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Komerza gives you three independent ways to discount: coupon codes that customers enter at checkout, volume discounts that apply automatically as quantity increases, and pop-up offers shown on the storefront. They can be combined, and there is one control for stopping them from stacking.

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Coupon codes

Coupons are managed under Products → Coupons. Coupon capacity depends on your plan: Free 5, Premium 1,000, Business unlimited.

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What customers see when a code fails

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The code does not exist, or has been disabled.
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The code exists but is expired, fully used, or restricted to variants that are not in the cart.
A coupon’s usage count increments when the order is delivered, not when it is paid - so the count can look low while orders are still in flight.

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Volume discounts

Volume discounts are quantity tiers set per variant, on the variant card. Each tier has a quantity threshold and one of three types:
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A percentage off, shown on order pages as e.g. “10% off”.
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An amount off per unit, shown in your store currency, e.g. “5.00 off total”.
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A new unit price, shown in your store currency, e.g. “8.00 each”.
Each quantity can carry only one tier - duplicates are rejected with “A volume discount tier for quantity N already exists.”
Volume discounts pair well with variants that have a maximum quantity set generously. If your variant caps quantity at 1, tiers above 1 can never be reached.

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Stopping discounts from stacking

Each variant has a Disable volume discount on coupon toggle. When enabled, volume pricing is dropped if the customer applies a coupon code, so the two discounts never combine on the same line item. Decide this per variant based on your margin - the default is that both can apply.

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Pop-up offers

Products → Pop-up Offers manages storefront discount dialogs. These are shown to visitors on your storefront and are configured separately from coupon codes.

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Affiliate discounts

Affiliate discounts are a fourth, separate mechanism: they are configured per product on the product editor’s Affiliate tab, where you can use your store’s default affiliate discount, set a custom percentage, or turn it off for that product. They apply when a customer arrives through an affiliate link rather than by entering a code.

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Applying discounts in bulk

The Products list supports bulk updates, including the affiliate discount across many products at once. Coupon codes themselves are store-wide by default, so a single code is usually simpler than editing many products.

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Next steps

Products & Variants

Pricing, quantity limits and stock modes.

Managing Orders

See which coupons were used on an order.

Coupons API

Create and manage coupons programmatically.

Affiliates API

Configure affiliate commission and discounts.