Quantity rules define minimum, maximum, or increment quantities customers must purchase.
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Quantity rules are Shopify B2B settings that control how many units of a product a customer can purchase in a single order.
They let merchants enforce minimums, maximums, and purchase increments for specific products or variants.
For example, a merchant can require that a product be ordered in cases of 12, with a minimum order of 24 units and a maximum of 120 units.
Minimum quantity: The smallest number of units a customer can buy.
Maximum quantity: The largest number of units a customer can buy.
Increment (multiple): The quantity step in which items must be purchased (for example, 6, 12, 18, etc.).
Quantity rules are commonly used in wholesale and B2B selling to ensure orders meet packaging, inventory, or wholesale purchasing requirements.
Example: A merchant sets a minimum of 10 units and increments of 5. Customers can order 10, 15, 20, 25, and so on, but not 11 or 12.
In short, quantity rules help merchants control order quantities by setting minimums, maximums, and purchase increments for products or variants.