How to Connect Square to Your eCommerce Platform (Step-by-Step Guide)

Connecting Square to your eCommerce platform allows you to accept online payments, synchronize inventory, manage orders, and keep sales data consistent across your online store and Square POS. 

Statista says 7 out of 10 websites using Square as a checkout option are from America or Canada. 

Whether you run a WooCommerce, Shopify, BigCommerce, Magento, or Drupal Commerce store, the right integration helps automate daily operations while reducing manual work. 

This guide explains how to connect Square to the most popular eCommerce platforms, what you need before getting started, and how to choose the best integration for your business.

Why Connect Square to Your eCommerce Store?

When you integrate Square with your eCommerce store, you can benefit from numerous benefits that can help your business grow. The following are some ways it can help your business grow:

• Simple Integration: Square can integrate not only with your eCommerce store but also with multiple eCommerce platforms, making setup extremely simple.
• Unified Payments: Manage both online and offline transactions through a single platform, making your financial management much easier.
• Real-Time Inventory Syncing: Automatically synchronize inventory between your online store and Square POS to reduce overselling and improve accuracy.
• Comprehensive Reporting: Access detailed reports that cover both online and offline sales, helping you make informed business decisions.
• Accept Multiple Payment Methods: Accept multiple payment methods, including credit cards, Google Pay, and Apple Pay, to provide convenience for your customers.
• Enhanced Security: Square encrypts payment data, supports PCI DSS compliance, and includes fraud detection tools to help protect businesses and customers.
• International Customer Support: Businesses in supported Square countries can accept payments from customers worldwide, although merchant accounts are currently available only in selected regions.

How Do Square Integrations Work?

Square integrations connect your Square account with third-party business applications, allowing data to move automatically between systems. Instead of manually updating sales, inventory, customer information, or accounting records, integrated software keeps your business data synchronized in real time or at scheduled intervals.

For example, when a customer places an order through your eCommerce store, a Square integration can automatically:

• Process the payment through Square.
• Update inventory levels across connected sales channels.
• Record the transaction in your accounting software.
• Sync customer information with your CRM or marketing platform.
• Generate reports for better business insights.

This automation reduces manual data entry, minimizes errors, and helps business owners manage operations more efficiently. Choosing the right approach depends on your business size, technical requirements, and the software you already use.

What You Need Before Connecting Square 

Before connecting Square with another application, make sure you have the following:

1. Check Country Availability

Square is currently available only in selected countries, including Australia, Canada, France, Ireland, Japan, Spain, the United Kingdom, and the United States. Verify that your business location supports Square merchant accounts before starting the integration.

2. Create an Active Square Account

Ensure your Square account is active, verified, and that you have administrator access.

3. Check Software Compatibility

Confirm that the application you want to connect supports Square integration.

4. Review Required Permissions

Be prepared to grant access to data such as payments, orders, inventory, or customers, depending on the integration.

5. Ensure a Stable Internet Connection

A reliable internet connection helps maintain smooth and accurate data synchronization.

6. Prepare API Credentials (If Needed)

If you’re building a custom integration, have your Square API credentials and developer account ready.

7. Backup Your Data

Create a backup of your existing business data before starting the integration to avoid potential data loss.

How to Choose the Right Integration

Every business has different operational requirements. Before choosing a Square integration, evaluate how it fits your existing software, payment workflow, and long-term growth plans.

1. Determine what you want the integration to do, such as syncing inventory, managing orders, processing payments, or automating accounting.
2. Double-check that your system is compatible with your existing software and business tools.
3. Choose a solution that automates tasks like inventory updates, order syncing, customer management, and reporting.
4. Select an integration that can support your business as it grows and your operational needs increase.
5. Look for integrations that use secure authentication and follow industry standards to protect your business and customer data.
6. Review the total cost, available documentation, and customer support to ensure the integration provides long-term value.

Which eCommerce Platforms Support Square?

Square supports integrations with many popular eCommerce platforms through native integrations, third-party apps, and the Square App Marketplace. The available integration method depends on the platform you use. Some platforms offer built-in Square support, while others require a plugin or extension to connect payments, synchronize inventory, and manage orders.

The following platforms are among the most popular options for connecting Square to an online store.

eCommerce Platform	Native Integration	Third-Party Integration	Inventory Sync
WooCommerce	✓	✓	✓
Shopify	✗	✓	✓
BigCommerce	✓	✓	✓
Magento	✗	✓	✓
Drupal Commerce	✗	✓	✓

Regardless of the platform you choose, integrating Square helps you process online payments, synchronize inventory between your online store and Square POS, manage orders more efficiently, and keep your business data up to date. 

