Costing links Industrial Engineering (SMV, CPM) with the reality of Commercial, Finance and Production. A proper costing model helps factories to:
- Quote competitive prices
- Control production cost
- Negotiate effectively with buyers
- Prevent hidden losses during execution
Types of Garment Costing
As costing helps determine the price of a product and ensures profitability. It is generally divided into two main types: pre-costing (estimated costing) and post-costing (actual costing). Both play an important role at different stages of production and help manufacturers plan, control and evaluate costs effectively
Pre‑Costing (Estimated Cost)
Pre-costing is prepared before order confirmation and is mainly used for price quotation and negotiation with buyers. At this stage, actual production has not yet started, so costing is based on estimations and standard values.
Manufacturers calculate expected costs by considering factors such as SMV (Standard Minute Value), planned efficiency and estimated material consumption. Since it is based on assumptions, accuracy depends on the experience and planning capability of the merchandiser and IE team.
Key features of pre-costing:
- Prepared before production begins
- Based on estimated SMV and efficiency
- Uses planned fabric and trim consumption
- Helps in price negotiation and order confirmation
Post‑Costing (Actual Cost)
Post-costing is prepared after production is completed and reflects the actual cost incurred during manufacturing. It is based on real production data, including actual efficiency levels and material consumption.
This type of costing helps identify gaps between estimated and actual costs, allowing factories to analyze performance and improve future planning.
Key features of post-costing:
- Prepared after production completion
- Based on actual efficiency and production performance
- Uses actual fabric and trim consumption
- Helps in variance analysis and cost control
Core Costing Concepts
Garment costing is based on a combination of different cost elements that together form the final price of a product. Understanding these components is essential for accurate pricing, cost control and profitability.
In simple terms, the total cost per garment is calculated by adding material cost, labor cost, processing cost, overhead and profit margin.
Cost per Piece = BOM Cost + Labor Cost + Operational Cost + Embellishment Cost + Overhead + Profit
BOM cost represents the total material cost used to produce one garment. It is usually the largest part of costing.
BOM Includes: Fabric cost (main material), Trims and accessories (buttons, zippers, labels, thread, Carton and packing materials etc.
Labor cost is the cost of stitching and assembling the garment. It is calculated using SMV (Standard Minute Value) and CPM (Cost Per Minute).
Labor Cost = SMV × CPM
Operational Cost: Operational cost includes all indirect costs required to keep production running efficiently. These are not linked to a single garment but support the entire process. it includes HR and administrative staff, Supervisors and line in-charges, Quality control team, Electricity and utilities, Factory building (land/infrastructure), Machinery and equipment ( all cost related to keep running worker production)
Embellishment Cost:This includes additional processes applied to enhance the appearance or functionality of the garment. Includes Washing (enzyme, garment wash, etc.), Printing, Embroidery, Special finishes
Overhead & Support Cost: Overhead costs are indirect expenses related to maintaining business operations and compliance.
Includes Sampling and development cost, Marketing and sales expenses, Compliance and audit costs, Safety and regulatory costs
BOM cost
Material cost
Material cost includes cost of Main shell Fabric , Trims & Accessories, Packing accessories cost
Fabric Cost
Fabric cost is calculated using consumption × fabric unit price. Factors affecting fabric costing:
- GSM and width
- Shrinkage
- Fabric wastage %
- Dyeing / finishing cost
- Freight and duty
Trims & Accessories Cost
This includes all additional materials used in the garment. Includes:
- Sewing thread
- Buttons, zippers
- Labels and tags
- Interlining
- Hangtags
Costing is based on per‑piece consumption.
Packaging & Carton Cost
Packaging varies depending on buyer requirements. Includes:
- Polybags
- Size stickers
- Cartons
- Inner packing materials
Packaging cost varies by buyer standard.
Labor cost
CPM Costing
CPM (Cost Per Minute) is a widely used method in garment manufacturing to calculate labor cost and overall garment cost. It helps factories understand how much each minute of production costs and allows accurate pricing, planning and profitability control.
