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    Inventory: Buying, Selling and Writing It Down

    Buying inventory moves the balance sheet, selling it creates cost of goods sold, and writing it down cuts profit. Each traced, with Target's 2021 to 2023 cycle.

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    US GAAPWritten under US GAAP. IFRS treats this topic the same way, so it applies to IFRS reporters too.

    Introduction

    In 2021, Target built up its inventory by about $3.2 billion as it stocked up for strong demand and supply chain delays. Buying that stock would normally have used the same amount of cash, but Target had not yet paid for most of it: what it owed suppliers, its accounts payable, rose by $2.6 billion. The net cash cost of the build was only about $0.6 billion. The next year, demand shifted away from the categories Target had stocked. The company marked down goods, cancelled orders and cleared excess stock, steps its fiscal 2022 annual report links to lower profit. Its gross margin rate fell from 28.3% to 23.6%, and its operating cash flow fell by more than half, to $4.0 billion, as earnings dropped and payables unwound.

    Inventory transactions are some of the most common in any business, and they illustrate why profit and cash flow follow different timetables. The cost of inventory reaches the income statement only when goods are sold, but the cash for it leaves when suppliers are paid, which can be weeks before or after. Tracing the three stages, buying, selling and writing down, with the method from tracing a transaction through the statements, shows where each effect lands.

    Buying Inventory: Balance Sheet First

    Buying inventory is not an expense. The goods are an asset until they are sold, so a purchase changes only the balance sheet and, if paid in cash, the cash flow statement. Inventory purchases are an operating cash flow, not an investing one, because inventory is consumed in the ordinary course of business; they appear on the cash flow statement as the change in inventory within working capital, explained in working capital on the cash flow statement.

    Most companies buy on credit. Suppose a company receives $100 of inventory from a supplier, to be paid in 60 days:

    Statement effects
    $100 of inventory bought on credit
    Payment due to the supplier in 60 days
    1Income statement
    No change
    2Cash flow statement
    Increase in inventory(100)
    Increase in accounts payable+100
    Change in cash0
    3Balance sheet
    Assets
    Inventory+100
    Liabilities
    Accounts payable+100
    Equity
    No change
    Balance sheet balancesAssets +100 = Liabilities +100 + Equity 0

    The income statement is untouched. On the cash flow statement, the inventory increase uses $100 of cash and the payables increase provides $100, so cash does not change. The balance sheet grows on both sides. When the supplier is paid 60 days later, cash and payables both fall by $100, again with no effect on profit. Had the company paid cash on delivery, the trace would show a $100 fall in cash and a $100 rise in inventory, an asset swap with the cash outflow in operating activities.

    Costs That Become Part of Inventory

    For a manufacturer, "buying" inventory includes making it. Under Accounting Standards Codification (ASC) Topic 330, raw materials, factory wages, freight into the warehouse and an allocation of production overhead, including depreciation of the factory, are all added to the cost of inventory rather than expensed as incurred. Those costs pass through the income statement only when the finished goods are sold. The consequence is that a company producing more than it sells defers part of its fixed overhead into the inventory balance, raising reported profit in the current period while the cash for wages and materials has already gone out. A rising inventory balance alongside improving gross margins is therefore worth a second look: the margin may reflect costs parked on the balance sheet rather than a better business.

    Inventory

    Goods held for sale in the ordinary course of business, along with materials and work in progress that will become such goods. Inventory is carried at cost, under a method such as first-in, first-out (FIFO), last-in, first-out (LIFO) or weighted average, or lower if written down, until it is sold, when its cost becomes cost of goods sold.

    Selling Inventory: Revenue and Cost of Goods Sold

    The sale is where inventory reaches the income statement. Revenue is recognized under ASC 606 when control of the goods passes to the customer, and the cost of the goods sold leaves inventory at the same moment, matched against the revenue it produced. Suppose the company sells goods that cost $60 for $100, on credit, with a 25% tax rate and tax paid in cash:

    Statement effects
    Goods costing $60 sold for $100 on credit
    25% tax rate, tax paid in cash; the customer pays next period
    1Income statement
    Revenue+100
    Cost of goods sold(60)
    Pre-tax income+40
    Income tax expense(10)
    Net income+30
    2Cash flow statement
    Net income+30
    Increase in accounts receivable(100)
    Decrease in inventory+60
    Change in cash(10)
    3Balance sheet
    Assets
    Cash(10)
    Accounts receivable+100
    Inventory(60)
    Liabilities
    No change
    Equity
    Retained earnings+30
    Balance sheet balancesAssets +30 = Liabilities 0 + Equity +30

    Net income rises by $30, yet cash falls by $10. The cash flow statement subtracts the $100 of uncollected revenue and adds back the $60 of inventory consumed, leaving the $10 of tax paid as the only cash movement. On the balance sheet, receivables rise $100, inventory falls $60 and cash falls $10, a net $30 increase in assets matched by retained earnings. When the customer pays, cash rises and receivables fall by $100 with no further effect on profit. How gross profit is built from these figures is covered in cost of goods sold and gross profit.