In the following sections, we’ll walk you through the setup process for each supported platform step by step.

1. How to Connect Square with Shopify

Follow these steps to connect Square payments to your Shopify store:

Step #1: Install AutoSync for the Square App

• Log in to your Shopify store.
• Navigate to “Apps” in the sidebar menu.
• Click on “Customize your store” to access the Shopify app store.
• Search for “Square” and select the “AutoSync for Square” App.
• Click “Add app” and then “Install app” to integrate Square with your Shopify store.

Step #2: Connect to the Square Account

• Click on “Connect Square.”
• Log in to your Square account and grant permission to access Shopify data.
• Ensure that the products in Shopify and Square have matching SKU numbers to sync them effectively.

2. How to Connect Square with BigCommerce

Follow these steps to connect Square to your BigCommerce store and start accepting online payments.

Step 1: Open Your Payment Settings

Sign in to your BigCommerce admin dashboard. From the left navigation menu, go to Store Setup and select Payments.

Step 2: Enable Square as a Payment Provider

Browse the available payment providers and locate Square. If it appears in the recommended payment methods, click Get Started. Otherwise, scroll to the Other Online Payments section and select Set Up next to Square.

Step 3: Connect Your Square Account

Click Connect Square Account, then sign in with your Square account credentials. Review the requested permissions and click Allow to authorize the connection between BigCommerce and Square.

Once the setup is complete, your BigCommerce store can securely process payments through Square. Depending on your integration settings, you can also synchronize inventory and sales data between your online store and your Square account.

3. How to Connect Square with WooCommerce

To connect Square payments to your WooCommerce store, follow these steps:

Step #1: Install and Configure WC Shop Sync Plugin 

• Log in to your WordPress admin panel and navigate to Plugins >> Add New Plugin.
• Search for the WC Shop Sync plugin.
• Next, click Install Now, then activate the plugin.

Step #2: Connect Your Square Seller Account 

• Click “Connect with Square” in the plugin settings.
• Log in to your Square account and grant the necessary permissions.

Step #3: Set Up Square Payments

• In your WooCommerce admin panel, navigate to WC Shop Sync > Access Your Module.
• Enable the Square Payment Gateway, customize your payment settings, and save changes.

Now, your WooCommerce store will be fully integrated with Square, allowing you to manage payments efficiently.

4. How to Connect Square with Magento

Integrating Square with Magento requires the following steps:

Step #1: Choose a Square-Magento Integration

• Select an integration from NVNCBL or Open Professional Group (OPG) based on your Magento version.

Step #2: Install the Integration

• Purchase the integration and download the relevant files.
• Follow the installation guide provided by NVNCBL or OPG, or have a developer assist with the setup.

Step #3: Connect Square Account

• Log in to your Square account during the integration setup process and authorize the connection.

With this setup, you can manage payments and sync data between Square and Magento, including product catalog and inventory counts.

5. How to Connect Square with Drupal Commerce

To integrate Square with Drupal Commerce, follow these steps:

Step 1: Log in to Drupal Commerce

• Access your Drupal dashboard and navigate to Commerce → Configuration → Add Payment Gateway.

Step 2: Select Square as Your Payment Gateway

• Choose Square from the list of pre-installed payment gateways.

Step 3: Connect to Square

• Sign in to your Square Seller account when prompted and click “Allow” to grant permissions.

Your Drupal Commerce store is now connected to Square, enabling you to accept payments seamlessly.

Which Square Integration Is Best?

A custom Square integration is often the best choice for businesses that require flexibility, automation, and seamless data synchronization across multiple systems. If your requirements are simple, native integrations offer a faster, more affordable setup.

Integration Type	Best For	Key Benefit
Custom Integration	Growing and enterprise businesses	Tailored workflows and advanced automation
Native Integration	Small businesses	Quick setup with minimal configuration
Middleware Integration	Businesses using multiple apps	Connects Square with various platforms without custom development
API Integration	Developers and tech teams	Full control over features and data synchronization

Use WP EasyPay to Connect Square with WordPress

Connecting Square to your eCommerce platform helps streamline payment processing, reduce manual work, and create a better checkout experience for your customers. Whether you choose a native integration, middleware, or a custom solution, the right setup depends on your business goals and the features you need.

If you’re using WordPress and simply want to accept secure Square payments without the complexity of a full eCommerce store, WP EasyPay is a practical solution. It lets you create customizable payment forms for services, donations, deposits, and one-time or recurring payments, making it ideal for businesses focused on collecting payments rather than managing products and inventory.

Need help getting started? Our support team is here to help you connect Square with your WordPress or WooCommerce website and ensure everything is set up correctly

Frequently Asked Questions