Merchandise inventory is the stock of finished goods a retailer or wholesaler holds for resale to customers in the normal course of business. It lives on the balance sheet as a current asset and feeds directly into the cost of goods sold line on the income statement, which makes it one of the most consequential accounts for any business that buys products to resell. Get the count or the valuation wrong and the error travels straight through to reported profit, taxable income, and the financial ratios lenders look at.
What Belongs in the Account, and What Doesn’t
Only finished products your business intends to sell during normal operations qualify. Office furniture, cleaning supplies, and other items used internally are either expensed or classified as fixed assets. Raw materials and partially assembled components belong to manufacturing inventory categories, not merchandise inventory. The distinction matters because overstating this account inflates reported assets and understates expenses at the same time, distorting the financial statements in ways that invite audit trouble.
Goods in Transit
Products moving between a supplier and your warehouse raise an ownership question that turns on the shipping terms. Under FOB Shipping Point (free on board at the seller’s location), you take ownership and risk the moment the carrier picks up the goods. Under FOB Destination, the seller keeps title and bears the risk until the shipment reaches your facility.1Cornell Law School. Uniform Commercial Code 2-319 – FOB and FAS Terms The practical effect at year-end: if your terms are FOB Shipping Point and a truckload is still on the highway, that inventory belongs on your balance sheet even though you’ve never touched it.
Consignment Goods
When a manufacturer places products with a retailer on consignment, the retailer has physical possession but no ownership. The manufacturer keeps the goods on its own balance sheet until the retailer sells them to a customer. If you’re the consignee, products sitting on your shelves under that arrangement don’t belong in your inventory count. Misclassifying consignment goods is a common error and it overstates both assets and eventual cost of goods sold.
What Costs Roll Into the Inventory Value
The number on the balance sheet is not just the price on the supplier’s invoice. Accounting standards require you to capitalize every cost necessary to get the inventory to its current location and condition for sale. This total, sometimes called the landed cost, becomes the basis for cost of goods sold, gross margin, and taxable income.
Costs that typically get folded into the inventory value include:
- Freight-in charges paid to receive the goods.
- Import duties, which vary by product classification under the Harmonized Tariff Schedule.
- Transit insurance premiums paid to protect goods while shipping.
- Non-refundable sales or excise taxes that can’t be recovered from a taxing authority.
Purchase discounts move the value the other way. When a supplier offers terms like “2/10, net 30” and you take the discount, the recorded cost of the inventory comes down accordingly. Whichever bookkeeping method you use, the requirement is consistency from period to period.
Uniform Capitalization for Larger Businesses
Federal tax law under Section 263A requires certain businesses to go beyond the obvious costs and also capitalize a share of indirect expenses (warehouse rent, purchasing department salaries, handling costs) into inventory values. These rules add complexity and typically produce a higher inventory figure, which defers tax deductions until the goods are sold. Small businesses are exempt if their average annual gross receipts over the prior three years fall below a threshold set at $25 million and adjusted each year for inflation.2Office of the Law Revision Counsel. 26 USC 263A – Capitalization and Inclusion in Inventory Costs of Certain Expenses Below that bar, the uniform capitalization rules don’t apply and simpler cost calculations are fine.
How Merchandise Inventory Drives Cost of Goods Sold
The account feeds directly into the most important profitability calculation for any reseller:
Cost of Goods Sold = Beginning Inventory + Purchases – Ending Inventory
Beginning inventory is whatever was on the shelves at the start of the period. Add everything bought during the period. Subtract what’s still on the shelves at the end. What’s left is what it cost you to supply the goods actually sold. Every dollar of error in the ending count travels straight into COGS and from there into reported profit. Overcount ending inventory and you understate COGS, making the period look more profitable than it was. Undercount it and profits look worse than they were. That is why accurate records here are the backbone of reliable financial statements.
Valuation Methods
When you buy the same product at different prices over time, you need a consistent rule for which costs attach to units sold and which stay with ending inventory. U.S. generally accepted accounting principles allow three, and each produces different profit and tax figures from identical transactions.
First-In, First-Out (FIFO)
FIFO assumes the oldest units are the first ones sold. Ending inventory therefore carries the most recent purchase prices. In a period of rising costs, FIFO produces a higher ending inventory value, a lower cost of goods sold, and higher reported profit. This method also tracks how most retailers actually move physical goods, since older stock generally sells before newer arrivals.
Last-In, First-Out (LIFO)
LIFO reverses the assumption: the most recently purchased units are treated as the first sold, and ending inventory carries the oldest, typically lowest, costs. When prices are climbing, LIFO increases cost of goods sold and reduces taxable income, which is exactly why some businesses choose it. The tax savings come with a condition. Federal law requires any business using LIFO for tax purposes to also use LIFO in the financial statements it provides to shareholders, partners, and creditors.3Office of the Law Revision Counsel. 26 USC 472 – Last-in, First-out Inventories This conformity rule blocks the strategy of showing investors a flattering FIFO number while telling the IRS a lower LIFO figure. International Financial Reporting Standards prohibit LIFO entirely, so companies reporting under IFRS don’t have this option.
