Inventory Valuation Methods Software 2026

What Is Inventory Valuation?

Inventory valuation is how you assign a dollar cost to the stock you sell and the stock you still hold. The method you choose changes your Cost of Goods Sold, gross margin, and ending inventory value on the balance sheet especially when purchase costs change over time, and those numbers feed directly into your financial and inventory reports. For a detailed, side-by-side breakdown of the two most debated methods, see FIFO vs LIFO, then try the inventory valuation calculator to compare FIFO, LIFO, and weighted average on your own numbers.

The Three Main Valuation Methods

FIFO

First In, First Out assumes the oldest stock is sold first. Matches physical flow for most businesses and is required under IFRS. See FIFO vs LIFO for the full comparison.

LIFO

Last In, First Out assumes the newest stock is sold first. Can reduce taxable income when costs rise, but is only permitted under US GAAP.

Weighted Average

Spreads total inventory cost evenly across all units, smoothing out price swings between purchases.

Valuation Features

Automatic COGS Calculation

Cost of Goods Sold is calculated automatically as stock sells, based on your chosen valuation method.

FIFO, LIFO & Weighted Average

Choose the valuation method that fits your accounting needs and cost environment.

Cost Trend Tracking

See how rising or falling supplier costs are affecting your margins over time, by product.

Valuation Reporting

Export inventory valuation reports your accountant can use directly for financial statements.

Benefits of Accurate Valuation

Know your true Cost of Goods Sold without manual spreadsheet calculations

Choose the valuation method that matches your accounting standard

See accurate gross margin as supplier costs change

Stay compliant with IFRS (FIFO/weighted average) or US GAAP (FIFO/LIFO/weighted average)

Reduce write-offs by pairing valuation with FEFO picking on perishables

Export valuation data ready for year-end financial statements

Track cost trends per product to catch margin erosion early

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Frequently asked questions

What is inventory valuation?

Inventory valuation is the method used to assign a cost to the stock you hold and to the goods you sell, which determines your Cost of Goods Sold (COGS) and ending inventory value on the balance sheet. The three most common methods are FIFO, LIFO, and weighted average cost.

What are the main inventory valuation methods?

FIFO (First In, First Out) assumes the oldest stock is sold first. LIFO (Last In, First Out) assumes the newest stock is sold first. Weighted average cost spreads the total cost of inventory evenly across all units, smoothing out price fluctuations. See FIFO vs LIFO for a detailed comparison of the first two.

Which inventory valuation method should a small business use?

Most small businesses use FIFO or weighted average because they are simpler to apply, accepted under both IFRS and US GAAP, and tend to match the physical flow of stock (oldest units sold or used first). LIFO is only permitted under US GAAP and is mainly used by larger businesses managing tax strategy in rising-cost environments.

How does weighted average cost work?

Weighted average cost divides the total cost of all inventory on hand by the total number of units, producing a single average cost per unit. As new stock comes in at different prices, the average recalculates. It's useful for businesses with frequent purchases of similar items where individual batch costs are hard to distinguish.

Does my inventory valuation method need to match my physical picking method?

No they are separate concepts. You can use FIFO for accounting purposes while physically picking stock in a different order, though most businesses align the two for simplicity, especially when batch tracking and expiry date tracking are already enforcing first-expired-first-out picking on the warehouse floor. See FIFO, LIFO & FEFO for the warehouse rotation side of this question.

Can I switch inventory valuation methods later?

Switching methods is possible but requires care: under US GAAP it requires IRS approval, and under IFRS it requires retrospective adjustment of financial statements. Always consult an accountant before changing valuation methods, since it affects reported profit, tax liability, and comparability with prior periods.

Inventory Valuation Methods