15% Off Orders with 3+ Items

When to use this

Use this template when you want to encourage larger baskets by tying a discount to the number of items in the cart – for example "15% off your whole order when you buy 3 or more items". This is a useful basket-size lever when your average order has one or two items and you'd like to nudge customers up.

How it works

This is an Item Group promotion that uses a quantity-summing trigger condition to gate eligibility, and a percentage action that applies once eligibility is met.

• Cart Attribute Sum Condition on Combined Quantity – this is the key piece. It sums the quantity of all items in the cart and checks whether the total is at least 3. The item-subselection conditions inside the condition group are left empty so every item contributes to the sum.
• Item group with no conditions – the item group matches every product in the cart, with Quantity: 1 so each item forms its own batch.
• Percentage action – once the trigger fires, a flat 15% discount is applied to every item batch (every item in the cart). Batch Limit: 0 means there's no cap on how many batches discount.
• Lock Affected Items: Yes – items receiving this discount are locked out of subsequent promotions so it doesn't stack accidentally.

For the underlying concepts see Trigger Conditions, Item Groups, and Promotion Action in Creating a Promotion.

📘

What's a Cart Attribute Sum Condition?

Unlike a regular condition that compares a single attribute against a value, a Cart Attribute Sum Condition is a condition group that sums a numeric attribute across some subset of items in the cart and compares the total against a value. Leave its item-subselection conditions empty to sum across every item, or add conditions to sum only across matching items (e.g. "3 or more shoes").

Step-by-step setup

1. From your Deducto Dashboard, open the promotions list for your project and click New.
2. Choose Item Group as the promotion type.
3. On the General Information tab, set the name, schedule, and behaviour. The full set of values is in the field reference below.
4. On the Trigger Conditions tab:
   • Leave the condition orchestration as "If all of these conditions are true".
   • Click Add Condition Group and choose Cart Attribute Sum Condition.
   • In the new condition group, select Combined Quantity as the attribute and set the operator to is greater than or equal to. Hover the condition group's orchestration row, click the Edit icon, enter 3 as the value, then click Done.
   • Leave the item-subselection conditions inside the group empty so every item contributes to the sum. The orchestration row should read something like "If Combined Quantity is greater than or equal to 3 for a subselection of items in the cart matching all of these conditions".
5. On the Item Groups tab, configure the default group:
   • Name it Any Item.
   • Set Quantity to 1.
   • Leave the conditions empty so every product in the cart matches.
6. On the Action tab, choose Apply A Percentage Discount to Item Group(s), set Percent to 15, and check the Any Item group under Target Item Groups. Leave the rest of the limits at 0.
7. Click Save.

Variations

• Different quantity threshold. Adjust the Combined Quantity value (e.g. 5 for a "buy 5 or more" deal).
• Different discount. Adjust Percent on the Action tab, or switch the action to Apply A Fixed Amount Discount to Item Group(s) for a per-item dollar discount.
• Restrict which items count toward the threshold. Add item-subselection conditions inside the Cart Attribute Sum Condition so only matching items contribute to the sum (e.g. "3 or more shoes").
• Cap total discount per cart. Set Maximum Discount Amount on the Action tab.
• Discount only the qualifying items, not the whole cart. Add the same item conditions to the item group, so only items matching the subselection get the percentage off.

Testing

1. Add 1 or 2 items to your cart and confirm no discount is applied.
2. Add a third item and confirm the 15% discount applies to every item in the cart.
3. Add more items and confirm the discount continues to apply to all of them.

Field reference

The full set of fields used by this template: