CR Accumulated Depreciation $Y
DR Manufacturing Overhead $Z
CR Salaries Payable $Z
2) Applying overhead to WIP (using POHR):
DR Work in Process $A
CR Manufacturing Overhead Applied $A
Some systems use a single MOH account for both actual and applied overhead; others separate "Manufacturing Overhead Control" and "Manufacturing Overhead Applied." The key idea: actual overhead is what you really spend; applied overhead is what you assign to products using a rate.
At period-end, the difference between actual and applied overhead represents over- or underapplied overhead (covered in Overhead Application).
Overhead Control and Cost Management
Because overhead is indirect and often large, it's a primary target for cost management:
Budgeting
Overhead budgets set targets for rent, utilities, maintenance, and support labor.
Variance Analysis
Compare actual overhead to budgeted overhead to identify overspending or efficiency gains.
Process Improvement
Lean and Six Sigma initiatives focus on overhead drivers — setup time, downtime, rework.
OVERHEAD-REDUCTION STRATEGIES
- → Combining production into fewer setups to reduce setup costs
- → Investing in more efficient equipment to lower energy consumption
- → Standardizing processes to reduce rework and inspection time
- → Sharing production space to lower rent per unit
Done well, overhead management improves margins without necessarily cutting front-line labor or product quality.
Interactive Tool
Practice classifying ABC Coffee Shop costs as Direct Materials, Direct Labor, Manufacturing Overhead, or SG&A period costs.
Cost Classification Practice
For each ABC Coffee Shop cost, tap the correct category: Direct Materials (DM), Direct Labor (DL), Manufacturing Overhead (MOH), or SG&A period cost.
Coffee beans used in lattes
Milk and syrups per drink
Barista wages for preparing each drink
Shop manager salary (supervises production)
Rent for the production area
Espresso machine depreciation
Machine cleaning supplies after each shift
Maintenance technician wages
Instagram advertising spend
Owner's administrative time (accounting, strategy)
Seating area rent and décor
Variable utilities for espresso machines
Full MOH Build: ABC Coffee Shop
| MOH Category | Item | Amount | Per Cup (85K) |
|---|---|---|---|
| Fixed MOH | Rent (production) | $12,000 | $0.141 |
| Depreciation | $2,000 | $0.024 | |
| Manager salary | $18,000 | $0.212 | |
| Insurance | $1,500 | $0.018 | |
| Subtotal Fixed MOH | $33,500 | $0.394 | |
| Variable MOH | Indirect materials + utilities | $2,805 | $0.033 |
| TOTAL MANUFACTURING OVERHEAD | $36,305 | $0.427 | |
Combined with DM ($0.79) + DL ($0.25): Total product cost = $1.467/cup
MOH is applied to products via a predetermined overhead rate — covered in the next module on Overhead Application.
Common Mistakes
Mistake 1: Including SG&A in Manufacturing Overhead
❌ Wrong
Treating advertising, office rent, or owner admin time as MOH — inflates inventory and distorts product cost.
✅ Right
MOH is only indirect production costs. Selling and administrative expenses are period costs — expensed immediately.
Mistake 2: Classifying Traceable Materials as Indirect
❌ Wrong
Putting coffee beans or milk in MOH because they're "small costs" — understates direct materials and misstates prime cost.
✅ Right
If a material physically becomes part of the product and can be traced per unit, it's direct material — not overhead.
Mistake 3: Treating Supervisor Salary as Direct Labor
❌ Wrong
Classifying the shop manager's salary as direct labor because they "work in production" — understates MOH.
✅ Right
Supervisors support all products but cannot be traced to one unit — indirect labor, part of manufacturing overhead.
Key Takeaway
Manufacturing overhead is the collection of all indirect production costs — indirect materials, indirect labor, and factory-related occupancy and equipment costs. It excludes direct materials and direct labor (which are traced directly) and excludes selling/administrative overhead (which is a period cost). MOH contains both fixed and variable elements and is accumulated in dedicated ledger accounts before being applied to products via predetermined rates. Managing overhead effectively is central to accurate product costing and profitability.
Test Your Understanding
MOH definition, classification, and product vs. period costs — check your answers below.
Question 1: Which of the following is manufacturing overhead for ABC Coffee Shop?
Question 2: True or False: Manufacturing overhead includes all costs incurred by a manufacturing company.
Ready to Practice?
Classify costs as DM, DL, MOH, or SG&A, build overhead budgets, and model fixed vs. variable MOH in the Practice Lab.
Try the Practice LabWhat's Next?
Overhead Application — How to move overhead from the ledger into product cost using predetermined rates, and how to interpret over- and underapplied overhead variances.
Overhead Application
POHR, applied overhead, and variances
Manufacturing Costs
DM + DL + MOH = product cost