Purchase Limit

Limit how many units a customer can buy of a product or variant — per customer, across every order they place.

• Per-customer limits. Cap quantity per customer, lifetime or over a rolling window you choose.
• Cross-order enforcement. Limits hold across every order, including express and accelerated checkout.
• Auto-restore. Refund or cancel an order and the customer's allowance resets automatically.

Install Purchase Limit from the Shopify App Store to get started.