Channel stuffing is inflating revenue by pushing more product to distributors and retailers than real demand supports, borrowing next year's sales to dress up this year's.
The mechanism rests on one accounting fact: revenue is booked when goods ship to the channel (distributors, wholesalers, retailers), not when an end customer buys them. Suppose your coffee shop grows into roasting and selling bagged beans through supermarkets. December arrives, the year looks weak, and you want the numbers to look better. So you call every supermarket and offer irresistible terms, deep discounts, 120 days to pay, generous return rights, to take triple their usual order now. They agree, the trucks roll, and you book it all as December revenue. The year looks saved.
The problem: the supermarkets' storerooms are now packed with your beans. In January, February, and March they order nothing, they are selling down the pile. So next year starts with a revenue hole, which pressures you to stuff the channel even harder next December. It is a treadmill that speeds up until it cannot, and when it breaks, revenue collapses all at once and the truth about real demand surfaces.
Where it sits legally: shipping real goods on aggressive terms is lawful, if disclosed honestly. It becomes securities fraud when paired with hidden side deals, secret return rights, or backdated shipments. Several famous accounting scandals (Sunbeam is the textbook case) were built on it.
How a reader spots it: receivables growing much faster than revenue (goods shipped, cash not arriving, DSO climbing), a suspicious pattern of huge quarter-end spikes, and rising product returns. The DSO entry's warning about receivables outrunning sales is, in part, a channel-stuffing detector.