Guides
Shopify Functions guides for merchants
One merchant question per guide, answered from real support conversations and checked against how Shopify Functions actually behave: what replaced Scripts, why discounts refuse to stack, how quantity tiers count units, and how to build gift offers that stop where you want them to.
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Install freeShopify Scripts have ended. Here is what replaces each script type
Shopify Scripts stopped running on June 30, 2026. Here is what replaces line item, shipping, and payment scripts, and how to rebuild each one as a Shopify Function without code.
Updated September 7, 2026
Combining and stacking discounts in Shopify: why only one applies, and how to fix it
How Shopify discount combinations work with Functions: automatic plus code, code plus code, why two discounts on the same product never stack, and how to set exclusive tiers so the right one wins.
Updated September 7, 2026
Tiered and volume discounts in Shopify: quantity tiers, fixed unit prices, and grouping explained
Set up quantity tiers, a fixed unit price per tier, collection-wide tiers, and per-variant tiers with a Shopify discount Function. Covers grouping, all-units repricing, and what tiers cannot do.
Updated September 7, 2026
Buy X get Y and free gifts in Shopify: how to build them with a discount Function
Build buy 2 get 1 free, buy 5 get 2, gift with purchase, and cross-collection offers with a Shopify discount Function. Covers gift line groups, tier bounds, leftovers, and why gifts are not auto-added.
Updated September 7, 2026
More guides are published as they are written: line item property discounts, free shipping rules, checkout validation patterns, hiding payment and shipping methods, wholesale pricing, debugging, and Functions without Plus. The help center already covers the mechanics behind each.
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