The CPM approach breaks down all factory expenses, converts them into per-minute cost and then applies it with SMV (Standard Minute Value) to calculate garment cost. It is a practical and structured method used by merchandisers and IE teams.
Step 1: Identify direct Labor Cost
The first step in CPM costing is to calculate the cost of worker.
Direct Labor Cost:
These are workers directly involved in production.
- Operators’ wages
- Helpers’ wages
- Supervisors’ salaries
- Line quality staff
Step 2: Identify Indirect / Operational Cost
Indirect Labor Cost
These costs support production but are not directly involved in the manufacturing process:
- Maintenance Staff
- Store & Material Handlers
- IE (Industrial Engineering) & Planning Staff
- HR & Administration Staff
Administrative & Support Cost
These are management and office-related costs:
- Management Salary
- Finance & Accounts
- Security
- Training
Quality & Compliance Cost
Often ignored, but very important in real costing.
- In‑line inspection cost
- Final audit costs
- Compliance certifications
- Rework & alteration allowance
Factories should allocate quality loss % in costing.
Power & building Cost :
These are additional expenses required to run the factory.
- Rent / building depreciation
- Electricity & utilities
- Machinery depreciation
- Maintenance & spare parts
Step 3: Calculate Available Sewing Minutes
Available Minutes =Operators × Working Days × Working Hours × 60 × Efficiency
Efficiency adjustment ensures CPM reflects real production capability, not theoretical time.
Step 4: CPM calculation
CPM = (Labor Cost+ Operational Cost) ÷ Total Available Minutes
CPM converts time (SMV) into cost, making it the backbone of garment costing.
Labor Cost per Garment (Using CPM)
Labor Cost per Piece = SMV × CPM
Example:
- SMV = 10.0
- CPM = $0.045
Labor Cost = 10 × 0.045 = $0.45 / pc
Processing & Value‑Added Cost
Additional costs applied after sewing:
- Printing
- Embroidery
- Washing
- Special finish (enzyme, silicon, etc.)
- Heat transfer / foil
These are often charged per piece or per lot.
Washing Costing (If Applicable)
Factors:
- Garment weight
- Wash type
- Rewash risk
- Yield loss
Washing cost must also include:
- Reject risk buffer
- Shade variation handling
Overhead
These costs are related to compliance, shipment and business processing.
- Sampling cost
- Compliance & safety cost
- Factory insurance
- IT & software licenses
Commercial Costs Include:
- Banking charges
- Export documentation
- Inspection fees
- Courier samples
Logistics Costs Include:
- Inland transport
- Handling charges
- FOB / CIF related costs
Margin & Profit Calculation
After total cost is calculated, margin is added. Typical profit margin:
- CMT: 5–8%
- FOB: 8–15%
Final FOB Price = Total Cost + Profit Margin
Example: Simple Garment Cost Sheet (FOB)
|
Cost Element |
USD / pc |
|
Fabric |
2.40 |
|
Trims |
0.40 |
|
