Shopify POS vs Lightspeed Retail vs Square for Retail: 11 Best POS Systems for Retail 2026

Best for omnichannel sales

Shopify POS (#1, 9.2/9.4). The top choice for unified online and in-store sales, especially for existing Shopify users. It also handles unified inventory.

Best for complex inventory management

Lightspeed Retail (#2, 9.0/9.4). Unmatched inventory management for retailers with thousands of SKUs or complex product types. It also handles multi-store reporting.

Best for low startup cost

Square for Retail (#3, 8.8/9.4). The top choice for new retailers due to its powerful free plan and simple setup. It also handles simple checkout process.

How do you evaluate a retail POS system?

Evaluate a retail POS by first defining your core need: is it complex inventory, omnichannel sales, or simple in-person transactions? Then, assess candidates on their ability to manage your specific inventory type (e.g., variants, bundles), their payment processing rates and hardware costs, and their integrations with your existing accounting or marketing software. Always request a demo to test the user interface for speed and ease of use.

What's the difference between a POS and a simple payment processor?

A payment processor simply facilitates a transaction, while a POS system is a complete hub for managing your business. A POS includes payment processing but adds critical functions like inventory management, customer relationship management (CRM), sales reporting, and employee tracking. For any retail store with inventory, a full POS system is necessary.

How to choose

1. 1Map your inventory complexity. If you have thousands of SKUs with many variations (size, color), prioritize systems like Lightspeed with advanced inventory features.
2. 2Decide on your omnichannel strategy. If selling online is a priority, a system like Shopify POS with native e-commerce integration is the most direct path.
3. 3Calculate the total cost of ownership. Factor in monthly software fees, payment processing rates (e.g., 2.6% + 10¢ per transaction), and one-time hardware costs.
4. 4Check for key integrations. Ensure the POS connects to your accounting software (like QuickBooks or Xero) to avoid manual data entry.

What is the best POS system for a small retail business?

Square for Retail is the best POS system for most small retail businesses because it offers a feature-rich free plan, simple flat-rate payment processing, and affordable, easy-to-use hardware. This combination minimizes upfront costs and complexity for new store owners.

How much does a retail POS system cost?

A retail POS system can cost anywhere from $0 per month for basic software to over $300 per month per location for advanced enterprise plans. On top of the software fee, expect to pay payment processing fees of around 2.5% to 2.9% per transaction and initial hardware costs from $49 for a card reader to over $1,200 for a full register kit.

Can I use an iPad as a POS system?

Yes, you can use an iPad as a POS system. Most modern POS providers, including Shopify, Square, and Lightspeed, offer dedicated iPad apps that turn the device into a fully functional sales terminal when paired with a card reader and receipt printer.

Do I need a special POS for selling both in-store and online?

Yes, for selling both in-store and online you need an omnichannel POS system that automatically syncs inventory and sales data across both channels. Systems like Shopify POS and Lightspeed Retail are built specifically for this purpose, preventing you from selling out-of-stock items online that were just sold in your physical store.