Square Shopify Integration for Inventory Sync
SKU IQ connects your Square POS to your Shopify eCommerce, keeping stock and product data unified and up to date automatically, so you stop overselling and stop entering the same product twice to keep inventory data unified and up to date across platforms.
No credit card required to check compatibility
SKU IQ won't change any data until you tell it to.

Works across your stack

What is Square × Shopify integration?
Square Shopify Integration through SKU IQ is a no-code connection layer between your existing Square POS and Shopify eCommerce. It is not a new POS, an ERP, or an inventory suite. Square POS stays the POS; Shopify eCommerce stays the ecommerce channel. Nothing migrates off either system.
Whenever one platform sells something, the other will update the corresponding stock, keeping inventory numbers unified and up to date. Product attribute sync of fields like titles, descriptions, prices, variants, and SKUs can also be turned on either uni- or bi-directionally.
Unify both platforms and use SKU IQ to leverage the best they have to offer.
Why retailers connect Square and Shopify
Stop overselling
A sale at the brick-and-mortar location or on Shopify eCommerce updates stock on the other platform, keeping inventory unified and up to date. That means fewer surprises, fewer manual adjustments, and more confidence in what is available to sell.
No double data entry
Stop entering the same product twice. When product attribute sync is on, supported attributes such as titles, descriptions, prices, variants, SKUs, and UPCs can carry across uni- or bi-directionally based on your setup.
Keep systems you already use
SKU IQ is not a new POS, ERP, or inventory suite. It connects the Square POS and Shopify eCommerce you already use, so each platform can keep doing what it does best while inventory stays unified and up to date across platforms.
Two ways to unify your inventory
Once Square POS and Shopify eCommerce are connected, you tell SKU IQ how products relate between the two platforms.
Link existing items
SKU IQ reads all inventory in both the Square POS and Shopify eCommerce, checks for items matching by title/name, SKU, or UPC, and generates a Link Report so you can select what to link and how. Products must have the same structure on both platforms to be linked. For example, a non-variable item in Square POS will not match a variable set of items in Shopify eCommerce.
Push a catalogue across
SKU IQ sends the chosen item data across, creates an identical copy on the destination platform, and establishes a syncing relationship between the new copy and the original so future stock changes are communicated automatically between both platforms.
What syncs between Square and Shopify
Multi-location setup? SKU IQ is built for single-location retailers syncing one POS to one Shopify eCommerce. Multi-location merchants should talk to SKU IQ about their setup before starting a trial.
What to expect during setup
You do not need developers, code, or a technical implementation project. If products already exist on both platforms, most retailers are syncing the same day.
Create your SKU IQ account
Shopify eCommerce + Square POS
Connect both platforms
Authorize both platforms through the guided flow. Your catalogues load in, and nothing is altered until you confirm what you want SKU IQ to do.
Run a link report
SKU IQ reads all inventory in both platforms and matches items by title/name, SKU, or UPC. Confirm the matches you want, remembering that products must have the same structure on both platforms to link. A non-variable Square POS item will not match a variable set in Shopify eCommerce.
Review unmatched items
Fix spelling differences or push products across. A push creates an identical copy on the destination platform and establishes a syncing relationship with the original.
Validate Sync
Validate the first sync with one or two products so you can see quantities stay unified and up to date.
Choose sync & go live
Set optional product attribute sync for supported fields, either uni- or bi-directionally.
Migrating a large catalogue
During the trial, customers are limited to 50 product pushes. Bulk pushes are available for larger catalogues for a one-time fee; contact Support for a quote.
When SKU IQ pushes a catalogue, it sends the chosen item data across, creates an identical copy on the destination platform, and establishes a syncing relationship with the original so future stock changes are communicated between both platforms.

Before you connect
Your Shopify eCommerce plan must support inventory tracking and third-party apps. Your Square POS plan must also support inventory tracking and third-party apps.
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Shopify & Square integration FAQs
Not natively in the way most retailers need for connected inventory. SKU IQ connects Square POS and Shopify eCommerce so quantities stay unified and up to date, and supported product attributes can sync uni- or bi-directionally. See the sync table above for pair-specific fields.
Connect both platforms in SKU IQ, then run a Link Report to match your existing products by title, SKU, or UPC. Products must have the same structure on both platforms to match; a non-variable item will not match a variable set. Confirm the matches and syncing begins. If products exist on only one platform, push them across instead. This creates a copy of the item on the other platform and links it to the original item.
No. Title/name matching works when spelling is identical. SKUs and UPCs make matching more reliable, but they are not required. Items must share the same structure to link.
Yes. SKU IQ sits between Square POS and Shopify eCommerce as a connection layer, so you can keep using both systems.
No. SKU IQ connects the existing Square POS to Shopify eCommerce. Pushing a catalogue copies products and establishes a syncing relationship; it does not move you off either platform.
Yes. For Square POS and Shopify eCommerce, images can sync uni- or bi-directionally, but they cannot update to a new image after the first upload.
No. SKU IQ reads both catalogues and shows proposed matches in the Link Report. Nothing changes until you confirm what to link or push.
It is usually because titles differ between platforms, the product structure is different between platforms, or the product exists on only one side. Fix spelling to match, ensure the same structure, or push it across to create the missing copy.
Yes. Start a free trial and connect both platforms to see the Link Report before committing. During the trial, customers are limited to 50 product pushes, and bulk pushes are available for larger catalogues for a one-time fee; contact Support for a quote.
How much does the Square – Shopify integration cost?
Every SKU IQ plan keeps inventory quantities unified and up to date between Square POS and Shopify eCommerce with unlimited linked items. Higher tiers add product attribute syncing and faster sync for larger catalogues.


