What Is Inventory? Meaning, Types, Examples, and Accounting

Inventory is the stock a business holds to sell or to use in making or delivering what it sells. For a product business it is often one of the largest assets on the books and the one that changes every day.

This guide explains what inventory means, the main types with examples, how it shows up in your accounts, and how to tell whether you are holding too much or too little.

At a glance

• Inventory is goods held for sale, goods being made for sale, and the materials and supplies used to make them.

• The word also means a list or count of goods, as in "take inventory."

• On the balance sheet it is a current asset, valued at cost, or less if it has lost value.

• Turnover and days inventory outstanding show whether stock is moving.

What is inventory?  

Inventory covers everything a business holds to sell or to turn into what it sells: finished goods, goods bought for resale, raw materials, work in progress, and the supplies used up along the way. It does not include the equipment, vehicles, and buildings the business uses to operate. Those are assets, but they are not for sale.

The test is the purpose of the item, not the item itself. If the business holds it to sell or to use up in making something it sells, it is inventory.

Illustrative example: A newspaper vendor uses a van to deliver newspapers to customers. Only the newspapers are in inventory. The van is an asset the vendor uses to run the business, so it is recorded as equipment, not stock.

What does inventory mean?  

Inventory has two meanings. Most often it means the goods themselves: the stock a business holds. It also means a detailed list or count of those goods, as in "take inventory" or "an inventory of office equipment." The word comes from the Latin invenire, to find; a list of what is found.

The two senses meet in a stock count. When you take inventory, you check the list against the goods.

Inventory meaning in Indian languages  

The table gives the common word for inventory in each language, one example sentence, and the word businesses usually use day to day.

How does inventory differ by type of business?  

What counts as inventory depends on what the business does. A retailer or distributor holds goods bought to resell. A manufacturer holds raw materials, work in progress, and finished goods. A service business holds the supplies it uses or sells, but not its time or unused capacity.

Trading businesses

Retailers, wholesalers, and distributors resell finished goods without changing them, so they hold no raw materials.

Manufacturing businesses

Inventory covers every stage of production. 

Illustrative example: for a cookie manufacturer, inventory includes the packets of cookies ready to sell, the cookies set aside for quality checks, the baked cookies not yet cooled or packed, and raw materials such as sugar, milk, and flour.

Service businesses 

Illustrative example: A hotel cannot store tonight's empty room and sell it next week. Operations teams sometimes call that unsold capacity "service inventory," but it is not inventory in the accounting sense, and it never appears on the balance sheet.

What a service business does record as inventory is physical: the toiletries, linen and food a hotel stocks, or the parts a repair shop keeps to fit.

What are the types of inventory?  

Inventory is usually grouped in four ways: 

• By stage of production (raw materials, work in progress, finished goods)

• Goods bought for resale (merchandise)

• Stock that supports operations (maintenance supplies and packing materials),

• Stock held for a purpose (buffer, cycle, decoupling, anticipation, and transit inventory).

Illustrative example: The cookie manufacturer from the section above runs through every type below.

1. By stage of production: Raw materials, WIP, and finished goods  

These three are the main categories a manufacturer records in its financial accounts.

Raw materials 

The items processed to make the final product. For the cookie maker, these are milk, sugar, and flour, bought from suppliers. Raw materials can also come from inside the process.

A sugar mill buys sugarcane from farmers and crushes it for juice. The leftover fiber, called bagasse, is burned as fuel. The cane, the juice, and the bagasse are all raw materials.

Work in progress (WIP) 

Stock that has entered production but is not yet a finished good. The cookie maker's molded and baked cookies waiting for their quality check are WIP.

Finished goods 

The items passed every stage of production and quality checking and are ready to sell. For the cookie maker, these are the sealed packets sent to stores.

2. Goods bought for resale: merchandise inventory  

Merchandise inventory is finished goods a business buys to resell without changing them. A supermarket's packaged cookies, a distributor's cartons of phone chargers, and an online store's shoes are all merchandise inventory. Most retailers and wholesalers hold only this type, plus packing materials.

3. Stock that supports operations: MRO and packing materials  

Maintenance, repair, and operating (MRO) supplies

The inventory keeps machines, tools, and equipment running. Examples include lubricants, coolants, gloves, uniforms, nuts, bolts, and screws. They matter most in manufacturing.

How MRO supplies are recorded depends on their size and the business's policy. Small consumables such as gloves and lubricant are often expensed when bought. Larger stocks of spare parts are usually held as inventory, shown in India as "stores and spares," until they are used. Major spare parts that will last more than a year can instead be treated as equipment.

Packing materials 

Cartons, labels, and wrappers that are used to pack or ship goods. The cookie maker's printed wrappers and shipping cartons are inventory until they are used.

4. Stock held for a purpose: buffer, cycle, decoupling, anticipation, and transit  

Buffer inventory 

Also called safety stock, it is extra stock held to absorb shocks such as a sudden spike in demand, a late delivery, or a labor strike. It keeps a surprise from turning into a stockout.

Cycle inventory 

Stock ordered regularly in set lot sizes to meet normal demand between deliveries. It is usually material used directly in production or in a routine process.

Decoupling inventory 

Stock kept between two steps of production, so that one machine's breakdown does not stop the next. The cookie maker keeps some extra molded dough ready for the oven. If a molding machine fails, baking carries on while it is repaired.

