When a customer places a pre-order for a product on Shopify, the inventory policy comes into play. The inventory policy determines how the system manages stock levels and availability for pre-ordered items. There are two primary inventory policies that are relevant in the context of pre-orders

### **On sale**

Units purchased will be automatically deducted from the product inventory when the customer completes the checkout. When a customer completes the checkout process on Shopify, the platform will automatically deduct the purchased items from the inventory.

### **On fulfillment**

Shopify will automatically deduct the purchased items from the inventory when the order is fulfilled.

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**Deduction from inventory after fulfillment doesn't work with the ASAP shipping date!**

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You can select the inventory policy to meet your needs in the **Inventory policy** section on the **Payment** page.

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