Odoo Inventory Valuation: FIFO, AVCO and Standard Cost Explained
Inventory valuation is one of the most important parts of inventory and accounting management. Businesses need to know not only how many products they have in stock, but also how much that inventory is worth.
When purchase prices change over time, the same product may enter the warehouse at different costs. This creates an important question:
Which cost should be used when calculating the value of inventory and the cost of goods sold?
Odoo provides several inventory valuation methods, including FIFO (First In, First Out), AVCO (Average Cost), and Standard Cost.
Choosing the right method can affect inventory value, cost of goods sold, gross profit, and financial reporting.
In this guide, we'll explain how these three valuation methods work and when businesses should consider using each one.
What Is Inventory Valuation?
Inventory valuation is the process of assigning a monetary value to products held in inventory.
For example, suppose a company purchases:
- 100 units at ₹100 each
- 100 units at ₹120 each
The warehouse now contains 200 units, but the cost of those units isn't necessarily ₹100 or ₹120.
The inventory valuation method determines how Odoo calculates the cost of:
- Remaining inventory
- Products sold
- Cost of Goods Sold (COGS)
- Inventory-related accounting entries
This makes inventory valuation an important part of both operations and accounting.
Why Inventory Valuation Matters
Accurate inventory valuation helps businesses understand:
Inventory Value
How much capital is currently tied up in stock?
Cost of Goods Sold
How much did the products sold actually cost?
Gross Profit
How much profit remains after accounting for product costs?
Financial Reporting
Are inventory assets and expenses represented correctly in financial statements?
Purchasing Decisions
Are supplier price increases affecting profitability?
Odoo Inventory Valuation Methods
The three commonly discussed costing methods are:
- FIFO – First In, First Out
- AVCO – Average Cost
- Standard Cost
Each method treats changing purchase prices differently.
Let's understand them with practical examples.
1. FIFO – First In, First Out
FIFO stands for First In, First Out.
The basic principle is that the products purchased first are considered to be sold first.
For example:
| Purchase | Quantity | Cost |
|---|---|---|
| First purchase | 100 units | ₹100 |
| Second purchase | 100 units | ₹120 |
Total inventory:
200 units
Now suppose the company sells 120 units.
Under FIFO:
- First 100 units → ₹100
- Next 20 units → ₹120
Therefore:
COGS = (100 × ₹100) + (20 × ₹120)
COGS = ₹10,000 + ₹2,400 = ₹12,400
The remaining inventory is:
80 units × ₹120 = ₹9,600
How FIFO Works in Odoo
With FIFO, Odoo tracks inventory layers based on incoming costs.
Older inventory layers are consumed before newer layers.
This means the cost assigned to outgoing products depends on the cost of the earlier incoming inventory.
FIFO can therefore be particularly useful when businesses want inventory costing to broadly follow the physical movement of goods.
Advantages of FIFO
Better for Perishable Products
FIFO is intuitive for products where older stock should physically be sold first.
Examples include:
- Food
- Pharmaceuticals
- Cosmetics
- Chemicals
Reflects Older Purchase Costs in COGS
When prices increase, FIFO generally assigns older, lower costs to products sold first.
Remaining Inventory May Reflect More Recent Costs
The inventory left in stock tends to be associated with newer purchase costs.
Example of FIFO During Inflation
Suppose a company purchases:
January: 100 units × ₹100 = ₹10,000
March: 100 units × ₹150 = ₹15,000
The company sells 120 units.
FIFO calculates:
100 × ₹100 = ₹10,000
20 × ₹150 = ₹3,000
Total COGS:
₹13,000
Remaining inventory:
80 × ₹150 = ₹12,000
When purchase prices are increasing, FIFO can therefore produce a lower COGS compared with methods that use newer or average costs, depending on the circumstances.
2. AVCO – Average Cost
AVCO stands for Average Cost or Average Costing.
Instead of assigning different costs to individual inventory layers, the product is valued using an average cost.
This average changes as new inventory is received at different prices.
How AVCO Works
Suppose a company purchases:
100 units × ₹100 = ₹10,000
Then purchases:
100 units × ₹120 = ₹12,000
Total:
200 units
Total value:
₹22,000
Average cost:
₹22,000 ÷ 200 = ₹110 per unit
So the inventory's average cost becomes:
₹110/unit
If the company sells 50 units:
50 × ₹110 = ₹5,500
The remaining inventory is:
150 × ₹110 = ₹16,500
What Happens When New Stock Arrives?