To elect LIFO, you file IRS Form 970 with the tax return for the first year the method should apply. If that return has already gone in without the election, you can still elect by filing an amended return within 12 months of the original filing date.4IRS. Form 970 – Application To Use LIFO Inventory Method Once elected, LIFO stays in place in all subsequent years unless the IRS approves a change.
Weighted Average Cost
This method blends the cost of every unit available for sale during the period into a single average price. Divide total cost of goods available by total units available, then apply the average to both units sold and units remaining. Weighted average smooths out price swings, which suits businesses handling large volumes of interchangeable products where tracking specific purchase lots isn’t practical.
Consistency Across Periods
U.S. GAAP allows different inventory categories to use different methods, provided the chosen method for each category is applied consistently period to period. Switching methods mid-stream distorts year-over-year comparisons and triggers disclosure requirements. A genuine change typically calls for restating prior periods or disclosing the impact of the change.
Writing Down Inventory That’s Lost Value
Inventory doesn’t always hold its cost. Styles change, products become obsolete, and damage happens. When the amount you can realistically sell goods for drops below what you paid, accounting rules require a write-down.
Lower of Cost and Net Realizable Value (GAAP)
For inventory valued under FIFO or weighted average cost, ASC 330 requires measurement at the lower of cost and net realizable value. Net realizable value is what you expect to sell the goods for, minus the costs to complete the sale and ship them. You assess it at each balance sheet date. If market conditions, regulatory changes, or new technology have eroded what your inventory is worth, you record a loss that brings the balance sheet figure down to reality. No loss should be recognized unless it’s clear the loss has actually been sustained.
IRS Rules for Damaged or Obsolete Goods
The IRS has its own, more demanding requirements for claiming a deduction on inventory that has lost value. Damaged, shopworn, or otherwise “subnormal” finished goods must be valued at what you can actually sell them for, minus direct selling costs, and you must offer them for sale at that price within 30 days of the inventory date.5IRS. Lower of Cost or Market (LCM) Subnormal raw materials must be valued at no less than scrap value. The burden of proof is on you, so keep records of the goods’ condition and evidence of sale offerings or actual sales. For completely obsolete goods with no market demand at all, courts have allowed revaluation without the strict offer-for-sale requirement, but the general expectation is a genuine attempt to sell.
Tracking Systems and Shrinkage
A perpetual system updates inventory records in real time on every sale or purchase. Point-of-sale scanners, barcode readers, and inventory management software handle the bookkeeping automatically, so stock levels are visible at any moment without counting a single item. Most mid-size and large retailers use this approach because the real-time visibility speeds reorder decisions and surfaces discrepancies before they compound. The trade-off is the upfront cost of the technology and the maintenance it needs.
A periodic system updates inventory only at the end of a reporting period. Purchases accumulate in a temporary account throughout the period, and a physical count at the end determines what remains. The difference between what was available and what’s left becomes cost of goods sold. The approach is simpler and cheaper, which works for smaller operations with limited product lines, but you fly blind between counts and theft or damage stays hidden until someone walks the shelves.
Even a perpetual system needs physical verification. Cycle counting, where a small portion of inventory is counted on a rotating schedule throughout the year, catches discrepancies as they happen and shrinks the size of year-end adjustments.
Recording Shrinkage
Shrinkage is the gap between what the records say you should have and what a physical count reveals. Theft, damage, spoilage, and administrative errors all contribute, and retail shrinkage commonly runs between 1% and 2% of sales. When a count uncovers a shortfall, you record an inventory shrinkage expense and reduce the inventory account by the same amount. If the books show $100,000 of inventory but the count turns up $95,000, a $5,000 shrinkage expense hits the ledger. That adjustment flows through to cost of goods sold and reduces reported profit for the period.
Measuring How Hard Your Inventory Is Working
The inventory turnover ratio tells you how many times the business sold through its entire inventory during a period:
Inventory Turnover = Cost of Goods Sold ÷ Average Inventory
Average inventory is beginning and ending balances added together and divided by two. A higher ratio generally signals strong demand and efficient purchasing. A lower ratio points to overstocking, weak sales, or products losing relevance. Inventory sitting on shelves ties up cash, incurs storage costs, and risks obsolescence. An unusually high ratio isn’t automatically good news, though. It can also mean under-ordering and lost sales from stockouts. The number is most useful compared against industry peers, since healthy turnover for a grocery chain looks nothing like healthy turnover for a furniture retailer.