ATS (available to sell) is the quantity of a product that can still be promised to a buyer: the stock on hand plus units already in production or in transit, minus everything already committed to confirmed orders, allocations and reservations.
ATS = on-hand stock + incoming stock − committed stock
Oct 9, 2026
Available to sell starts from the stock a brand physically holds, adds units already in production or in transit, and then subtracts everything that is already promised: confirmed orders, allocations held for key accounts, and units reserved for other channels such as the brand’s own retail.
For example, 500 units on hand plus 300 in transit, minus 450 already on confirmed orders and 50 held for a key account, leaves an ATS of 300.
The result is the number a sales rep can safely quote. Selling against total stock rather than ATS is the most common cause of oversold styles and cancelled lines late in a season.
ATS is not a static figure. It changes every time an order is confirmed, a delivery arrives, a buyer cancels, or a reservation expires. In practice this means ATS is only useful if it is recalculated continuously and shown at the moment of ordering.
Brands selling in-season typically expose ATS directly to buyers so that self-service orders cannot exceed what exists. Brands selling pre-order work the other way around: there is no stock yet, so availability is governed by production capacity and cut-off dates instead.
Pre-orders, stock orders and reorders in one platform.
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