In
accounting, a technique for
valuing inventory by treating inventory acquired most recently as if it were sold first. The
sale of inventory is recorded against the purchase
price of the most recently acquired inventory, even if the physical goods are not the same. In times of high
inflation, the last-in, first out technique reduces a business'
inflation risk. It also may reduce one's
tax liability. For these reasons, most American firms have used this technique in their accounting since the 1970s.