How to Integrate Shopify and Square: A Guide for Sellers

Mar 26, 2025
Shopify and Square are two powerful tools for businesses. But if you sell both online and in-store, managing them separately can lead to inventory mismatches, payment issues, and extra work.
By integrating Shopify and Square, you can connect Square to your Shopify store to sync inventory in real-time, streamline transactions, and centralize reporting, ensuring a smooth experience for both you and your customers.
Why Integrate Shopify and Square?
If you’re selling both online and in-store, keeping everything in sync can be a challenge. Integrating Shopify and Square helps streamline your operations by:
Real-Time Inventory and Order Updates: Integrating Square with Shopify keeps inventory accurate by automatically updating stock levels across both platforms. This prevents overselling and reduces the need for manual adjustments.
Simplified Product Management: Any modifications to product details—such as prices, descriptions, or stock availability—sync instantly between Shopify and Square, ensuring consistency across all sales channels without extra effort.
Optimized Order Processing: Shopify orders are automatically transferred to Square, improving fulfillment efficiency and minimizing delays. This removes the need for duplicate entries and keeps order tracking centralized.
Understanding Shopify & Square Compatibility
Shopify and Square don’t offer a built-in integration, meaning they don’t automatically sync with each other. However, you can still achieve a square integration using:
Third-party apps – Tools like QuickSync help sync inventory, sales, and customer data between both platforms.
Custom solutions – If you have unique business needs, a developer can create an API integration tailored to your setup.
Choosing the right method depends on your business size, budget, and how much automation you need.
Using Third-Party Apps for Easy Integration
Third-party apps like QuickSync, available in the Shopify App Store, make it simple to connect Shopify and Square without manual work. These tools automate key processes, ensuring your online and in-store sales stay in sync.
Key Features to Look For:
Inventory Sync – Automatically updates stock levels across both platforms.
Order Management – Syncs orders between Shopify and Square for seamless fulfillment.
Product Sync – Keeps product details, such as names, descriptions, and prices, consistent.
A third-party app saves time, reduces errors, and streamlines your business operations—so you can focus on growth instead of managing multiple systems manually.
Steps to Install and Set Up an Integration App
Step 1: Connect Shopify and Square to QuickSync
1. Log in to QuickSync:
• Go to QuickSync.pro and log in with your credentials.
2. Integrate Shopify:
• Navigate to Settings > Integrations > Shopify.
• Enter your Shopify store URL and follow the prompts to authorize QuickSync to access it.
3. Integrate Square:
• Navigate to Settings → Integrations → Square.
• Log in to your Square account and authorize QuickSync to access it.
Once connected, QuickSync will begin syncing data between Shopify and Square based on your selected settings.
Step 2: Configure Syncing Preferences
1. Enable Inventory Syncing:
• In the QuickSync dashboard, turn on Inventory Syncing to keep stock levels updated across Shopify and Square.
2. Enable Product Syncing:
• Toggle on Product Syncing to sync product details, such as names, descriptions, prices, images, and SKUs, between platforms.
• You can designate Shopify or Square as the Master Store for product updates.
3. Enable Order Syncing (Optional):
• Choose to sync orders from Shopify to Square for centralized fulfillment.
• Select a fulfillment store where orders will be processed (currently only Shopify can be a fulfillment store).
4. Selective Syncing:
• Use QuickSync’s Selective Syncing feature to sync specific products, categories, or locations based on your business needs.
Custom API Solutions for Advanced Users: Square Payment Gateway
For businesses with unique needs, a custom API integration might be the best option. Unlike third-party apps, APIs offer complete control over how Shopify and Square sync, automating inventory, order management, and product updates in real time.
This is ideal for businesses with complex workflows, specialized pricing structures, or high-volume sales. However, custom integrations require technical expertise and can be costly to develop.
Hiring a developer ensures a tailored solution, but it may take time to implement. If flexibility and automation are top priorities, a custom API can provide a powerful, long-term syncing solution.
Choosing the Best Integration Method
When selecting the right way to integrate Shopify and Square, consider ease of use, cost, features, and scalability. A Square Shopify integration can be achieved through third-party apps like QuickSync or custom API solutions. These integrations enhance sales by combining the functionalities of both platforms.
Manual syncing is a low-cost option but requires constant updates, making it inefficient for growing businesses. Custom API solutions provide the most flexibility and automation but require higher upfront costs and technical expertise. Small businesses may benefit from third-party apps, while larger or more complex operations might prefer a custom API for a tailored solution.
Why Integrate Shopify and Square with QuickSync?
By integrating Shopify and Square, you can centralize inventory management by syncing stock levels in real time to prevent overselling or stockouts, streamline product updates by automatically syncing prices, descriptions, and images across both platforms, simplify order management by transferring Shopify orders to Square for in-store fulfillment or consolidating Square orders into Shopify, and enhance efficiency by automating data syncing to minimize manual errors and save time.
Final Thoughts: Streamline Your Shopify & Square Workflow
Integrating Shopify and Square helps keep inventory accurate, simplifies order management, and provides a seamless shopping experience for customers, whether they are shopping at your online store or physical location.
Choosing the right syncing method—whether through a third-party app or a custom API—can save time and reduce manual work. Explore the best solution for your business needs and take the next step toward a more efficient, hassle-free workflow.
Ready to simplify your operations? Try a syncing tool or consult an expert today!
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