Labor (SMV × CPM) |
0.45 |
|
Washing |
0.35 |
|
Overhead |
0.20 |
|
Packaging |
0.10 |
|
Commercial |
0.05 |
|
Total Cost |
3.95 |
|
Profit (10%) |
0.40 |
|
FOB Price |
4.35 |
Wrong Costing vs Correct Costing
|
❌ Wrong Costing |
✅ Correct Costing (Correct Approach) |
|
Ignoring efficiency loss |
Considering realistic efficiency in CPM calculation |
|
Underestimating fabric wastage |
Including actual fabric wastage % in costing |
|
No buffer for rejection |
Adding rejection and risk buffer in costing |
|
Unrealistic CPM assumptions |
Calculating CPM based on actual factory data |
|
Margin calculated on hope |
Margin calculated based on validated total cost |
Garment Costing Sheet (Example: Basic Knit T-Shirt)
📌 Assumptions
- Style: Basic Cotton T-Shirt
- Fabric: 160 GSM Single Jersey
- Order Qty: 10,000 pcs
- SMV: 12 minutes
- CPM: $0.06
1. BOM Cost (Material Cost)
|
Item |
Consumption |
Unit Price ($) |
Cost per Piece ($) |
|
Main Fabric |
0.55 kg |
3.20/kg |
1.76 |
|
Rib (Neck) |
0.03 kg |
4.00/kg |
0.12 |
|
Sewing Thread |
120 m |
0.0005/m |
0.06 |
|
Label (Main + Care) |
1 set |
0.05 |
0.05 |
|
Polybag + Carton |
1 set |
0.20 |
0.20 |
|
Total BOM Cost |
2.19 |
2. Labor Cost
Formula:
Labor Cost = SMV × CPM
Calculation:
= 12 × 0.06
= 0.72 USD
3. Operational Cost
|
Component |
Cost per Piece ($) |
|
Supervisor & Admin |
0.08 |
|
Utilities (Electricity, Water) |
0.06 |
|
Machine Depreciation |
0.05 |
|
Maintenance |
0.03 |
|
QA/QC Staff |
0.04 |
|
Total Operational Cost |
0.26 |
4. Embellishment Cost
|
Process |
Cost per Piece ($) |
|
Enzyme Wash |
0.30 |
|
Chest Print |
0.25 |
|
Total |
0.55 |
5. Overhead & Support Cost
|
Component |
Cost per Piece ($) |
|
Sampling & Development |
0.05 |
|
Compliance & Audit |
0.04 |
|
Marketing & Sales |
0.06 |
|
Safety & Regulatory |
0.05 |
|
Total Overhead Cost |
0.20 |
6. Total Cost Before Profit
|
Cost Element |
Value ($) |
|
BOM Cost |
2.19 |
|
Labor Cost |
0.72 |
|
Operational Cost |
0.26 |
|
Embellishment Cost |
0.55 |
|
Overhead Cost |
0.20 |
|
Total Cost |
3.92 |
7. Profit Margin
Assume Profit = 15%
Profit = 3.92 × 15% = 0.59 USD
8. Final Garment Price
|
Description |
Value ($) |
|
Total Cost |
3.92 |
|
Profit |
0.59 |
|
FOB Price / Piece |
4.51 USD |
Final Formula Summary
Cost per Piece = BOM Cost + Labor Cost + Operational Cost + Embellishment Cost + Overhead + Profit
= 2.19 + 0.72 + 0.26 + 0.55 + 0.20 + 0.59
= 4.51 USD / piece
Notes (Industrial Engineering Perspective)
- Fabric contributes ~56% of total cost → major cost driver
- Labor efficiency (SMV reduction) directly improves margin
- Embellishment significantly increases product value
- Overhead control is key for competitive pricing
Garment Factory CPM Calculation Example
This is a realistic sample monthly factory cost sheet used
to calculate CPM (Cost Per Minute) in garment factories. Figures are
illustrative but aligned with real factory structures.
