How do I set up quantity break tiers?

Updated November 2, 2026 · SMART Bundles App & Upsells (E-TRADE PARTNER)

Create a bundle from the Quantity breaks template and keep one offer per quantity, for example Buy 1, Buy 2 at 10% off and Buy 3 at 20% off. At checkout, the highest tier the cart reaches applies to every unit of that product, unless you tick Only full packs of N get the discount.

Set up the tiers

1. In Shopify admin, open SMART Discounts (the app's name in your admin) and click Create new discount.
2. Pick the Quantity breaks template. It starts with Buy 1 (no discount), Buy 2 at 10% and Buy 3 at 20%, with Buy 2 pre-selected.
3. On the Offers tab, open Show this bundle on and choose All products (the default), Products or Collections. See Target products and exclusions.
4. Open each offer card and set Quantity, Discount and Value. To add a tier, click Add another offer and choose Quantity breaks.
5. Edit Title, Subtitle, Badge and Checkout name. Variables such as {{quantity}} and {{saved_percentage}} fill in on the storefront.
6. Optional: tick Pre-selected offer on one card (one per bundle), and Show quantity selector to let shoppers buy several packs of a tier.
7. Click Create and check a targeted product page. The widget needs the app embed.

Discount types per tier

When your store sells in other currencies, amount and fixed types get a globe button next to Value (Prices per currency) that sets your own amount per currency. See Markets and currencies.

How checkout prices the tiers

• Highest tier reached, every unit. With Buy 3 at 10% and 4 units in the cart, all 4 get 10% off. A Buy 3 tier also covers 7 or 10 units.
• Per product. Each product counts on its own, with its variants added together. 2 red and 1 blue of one shirt reach Buy 3; 2 of shirt A and 1 of shirt B don't. To count different products together, use a Mix and match offer.
• Only full packs of N get the discount. Ticked, only whole packs are discounted: Buy 3 with 7 units discounts 6, and 1 pays full price. The checkbox shows once the offer has a discount and a quantity above 1.
• Fixed total price always counts full packs. Leftover units pay full price. It never raises a price: if the pack already costs less, nothing changes.
• Rounding per item. Each item's percentage discount is rounded down to the cent: 15% off 19.99 takes off 2.99, so each item costs 17.00. A pack total can differ by a few cents from the percentage of the whole. The widget rounds the same way. For an exact pack price, use Fixed total price.
• The cart counts, not the click. Units added from a collection page or the cart also reach a tier. To discount only items added through the widget, tick Apply the discount only to items added through the widget on the Settings tab, under Discount rules.

Edge cases

• Count each variant separately (Settings tab > Variant pickers) makes tiers count each variant on its own. It can't be used together with Pick a variant for each unit. See Variant pickers.
• While the selected offer sets the quantity, the theme's own quantity box is hidden. Hide theme quantity selector (Settings tab > Theme integration) hides it for every offer.
• A product page shows one bundle. The editor warns you when another active or scheduled bundle targets the same products.
• Bundles are automatic, with no code. With other discounts, see Combine with other discounts.

More on the offer: Quantity breaks, Quantity breaks on Shopify and the bundle discount calculator.

Frequently asked questions