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LIFO

LIFO stands for Last In, First Out—an inventory costing method where the most recently purchased items are assumed to be sold first. When calculating cost of goods sold (COGS), LIFO uses the cost of your newest inventory purchases before moving to older ones. It's the opposite of FIFO and generally

LIFO Definition

LIFO stands for Last In, First Out—an inventory costing method where the most recently purchased items are assumed to be sold first. When calculating cost of goods sold (COGS), LIFO uses the cost of your newest inventory purchases before moving to older ones. It's the opposite of FIFO and generally results in higher COGS during periods of rising prices.

LIFO in Practice — Example

A hardware store buys 100 hammers in January at $15 each and another 100 in March at $18 each. In April, they sell 120 hammers. Under LIFO, the first 100 sold are costed at $18 (March batch), and the remaining 20 are costed at $15 (January batch). Their COGS for those 120 hammers is $2,100. The 80 hammers remaining in inventory are valued at $15 each, or $1,200—lower than under FIFO.

Why LIFO Matters for Your Books

LIFO generally produces higher COGS and lower profits during periods of rising prices, which means lower taxes in the current period. This is the main reason businesses choose LIFO—it defers tax liability by reducing taxable income. However, the trade-off is a lower inventory value on the Balance Sheet.

LIFO can significantly impact financial ratios and lending decisions. A lower inventory value means lower current assets, which can hurt liquidity ratios and working capital calculations. Some lenders prefer to see FIFO-based statements because they show a stronger balance sheet.

LIFO is also more complex to maintain than FIFO, especially for businesses with many different products. It requires careful tracking of inventory layers and can create unusual results if inventory levels fluctuate significantly—known as "LIFO liquidation."

How LIFO Shows Up in QuickBooks

QBO doesn't support LIFO natively—it uses FIFO as its default and only inventory costing method. If you want to use LIFO for tax purposes, you'll need to maintain LIFO calculations outside of QBO (typically in a spreadsheet) and make year-end adjusting entries to convert your books from FIFO to LIFO. Many businesses using LIFO upgrade to more sophisticated inventory software like Sage 100, QuickBooks Enterprise, or industry-specific solutions that support multiple costing methods.

Common Mistakes

  • Switching between FIFO and LIFO: Once you elect LIFO for tax purposes, you must use it consistently and get IRS approval to change methods. You can't switch back and forth based on which method looks better each year.
  • Using LIFO without understanding the complexity: LIFO requires tracking inventory layers by purchase date and cost. It's more complicated than FIFO and can create unexpected results during inventory liquidation periods.
  • Assuming LIFO always saves taxes: LIFO only provides tax benefits during inflationary periods. If prices are falling, LIFO actually increases your tax bill compared to FIFO.

    • FAQ

    Q: Can I use LIFO in QuickBooks Online?

    A: No. QBO only supports FIFO. If you need LIFO for tax purposes, you'll need to maintain separate calculations outside QBO or upgrade to QuickBooks Desktop Enterprise or other software that supports LIFO.

    Q: Is LIFO accepted under international standards?

    A: No. IFRS (International Financial Reporting Standards) prohibits LIFO. It's only allowed under U.S. GAAP, and many countries don't permit it for tax purposes.

    Related Terms

  • FIFO
  • Cost of Goods Sold
  • Inventory
  • Inventory Turnover
  • Lower of Cost or Market

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