Factory Profile (Example)
- Factory Type: Knit Garment Factory
- Sewing Operators: 500
- Sewing Lines: 10
- Working Days / Month: 26
- Working Hours / Day: 10
- Average Efficiency: 65%
- Currency: USD
Section 1: Direct Labor Cost (Monthly)
|
Cost Element |
No. of Staff |
Cost / Person |
Monthly Cost (USD) |
|
Sewing Operators |
500 |
180 |
90,000 |
|
Helpers |
120 |
140 |
16,800 |
|
Line Supervisors |
20 |
350 |
7,000 |
|
Line Quality Inspectors |
30 |
250 |
7,500 |
|
Total Direct Labor Cost |
121,300 |
Section 2: Operational cost (Monthly)
Indirect labor cost:
|
Cost Element |
No. |
Cost / Person |
Monthly Cost |
|
Maintenance Staff |
15 |
300 |
4,500 |
|
Store & Material Handlers |
25 |
220 |
5,500 |
|
IE & Planning Team |
8 |
600 |
4,800 |
|
HR & Compliance |
6 |
450 |
2,700 |
|
Total Indirect Labor Cost |
17,500 |
Factory power & infrastructure Cost (Monthly)
|
cost items |
Monthly Cost (USD) |
|
Factory Rent / Lease |
25,000 |
|
Electricity & Utilities |
18,000 |
|
Machinery Depreciation |
12,000 |
|
Maintenance & Spare Parts |
8,000 |
|
Compliance & Safety |
5,000 |
|
Factory Insurance |
2,500 |
|
IT & Software Licenses |
3,000 |
|
Total Factory Overhead |
73,500 |
Administrative & Support Cost
|
Cost Element |
Monthly Cost (USD) |
|
Factory Management Salaries |
15,000 |
|
Finance & Accounts |
6,000 |
|
Security & Housekeeping |
4,500 |
|
Training & Skill Development |
3,000 |
|
Total Admin Cost |
28,500 |
Total Direct labor & operational cost
|
Cost Category |
Monthly Cost (USD) |
|
Direct Labor |
121,300 |
|
Indirect Labor |
17,500 |
|
Power & Infra |
73,500 |
|
Admin & Support |
28,500 |
|
Direct & operational Cost |
240,800 |
Section 5: Available Sewing Minutes (Monthly)
Calculation Logic
Available Minutes =No. of Operators × Working Days × Working Hours × 60 × Efficiency
Calculation
= 500 × 26 × 10 × 60 × 65%= 5,070,000 minutes
Section 6: CPM (Cost Per Minute) Calculation
CPM = Total Direct Labor & Operational Cost ÷ Available Minutes
CPM = 240,800 ÷ 5,070,000CPM = 0.0475 USD / minute
Section 7: How This CPM Is Used in Costing
Example:
- Style SMV = 9.5
Labor Cost / pc = SMV × CPM= 9.5 × 0.0475= 0.45 USD / pc
Planning & Costing Notes
Costing in garment manufacturing isn’t something you set once and forget. It’s more of a living thing—it needs attention, tweaks and sometimes a full rethink as conditions shift.
CPM and efficiency assumptions? They shouldn’t come from theory or what should happen. They need to reflect what’s actually going on inside the plant. Real output. Real constraints. Real performance. Because production environments change—costs go up, productivity moves, things rarely stay still for long.
That’s why regular review matters a lot.
Take CPM (Cost Per Minute), for example. It shouldn’t sit untouched for months on end. Ideally, it gets reviewed every quarter. Sometimes even sooner if things move fast. Wages change. Utility bills creep up. Productivity improves—or drops. All of that feeds directly into CPM.
And efficiency? Same story. If you’re using ideal numbers instead of shop floor reality, you’re already off track. It might look good on paper, but it won’t hold up in production.
Big cost shifts—like increases in labor wages, electricity or factory overhead—are a clear signal. CPM needs recalculating. No shortcuts here. Ignore it and you’re basically guessing your costs… and that’s where problems start. Wrong costing leads to surprises. And not the good kind.
Planning insights
- CPM should be reviewed on a regular cycle—quarterly is a good baseline
- Efficiency assumptions must mirror actual production performance, not ideal numbers
- Major cost changes (wages, electricity, rent, etc.) should trigger a CPM revision
- Accurate CPM helps keep costing predictable
- Incorrect CPM brings uncertainty, profit leakage and financial risk
In conclusion
Garment costing isn’t just about setting a price for the buyer. It’s much bigger than that. It’s a core risk management tool for the factory.
When costing is accurate, factories get a clear view of their true cost structure. They can spot risks early, adjust and stay profitable over time—not just for one order, but consistently.
The factories that do this well usually don’t work in silos. They bring together CPM-based costing with inputs from IE, production and finance. That mix matters. It keeps assumptions grounded and realistic, aligned with what the factory can actually deliver.
And really, it boils down to this:
Accurate costing doesn’t make a product expensive. It makes the business stable.
Get the costing right and things become clearer—profits are more predictable, risks stay under control and growth feels a lot more achievable.