Suppose the company later purchases:
100 units at ₹140
Existing inventory:
150 units × ₹110 = ₹16,500
New purchase:
100 × ₹140 = ₹14,000
Total:
250 units
Total value:
₹30,500
New average cost:
₹30,500 ÷ 250 = ₹122/unit
The average cost has therefore increased from:
₹110 → ₹122
This provides a smoother valuation when purchase prices fluctuate.
Advantages of AVCO
Smooths Price Fluctuations
Instead of immediately applying the latest purchase price, AVCO averages costs across inventory.
Simple for Many Businesses
It can be easier to manage when products are interchangeable.
Useful for High-Volume Products
AVCO can be practical for businesses purchasing large quantities of similar products at changing prices.
Common examples include:
- Raw materials
- Industrial components
- Packaging materials
- Commodities
3. Standard Cost
Standard Cost uses a predefined cost for a product.
Instead of continuously changing the inventory cost based on actual purchase prices, the company defines a standard cost.
For example:
Product: Steel Bracket
Standard Cost: ₹500/unit
Even if the company purchases the product at:
- ₹480
- ₹510
- ₹525
the standard cost remains:
₹500
until the company updates it.
Why Use Standard Cost?
Standard costing is often useful for businesses that want to compare:
Expected Cost vs. Actual Cost
For example:
Standard Cost: ₹500
Actual Purchase Cost: ₹530
Difference:
₹30 unfavorable variance
This can help management analyze purchasing performance and cost changes.
Standard Cost and Manufacturing
Standard costing can be particularly useful in manufacturing environments.
A company may establish standard costs for:
- Raw materials
- Labor
- Manufacturing overhead
- Components
For example:
| Cost Component | Standard Cost |
|---|---|
| Raw Material | ₹600 |
| Labor | ₹200 |
| Overhead | ₹100 |
| Total | ₹900 |
The company can then compare actual manufacturing costs against the standard.
FIFO vs AVCO vs Standard Cost
Here's a simplified comparison:
| Feature | FIFO | AVCO | Standard Cost |
|---|---|---|---|
| Cost basis | Older inventory layers first | Average cost | Predefined cost |
| Cost changes | Based on inventory layers | Changes with purchases | Changes when standard is updated |
| Tracks purchase-price changes | Yes | Yes, averaged | Not directly |
| Useful for | Perishable/traceable inventory | Similar interchangeable products | Cost control/manufacturing |
| Cost calculation | Layer-based | Average-based | Fixed standard |
| Cost variance visibility | Limited | Limited | Strong |
Practical Example: Comparing All Three
Suppose a company purchases:
100 units at ₹100
Then:
100 units at ₹150
Total inventory:
200 units
The company sells:
100 units
FIFO
The first 100 units are valued at ₹100.
COGS = ₹10,000
Remaining inventory:
100 × ₹150 = ₹15,000
AVCO
Average cost:
(₹10,000 + ₹15,000) ÷ 200
= ₹125/unit
COGS:
100 × ₹125 = ₹12,500
Remaining inventory:
100 × ₹125 = ₹12,500
Standard Cost
Suppose standard cost is:
₹120/unit
COGS:
100 × ₹120 = ₹12,000
Remaining inventory:
100 × ₹120 = ₹12,000
The actual accounting impact depends on the company's configuration and accounting setup.
How to Choose the Right Method
There isn't one inventory valuation method that is best for every business.
The right choice depends on:
- Product characteristics
- Purchase price volatility
- Inventory turnover
- Manufacturing processes
- Accounting policies
- Industry requirements
- Local accounting regulations
- Management reporting requirements
FIFO May Be Suitable When:
- Products have a physical first-in-first-out flow.
- Products are perishable.
- Purchase prices change significantly.
- The business wants newer costs to remain in ending inventory.
AVCO May Be Suitable When:
- Products are interchangeable.
- Purchase prices fluctuate.
- The business wants to smooth cost changes.
- Large volumes of similar products are purchased.
Standard Cost May Be Suitable When:
- The business uses standard costing.
- Manufacturing cost control is important.
- Management wants to analyze cost variances.
- Products have predictable standard costs.
Inventory Valuation and Accounting
Inventory valuation isn't only an inventory-management issue.
It directly affects accounting.
For example:
Inventory Value
↓
Cost of Goods Sold
↓
Gross Profit
↓
Financial Statements
When inventory costing changes, the reported cost of products sold and remaining inventory can also change.