    LIFO, FIFO and Cash Taxes

    The inventory method decides which costs become cost of goods sold, and when prices are rising it changes cash. Under LIFO, the most recent and most expensive purchases are expensed first, so cost of goods sold is higher, taxable income is lower and cash taxes fall; under FIFO, the older and cheaper costs are expensed first. If LIFO raises cost of goods sold by $10 in a year, pre-tax income falls $10, net income falls $7.50 at a 25% tax rate and cash rises $2.50, the tax saved, while inventory on the balance sheet is $10 lower. Section 472(c) of the Internal Revenue Code allows LIFO for tax only if it is also used in the financial statements, which is why some companies accept lower reported profits to keep the cash benefit. The methods and their effects are compared in inventory costing methods.

    Writing Inventory Down

    Inventory that has become obsolete, damaged or unsellable at its cost is written down. Under Accounting Standards Update (ASU) 2015-11, inventory measured on FIFO or average cost is carried at the lower of cost and net realizable value, the expected selling price less the costs to complete and sell it; LIFO and the retail inventory method still use the older lower-of-cost-or-market test, as PwC's text of the inventory measurement update sets out. The write-down is usually recorded in cost of goods sold.

    On the statements, a write-down follows the non-cash charge pattern. A $40 write-down of stock that is scrapped in the year, so deductible for tax at 25%, reduces net income by $30; the cash flow statement adds the $40 back, either as a separate line or within the change in inventory; cash rises by $10, the tax saved; and inventory falls by $40. Where the goods are still on hand, US tax rules generally allow no deduction until they are sold or scrapped, so the $10 appears as a deferred tax asset rather than cash. The rules for measuring the write-down are in inventory write-downs.

    Target's Inventory Cycle, 2021 to 2023

    Target's figures, drawn from its fiscal 2023 annual report, show the three stages playing out at scale across three years:

    Cash flow statement
    Target, inventory and operating cash flow
    $ in millions, fiscal years
    Line item202120222023
    Net earnings6,9462,7804,138
    Change in inventory(3,249)4031,613
    Change in accounts payable2,628(2,237)(1,216)
    Cash provided by operating activities8,6254,0188,621
    Gross margin rate28.3%23.6%26.5%

    Source: Target fiscal 2023 Form 10-K; other operating cash flow lines omitted. Fiscal 2023 had 53 weeks. Year-end inventory was 13,499 in fiscal 2022 and 11,886 in fiscal 2023.

    In 2021, the inventory build looked almost free in cash terms, because higher payables offset most of it. In 2022, the reversal hit twice. Markdowns to clear excess stock helped cut the gross margin rate by nearly five percentage points, alongside higher freight costs, and net earnings fell by more than half. At the same time, Target cancelled orders and received fewer goods, so payables fell by $2.2 billion while inventory fell only slightly; the supplier financing that had carried the build disappeared. In 2023, inventory fell by $1.6 billion, releasing cash, and operating cash flow recovered to $8.6 billion even though earnings were still below their 2021 level.

    What Bankers Watch

    Inventory is one of the clearest early-warning signals in a set of accounts. Bankers compare its growth with sales growth, since stock rising much faster than sales often precedes markdowns and write-downs, and track days inventory outstanding (DIO) alongside days payables outstanding (DPO) to see how much of the inventory is financed by suppliers. Those ratios, with days sales outstanding (DSO), are explained in DSO, DIO and DPO.

    In acquisitions, inventory is a central part of the net working capital the buyer expects to receive at closing. A seller that runs inventory down before a sale can flatter its cash generation, and one that builds it up can absorb the buyer's cash after closing, which is why purchase agreements set a working capital target, a mechanism covered in the blog's guide to net working capital adjustments in mergers and acquisitions. In every case, the trace is the same: buying inventory moves the balance sheet, selling it moves profit, and the timing of payments to suppliers decides when the cash actually changes hands.

    Interview Questions

    1
    Question #1Easy

    A company buys $100 of inventory on credit, then sells all of it for $140 in cash (25% tax). Walk me through both steps.

    Step 1, the purchase on credit: only the balance sheet moves.

    1. 1.Income statement: no effect; inventory is an asset until it is sold.
    2. 2.Cash flow statement: no cash moves (the inventory increase and the payables increase offset in working capital).
    3. 3.Balance sheet: inventory up $100, accounts payable up $100.

    Step 2, the sale for cash:

    1. 1.Income statement: revenue of $140, COGS of $100, pre-tax income of $40, tax of $10, net income up $30.
    2. 2.Cash flow statement: net income up $30, plus the $100 decrease in inventory (a source of cash), so operating cash flow rises by $130.
    3. 3.Balance sheet: cash up $130, inventory down $100, so assets rise by $30; retained earnings rise by $30. Payables are still $100 until the supplier is paid.

    When the supplier is paid, cash and payables both fall by $100. Over the whole cycle the company keeps the $30 of after-tax profit; the timing of cash depends on when customers pay and when suppliers are paid.

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