How to Calculate Raw Materials Available for Use
Accurately determine the total value of raw materials ready for production in your accounting period. Use our professional calculator to streamline your inventory management and COGM analysis.
Formula: (Beginning Inventory) + (Net Purchases)
$25,700.00
83.7%
16.3%
Inventory Composition Chart
Visual breakdown of Beginning Inventory vs. Net Purchases.
What is Raw Materials Available for Use?
In the world of manufacturing accounting, knowing how to calculate raw materials available for use is a fundamental step in determining the Cost of Goods Manufactured (COGM). This metric represents the total dollar value of all raw materials that a company could have potentially used in production during a specific timeframe.
This calculation includes everything sitting in the warehouse at the start of the month (Beginning Inventory) plus every shipment received and accepted throughout that period (Net Purchases). It is essential for production managers and accountants to track this to ensure they have enough supplies to meet demand without over-investing in excess stock.
Who should use this? Small business owners, manufacturing accountants, supply chain managers, and students studying managerial accounting often rely on this formula to gauge production capacity and financial health.
How to Calculate Raw Materials Available for Use: Formula
The mathematical derivation is straightforward, but accuracy depends on tracking several sub-variables. The core logic is to combine what you started with and what you added.
Raw Materials Available for Use = Beginning Inventory + Net Purchases
The Variables Explained
| Variable | Meaning | Typical Range | Impact |
|---|---|---|---|
| Beginning Inventory | Stock carried over from the previous period. | 5% – 20% of monthly use | Increases total available |
| Gross Purchases | Total invoice price of new raw materials. | Variable by scale | Primary driver of availability |
| Freight-In | Shipping, handling, and insurance for incoming goods. | 2% – 10% of purchases | Increases cost basis |
| Returns & Allowances | Damaged goods returned or supplier discounts. | 0% – 3% of purchases | Decreases net purchases |
Practical Examples
Example 1: Precision Tech Electronics
Precision Tech starts January with $50,000 worth of silicon wafers. During the month, they purchase an additional $200,000 in wafers. They pay $5,000 in shipping fees but return $2,000 worth of defective components.
- Beginning Inventory: $50,000
- Net Purchases: ($200,000 + $5,000 – $2,000) = $203,000
- Total Available for Use: $50,000 + $203,000 = $253,000
Example 2: Local Furniture Maker
A boutique woodworker has $2,000 in lumber on July 1st. They buy $10,000 more wood throughout the month with no returns or shipping costs. Their total available for use is simply $12,000. This number tells them that no matter how many chairs they build, they cannot exceed $12,000 in material costs for that month.
How to Use This Calculator
- Enter Beginning Inventory: Locate your balance sheet from the end of the previous period and enter the ending raw materials value here.
- Add Purchases: Total up all your invoices for raw materials purchased in the current period.
- Account for Freight: Include all transportation-in costs, as these must be capitalized into the inventory value.
- Deduct Returns: If you sent any items back or received a “purchase allowance” for sub-standard goods, subtract that value.
- Analyze Results: The calculator will instantly show your “Net Purchases” and the grand total “Raw Materials Available for Use.”
Key Factors Affecting Inventory Availability
- Supply Chain Lead Times: Longer lead times often force companies to maintain a higher beginning inventory, increasing the total available for use.
- Inventory Management Best Practices: Implementing JIT (Just-In-Time) systems reduces the beginning inventory component significantly.
- Raw Materials Inventory Turnover Ratio: A high raw materials inventory turnover ratio suggests that the materials available for use are quickly converted into work-in-process.
- Shipping Rates (Freight-In): Fluctuating fuel prices directly impact the net cost of purchases, even if the base material price remains stable.
- Supplier Reliability: Frequent purchase returns due to poor quality will lower your net purchases and disrupt production schedules.
- Inflation and Taxes: Rising costs increase the dollar value of “Available for Use” even if the physical volume of material stays the same.
Frequently Asked Questions
1. Is “Available for Use” the same as “Materials Used”?
No. “Available for Use” is the maximum amount you could have used. To find “Materials Used,” you must subtract the ending finished goods inventory or ending raw materials from this total.
2. Why include Freight-In in this calculation?
Accounting standards (GAAP) require that all costs necessary to get an asset ready for its intended use be included in its cost. Shipping is necessary to get the material to your factory.
3. What happens if my Returns exceed my Purchases?
While rare, this would indicate a net credit from suppliers. In the calculator, this would result in a very low or negative “Net Purchase” value, which would then be subtracted from your beginning inventory.
4. How often should I calculate this?
Most businesses calculate this monthly as part of their closing process to prepare a cost of goods manufactured calculation.
5. Does this include labor costs?
No. This calculation focuses strictly on “Direct Materials.” Labor and overhead are added later in the work in process inventory guide stages.
6. Can I use units instead of dollars?
Yes. While accounting requires dollar values, production managers often use the same logic to calculate physical units (e.g., tons of steel or liters of chemical) available for use.
7. What is a “Purchase Allowance”?
It is a price reduction granted by a supplier because the goods were slightly damaged or not exactly what was ordered, but the buyer decided to keep them anyway.
8. How does this link to the Balance Sheet?
The “Beginning Inventory” is the “Raw Materials” asset account value from the previous month’s balance sheet.
Related Tools and Internal Resources
- Raw Materials Inventory Turnover Ratio: Measure how efficiently you are using your available materials.
- Direct Materials Used Formula: The next step after calculating what is available.
- Cost of Goods Manufactured Calculation: The full picture of production costs.
- Work in Process Inventory Guide: Track materials as they move onto the factory floor.
- Ending Finished Goods Inventory: Calculate the value of products ready for sale.
- Inventory Management Best Practices: Strategies to optimize your material availability.