Therefore, businesses should configure inventory valuation carefully and ensure the approach is consistent with their accounting policies.
Automated vs Manual Inventory Valuation
Odoo also supports different approaches to inventory valuation depending on the configuration.
Manual Valuation
Inventory value may be managed through accounting entries or periodic valuation processes.
Automated Valuation
Inventory movements can generate accounting entries based on the configured valuation settings.
Automated valuation can provide closer integration between:
Inventory → Stock Movements → Valuation → Accounting
This can reduce the need for manual reconciliation.
Product Categories and Inventory Valuation
Inventory valuation settings are typically managed at the product category level in Odoo.
This makes it easier to apply consistent valuation settings across groups of products.
For example:
Raw Materials
Costing: AVCO
Finished Goods
Costing: FIFO
Manufactured Components
Costing: Standard Cost
The actual configuration should be determined based on the company's accounting requirements and Odoo version.
Inventory Valuation for Manufacturing Businesses
Manufacturing businesses often have more complex costing requirements.
A finished product may include:
- Raw materials
- Components
- Labor
- Manufacturing operations
- Work center costs
- Overhead
For example:
Raw Materials: ₹600
Labor: ₹200
Overhead: ₹100
Total Manufacturing Cost: ₹900
Choosing an appropriate costing and valuation strategy helps management understand the cost of finished goods and profitability.
Inventory Valuation and Purchasing
Purchase price changes can have a significant impact on inventory valuation.
Suppose the price of a raw material increases from:
₹100 → ₹125 → ₹150
The impact will differ depending on whether the company uses:
- FIFO
- AVCO
- Standard Cost
Purchasing teams should therefore understand how supplier price changes affect inventory and profitability.
Inventory Valuation and Sales Profitability
Consider a product sold for:
₹1,000
If the cost is:
₹600
Gross margin:
₹400
But if the inventory costing method results in a cost of:
₹700
Gross margin becomes:
₹300
Therefore, inventory valuation can influence management's understanding of product profitability.
Common Inventory Valuation Mistakes
1. Choosing a Method Without Considering Accounting Policies
The costing method should align with the company's accounting requirements.
2. Changing Costing Methods Without Planning
Changing valuation methods can have accounting and reporting consequences.
3. Ignoring Product Categories
Different product groups may have different operational requirements.
4. Not Reconciling Inventory and Accounting
Inventory valuation should be regularly checked against accounting records.
5. Using Incorrect Product Costs
Incorrect purchase prices, units of measure, or product configurations can lead to inaccurate valuation.
Best Practices for Odoo Inventory Valuation
1. Understand Your Inventory
Identify whether your products are:
- Perishable
- Interchangeable
- Manufactured
- High-value
- Low-value
- Price-sensitive
2. Define a Clear Costing Policy
Choose a consistent valuation approach based on your business and accounting requirements.
3. Configure Product Categories Carefully
Apply appropriate costing and valuation settings to the relevant product categories.
4. Monitor Purchase Price Changes
Regularly analyze supplier price movements.
5. Reconcile Inventory with Accounting
Make inventory valuation reconciliation part of your financial control process.
6. Test Before Going Live
Before implementing automated inventory valuation, test:
- Receipts
- Deliveries
- Returns
- Purchase price changes
- Inventory adjustments
- Manufacturing
- Vendor bills
- Customer invoices
Which Method Is Best for Your Business?
A simple decision framework can help.
Do your products have a natural first-in-first-out flow?
→ Consider FIFO
Are products interchangeable and purchased at changing prices?
→ Consider AVCO
Do you need predefined costs and detailed variance analysis?
→ Consider Standard Cost
However, businesses should always validate the selected method against their accounting policies and applicable regulations before implementation.
Conclusion
Odoo Inventory Valuation provides businesses with different ways to calculate and manage product costs.
FIFO focuses on inventory layers and the assumption that older costs are consumed first.
AVCO calculates an average cost as inventory is purchased at different prices.
Standard Cost uses a predefined product cost and can be particularly useful for cost control and variance analysis.
Choosing the right method can help businesses achieve better:
- Inventory accuracy
- Cost visibility
- Profitability analysis
- Financial reporting
- Purchasing control
- Manufacturing cost management
For businesses implementing Odoo, inventory valuation should be designed together with inventory, purchasing, manufacturing, and accounting workflows rather than treated as an isolated configuration.