Key Methods for Pricing Material Issues in Cost Accounting

A warehouse rarely holds material bought at just one price. A trader buying cotton yarn in January, March and June ends up with three lots sitting side by side, each purchased at a different rate. When the storekeeper issues yarn to production the next month, which price should go on the requisition slip: the oldest, the newest, or something in between? This is the exact problem that pricing of material issues solves in cost accounting, and the method chosen has a direct bearing on production cost, reported profit, and the value of closing stock.

Why the choice of method actually matters 🔗

Materials are usually fungible once they reach the store. A kilogram of steel bought in April looks identical to one bought in July, so once they are mixed, there is no physical way to tell them apart. Yet their purchase prices are rarely the same, especially in a country where input costs shift with monsoon output, crude oil prices, and currency movements. Cost accountants therefore rely on a set of accepted pricing conventions rather than guesswork. The method used changes the cost of goods produced, the profit reported for a period, and the value of inventory shown on the balance sheet, which is why accounting standards insist that once a business picks a method, it must apply it consistently, disclosing any change formally rather than switching year to year.

Five methods dominate the discussion in most Indian commerce courses: First-in-first-out (FIFO), Last-in-first-out (LIFO), Weighted average price, Replacement price, and Standard price. Each rests on a different assumption about which lot gets “used up” first, and each suits a different kind of business.

To compare them meaningfully, consider a small worked example that we will return to through this post. A manufacturer buys fabric in three lots: 100 metres at ₹200 per metre, then 150 metres at ₹220, then 200 metres at ₹240. The store now holds 450 metres worth ₹1,01,000 in total. Production then requisitions 180 metres. How that issue gets priced depends entirely on the method in use.

First-in-first-out (FIFO) 🔗

How it works 🔗

FIFO assumes that materials received first are issued first. So the issue is priced using the cost of the oldest lot in stock, and once that lot is exhausted, the next-oldest lot is used, and so on. In our example, the 180 metres issued would consume the entire first lot of 100 metres at ₹200, plus 80 metres from the second lot at ₹220. That works out to ₹20,000 plus ₹17,600, or ₹37,600 in total, an average of roughly ₹208.9 per metre.

Where FIFO fits and where it struggles 🔗

FIFO mirrors how most businesses actually handle physical stock, particularly for perishable or fast-moving goods, which makes it intuitive for storekeepers to follow. It also means closing stock is valued closer to current replacement cost, since the oldest and cheapest units are the ones charged out first. The drawback shows up during inflation: because older, cheaper stock is charged to production, reported profit tends to look higher than it should, and the business may end up paying more tax on what is really just a paper gain rather than genuine profitability. In India, FIFO is one of only two cost formulas allowed for financial reporting, alongside weighted average, under both Ind AS 2 and the older AS 2 standard, and it is also accepted under the Income Computation and Disclosure Standards for tax computation.

Last-in-first-out (LIFO) 🔗

How it works 🔗

LIFO takes the opposite view: the most recently purchased materials are issued first, and the oldest lots remain in the store the longest. Using the same fabric example, the 180 metres issued would first draw from the newest lot of 200 metres priced at ₹240, so the entire issue is charged at ₹240 per metre, totalling ₹43,200. Notice how much higher this is than the FIFO figure for the identical 180 metres of physical fabric.

Why LIFO has largely fallen out of favour 🔗

LIFO’s logic is that current production should be charged at close to current prices, which matches costs to revenue more realistically during inflation and tends to report lower, more conservative profit. That conservatism, however, is exactly why global accounting standards have moved away from it. International Financial Reporting Standards prohibit LIFO because it does not reflect the actual physical flow of most inventories, and Indian standards, which are converged with IFRS, follow the same rule. As a result, LIFO survives mainly as a teaching example in Indian commerce syllabi and remains permitted under US GAAP, but it cannot be used for statutory reporting or tax purposes by Indian companies today.

Weighted average price method 🔗

The weighted average method sidesteps the FIFO-versus-LIFO debate entirely by pooling all the material together. Every time a fresh purchase comes in, a new average price is calculated by dividing the total value of stock on hand by the total quantity on hand, and every subsequent issue is charged at that single average rate until the next purchase changes it again. This approach gives more accurate results than a simple average because it factors in both the quantity and the price of each lot, rather than treating a purchase of 10 units the same as a purchase of 1,000.

Back to the fabric example: total stock value is ₹1,01,000 for 450 metres, so the weighted average works out to roughly ₹224.4 per metre. The 180 metres issued would therefore be valued at about ₹40,400. This figure sits neatly between the FIFO and LIFO results, which is exactly the point of the method: it smooths out the effect of price swings on reported cost, making job costs easier to compare across periods. The trade-off is that closing stock no longer reflects any single actual purchase price, and recalculating the average after every purchase can get tedious when a business handles frequent, high-volume buying.

Replacement price method 🔗

Replacement price, sometimes called market price, charges the material issue at what it would cost to buy that material today, regardless of what was actually paid for it originally. If our fabric currently costs ₹250 per metre in the market, the 180 metres issued would be valued at ₹45,000, even though none of the fabric in stock was bought at that price.

This method is useful when a business wants production costs to reflect current economic reality rather than historical purchase prices, which matters most for companies operating in volatile commodity markets, such as those dealing in metals, edible oils, or imported components where prices can move sharply within a single quarter. The obvious limitation is that it can create a mismatch with the actual cost figures recorded in the books, since the value charged to production may not match either the purchase price or the eventual stock valuation on the balance sheet.

Standard price method 🔗

Standard price works differently from the other four because it is set in advance rather than derived from actual purchase transactions. A predetermined rate is fixed for a stated period, after considering anticipated market trends, transport costs, and expected purchase quantities, and every issue during that period is priced at this fixed rate, irrespective of what was actually paid for the material. According to the Institute of Chartered Accountants of India’s guidance on cost accounting records, any gap between the standard price and the actual purchase price is captured separately as a material price variance, which is then treated as part of the material cost for reporting purposes.

The appeal of standard pricing is administrative simplicity: storekeepers do not need to track which lot an issue came from, requisitions are valued instantly, and management gets a stable benchmark to measure actual performance against. Standard costing systems built around this method also make variance analysis possible, letting a business isolate exactly how much of a cost overrun came from paying more than expected versus using more material than expected. The catch is that standards need regular review; if market prices drift too far from the fixed standard, the variances become large and the reported figures lose their usefulness as a control tool.

Comparing the five methods 🔗

Applying all five methods to the same 180-metre issue from our example makes the differences concrete:

Five methods, five different figures, all describing the same 180 metres of physical fabric. That gap is exactly why the choice of pricing method is not a mechanical bookkeeping decision but one that shapes how a company’s costs and profits look on paper.

Which method should a business actually use? 🔗

There is no universally “correct” answer; the right method depends on the business context.

• Price volatility: If material prices swing sharply, weighted average or standard price tends to give more stable, comparable figures across periods than FIFO or LIFO.
• Regulatory constraints: For companies preparing statutory financial statements in India, the choice is effectively narrowed to FIFO or weighted average, since Ind AS 2, AS 2, and the tax-related ICDS-II standard do not permit LIFO.
• Nature of the material: Homogeneous, mixed materials such as liquids, grains, or bulk chemicals suit weighted average, while distinguishable batches suit FIFO or LIFO more naturally.
• Management’s need for control: Businesses that want tight budgetary control and variance tracking, particularly larger manufacturers, often prefer standard pricing despite the extra administrative work of setting and revising standards.

Whatever method a business picks, cost accounting rules require it to stay consistent from one period to the next unless there is a genuine, disclosed reason to change. That consistency is what allows anyone reading the financial statements, from an auditor to an investor, to compare one year’s performance against another without the numbers being distorted by a silent change in accounting policy.

What do you think? If you were setting up the costing system for a small manufacturing unit dealing in a commodity with sharply fluctuating prices, which method would you lean towards, and why? And given that LIFO produces the most conservative profit figure during inflation, do you think Indian accounting standards are right to exclude it entirely from financial reporting?

References

1. https://tallysolutions.com/inventory/fifo-method-in-inventory-valuation-with-a-practical-example/
2. https://kpmg.com/us/en/articles/2026/inventory-accounting-ifrs-accounting-standards-vs-us-gaap.html
3. https://www.jmc.edu/econtent/ug/2395_METHODS%20OF%20PRICING%20MATERIAL%20ISSUES%20(1).pdf
4. https://www.voiceofca.in/siteadmin/document/ICAI_GUIDANCENOTEONMAINTENANCEOFCOSTACCOUNTINGRECORDS.pdf
5. https://resource.cdn.icai.org/87802bos-aps2161-ch13.pdf