Anticipation inventory 

Stock built up ahead of a known rise in demand or a price increase. The cookie maker doubles its flour stock in September ahead of festival-season orders.

Transit inventory 

Stock moving from one location to another, such as raw materials on a train to the factory or finished goods on a truck to a store.

One item, more than one type  

The same item can be a different type of inventory depending on who holds it. Flour is a finished good for the flour mill and a raw material for the cookie maker. The cookie maker's packaged cookies are finished goods in its books and merchandise inventory in the books of the supermarket that buys them.

Why do businesses hold inventory?  

Businesses hold inventory because demand and supply rarely line up. Stock on hand lets you sell without waiting on a supplier, cover seasonal peaks, absorb late deliveries or sudden orders, buy in bulk at a lower unit cost, and keep production running when one step slows down.

Each reason matches a type of inventory:

• Supply arrives in batches; demand arrives daily: Cycle inventory covers normal sales between deliveries.

• Some peaks are known in advance: Anticipation inventory is built before the season starts.

• Some demand and supply are uncertain: Buffer inventory covers the gap when either one surprises you.

• Larger orders can cost less per unit: Bulk buying lowers the unit price, but you hold more stock for longer.

• Production steps run at different speeds: Decoupling inventory stops one slow step from halting the rest.

Holding stock is a trade-off, because every unit carries a cost, covered below. Some businesses deliberately hold very little and receive materials close to when they need them. That approach is called just-in-time (JIT) inventory.

Is inventory an asset? Inventory in accounting  

Yes. Inventory is a current asset because a business expects to sell or use it within a year. It sits on the balance sheet at cost until it is sold. When it sells, that cost moves to the income statement as the cost of goods sold.

Illustrative example: A shop buys and sells water bottles.

Inventory stays at cost only while it is worth at least that much. If the remaining bottles are damaged or can only be sold below cost, their value is written down to what they can realistically be sold for, less the costs of selling them. That amount is called net realizable value, and the loss is recorded as an expense.

How is inventory valued?  

Inventory is valued at cost, using a cost formula that decides which purchase cost each sold unit carries. The common formulas are first in, first out (FIFO), weighted average and specific identification. Last in, first out (LIFO) is allowed under US rules but not under International Financial Reporting Standards (IFRS) or India's Ind AS 2.

Illustrative example: A business buys 100 units at $10, then 100 units at $12, and sells 120 units. Total cost available: $2,200.

The total cost is the same under every formula. What changes is the split between the cost of goods sold, which reduces this period's profit, and closing inventory, which carries into the next period. When prices are rising, FIFO gives the lowest cost of goods sold and LIFO the highest.

What the rules allow:

Specific identification tracks the actual cost of each item, so it suits unique or high-value goods such as cars, jewelry or custom machinery.

How is inventory measured? Turnover and days of inventory  

Two measures do most of the work. Inventory turnover shows how many times a business sells through its average inventory in a year. Days inventory outstanding shows how many days, on average, stock sits before it sells. Both use cost of goods sold, not sales revenue.

Inventory turnover = Cost of goods sold ÷ Average inventory

Average inventory = (Opening inventory + Closing inventory) ÷ 2

Days inventory outstanding = 365 ÷ Inventory turnover

Inventory is recorded at cost, so measuring it against sales revenue would overstate turnover.

Illustrative example: The cookie maker's year.

Higher turnover means stock sells faster and ties up less cash. Very high turnover can also mean stock is running too thin and stockouts are close. Low turnover points to slow movers or excess stock. Compare these figures with the business's own past years rather than a general benchmark, and check them by item, because a fast top seller can hide slow stock elsewhere.

Inventory vs. stock: is there a difference?  

In everyday business use, inventory and stock mean the same thing. Inventory is the more common word in the US, and stock is more common in the UK and India. In some retail settings, stock means only goods ready to sell, while inventory also includes materials and work in progress.

Two related uses are worth knowing:

• Stocktaking: The UK and Indian term for taking inventory, a physical count of the goods on hand.

• Closing stock: The common term in Indian bookkeeping, while Indian company balance sheets label the same line "Inventories".

In finance, stock also means shares in a company. Context usually makes the meaning clear.

What does it cost to hold inventory?  

Holding inventory costs more than its purchase price. The main carrying costs are the money tied up in stock, storage space, insurance, handling, and losses from damage, theft, spoilage or items that stop selling. These costs are why holding too much stock hurts cash flow.

• Capital cost: cash tied up in stock cannot be used elsewhere, and it may have been borrowed.

• Storage: rent, racking, power and warehouse staff.

• Insurance and handling: cover for the stock, and the labor and equipment to move it.

• Shrinkage: losses from damage, theft, spoilage and counting errors.

• Obsolescence: items that expire, go out of fashion or are replaced by a newer model.

Holding too little has costs too; stockouts, lost sales and rush orders at higher prices. The aim is the smallest stock that still meets demand reliably. See what is carrying cost for how to put a number on it.

From inventory to inventory management  

Knowing what inventory is tells you what to track. Inventory management is the work of deciding how much to hold, when to reorder and where to keep it, and of recording every movement so the numbers on the shelf match the numbers in the books.

In practice, that means setting a reorder point for each item, counting stock on a schedule through cycle counting, and checking turnover regularly.

Inventory software such as Zoho Inventory updates stock levels as you receive purchases, make sales and move stock between locations, so the inventory figure in your books stays current between counts.

For the full process, see the inventory management guides.