Which app lets me stack discounts on Shopify?

Who this guide is for

This guide is for Shopify merchants who searched for a stacking app. "Stacking" means more than one discount applies to the same order, for example 20% off a sale collection plus a 10% welcome code plus free shipping.

Many stores don't need an app for that. This page shows what Shopify combines on its own, where it stops, and which app fits each need beyond it. We compared 7 apps. Every competitor fact comes from the app's Shopify App Store listing, checked on November 10, 2026. Prices are per month, in US dollars, and can change.

What Shopify stacks on its own

Every Shopify discount has one class: product, order or shipping. Two discounts apply together only when the Combinations setting on each one allows the other's class (Shopify's discount combinations page, checked November 10, 2026). For the setup steps and the full table of which pairs combine, see combine and stack discounts on Shopify.

To let two discounts stack:

1. From your Shopify admin, go to Discounts and click the first discount.
2. In the Combinations section, select the classes it may combine with: product, order or shipping.
3. Click Save.
4. Open the second discount and select the first discount's class in its Combinations section.
5. Click Save, then test both at checkout.

If your problem is the opposite, codes stacking on a sale when they shouldn't, you don't need a stacking app. See stop discount codes stacking on an automatic discount.

Which stacking app fits your need

Stacking apps solve four different problems. Pick the one that matches yours.

• Several offers that add up inside one discount, for example 10% off for buying 2 plus 5% more for VIP customers. Discount Genie's discount groups and Multiscount do this.
• Several codes typed in the cart, so shoppers see the total saving before checkout. Dr Stacked Discounts on Cart, DiscountYard and ThanhBT: Discounts Combine do this.
• One code that gives several savings, for example SAVE20 for 20% off plus free shipping. Stackable, ThanhBT: Discounts Combine and Discount Genie's paid plans do this. See percent off and free shipping in one code.
• Stacked campaigns for a sale day, shown in a promotions widget. Stack Discounts Pro does this.

Discount Genie

Discount Genie (by Shopstack, the team behind this guide) uses Shopify's own Combinations settings, so each discount combines with the classes you tick (combine (stack) discounts).

• Discount groups put several offers in one discount, each with its own value, products and customer rules. By default only the highest-priority group applies. Tick Allow multiple discount groups to apply to let more than one group discount the same cart, or Discount groups can stack to add up discounts of the same kind. Discount groups are on paid plans, from the Core plan up.
• The Standard + Shipping style gives a percentage or amount off and a shipping discount from one code, on paid plans.
• Promo code rejection rules cap how many codes a shopper can use on one order, or block certain codes. They are on the basic free plan, which covers up to 3 basic discounts.
• Payment method discounts, for example 5% off when a shopper pays by bank transfer, are on every plan.

New stores pay $0.99/mo for the first 3 months on any monthly paid plan, then from $29.99 a month on the Core plan.

Other stacking apps

Dr Stacked Discounts on Cart by Shop Doctors adds a discount code field to the cart, so shoppers can use several codes together and with automatic discounts before checkout. It also has a free shipping progress bar. It is free only for stores on a free Shopify plan. The Essentials plan, $4.99 a month, lists the cart code field and automatic discounts that are not stacked. Stacked discounts are listed on the Pro plan at $9.99 a month. Shopify Plus stores pay $19.99 a month (App Store listing).

Stackable by Optizio applies several discounts from a single code with its progress discount type, and adds checkout upsells. It has no free plan. The Growth plan is $19.99 a month for stores not on Shopify Plus, and the Unlimited plan is $99.99 a month (App Store listing).

ThanhBT: Discounts Combine offers two ways to stack. Combined+ creates one code that applies several discounts at checkout with no widget, and Basic Combine lets shoppers enter several codes in the cart. The free Basic plan covers 3 Basic Combine uses a month. The Premium plan is $9.95 a month and adds Combined+ (App Store listing).

DiscountYard — Stack Discounts by MerchantYard lets shoppers stack codes in a discount field on the cart, and adds tiered automatic discounts, one code that combines several discounts, product labels and bundles. It is free only for Shopify trial and partner stores. The Pro plan is $19.95 a month, and Shopify Plus stores pay $49.95 (App Store listing).

Multiscount: Tiered Discounts by Nextools builds stackable and tiered discounts, with volume discounts, free gifts, order goals and shipping discounts. It is free only for development and Plus sandbox stores. The Premium plan is $8.99 a month for up to 5 product and 5 order discount tiers. The Advanced plan, $15.99 a month, allows up to 12 (App Store listing).

Stack Discounts Pro by Uniocode runs multi-discount campaigns for sale days such as Black Friday, with scheduling and a promotions widget. It has no free plan. The price depends on your Shopify plan: $9.99 a month on Basic, $14.99 on Shopify and Advanced, and $24.99 on Plus (App Store listing).

Stacking apps side by side

Prices are from each Shopify App Store listing, checked November 10, 2026, per month in US dollars.

Related

• Combine and stack discounts on Shopify
• Stop discount codes stacking on a sale
• Percent off and free shipping in one code
• Best Shopify discount apps (2026)
• Best Shopify volume discount apps
• Combine (stack) discounts (Discount Genie docs)