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Square Online review (2026)
Vendor: Square · Reviewed: 2026-05-11
Square Online is square ecommerce builder plus payment processing. Bundled with Square Terminal for omnichannel SMBs. Square Online combines an ecommerce store builder (templates, hosting, inventory sync) with Square's payment processing. Designed for SMBs who already use Square Terminal in person and want a website that shares the same inventory and customer database.
Editorial review in progress
Hands-on test of Square Online is scheduled. This page covers public-knowledge UK specifics: pricing, SCA handling, setup, pros and cons. We will add a verdict and overall rating after the hands-on test completes.
Who Square Online is best for
- UK SMBs already using Square Terminal in person
- Click-and-collect retailers (Square Online + Square Terminal share inventory)
- Restaurants offering online ordering + in-person dining (Square for Restaurants integration)
- Sole traders wanting a no-code store and POS in one stack
Who should not use Square Online
- Stores needing advanced ecommerce features (Shopify, WooCommerce, BigCommerce better)
- High-volume merchants above £50k monthly (rate becomes uncompetitive)
- Multi-warehouse or international fulfilment
- High-risk verticals (declined)
UK pricing
1.4% + 25p UK online (card-not-present) at standard tier. AMEX 2.5%. Online store free; Plus plan £20/month adds custom domain features; Premium £65/month adds advanced shipping. No monthly Square Terminal fee on the standalone product.
UK specifics: Square UK Limited (Companies House 09486375) is the UK acquiring entity. Settlement to UK business bank account, next business day standard. Inventory syncs between Square Online and Square Terminal automatically.
Recommended plan: Standalone Square Online for sub-£30k monthly. Square Plus for custom-domain stores.
Pros
- +Tight integration with Square Terminal in-person
- +Shared inventory across online + in-person
- +Square Restaurants integration for hospitality
- +No monthly fee on standalone tier
- +Square Loyalty and Marketing integrate cleanly
Cons
- ,1.4% + 25p uncompetitive above £50k monthly online volume
- ,Less customisable than Shopify or WooCommerce
- ,Square-ecosystem lock-in
- ,No high-risk vertical support
SCA / 3D Secure 2 support
SCA via 3D Secure 2 handled automatically.
Setup complexity
Lowest. Drag-and-drop store builder. No developer required.
Competitors and alternatives
Direct UK competitors to Square Online: Shopify Payments, Stripe Checkout, GoDaddy Payments, Wix Payments.
FAQs
What is Square Online?
Square Online combines an ecommerce store builder (templates, hosting, inventory sync) with Square's payment processing. Designed for SMBs who already use Square Terminal in person and want a website that shares the same inventory and customer database.
Who is Square Online best for in the UK?
Square Online is best for: UK SMBs already using Square Terminal in person; Click-and-collect retailers (Square Online + Square Terminal share inventory); Restaurants offering online ordering + in-person dining (Square for Restaurants integration); Sole traders wanting a no-code store and POS in one stack.
Who should not use Square Online?
Square Online is not the right fit for: Stores needing advanced ecommerce features (Shopify, WooCommerce, BigCommerce better); High-volume merchants above £50k monthly (rate becomes uncompetitive); Multi-warehouse or international fulfilment; High-risk verticals (declined).
How much does Square Online cost in the UK?
1.4% + 25p UK online (card-not-present) at standard tier. AMEX 2.5%. Online store free; Plus plan £20/month adds custom domain features; Premium £65/month adds advanced shipping. No monthly Square Terminal fee on the standalone product.
Does Square Online handle SCA / 3D Secure 2?
SCA via 3D Secure 2 handled automatically.
How long does Square Online take to set up?
Lowest. Drag-and-drop store builder. No developer required.
Does Square Online work for both online and in-person payments?
Yes. Square runs an omnichannel acquirer setup: Square Online for online plus the Square terminal for in-person, sharing one merchant agreement.
What are the alternatives to Square Online?
Direct competitors in the UK market: Shopify Payments, Stripe Checkout, GoDaddy Payments, Wix Payments.
Reviewed by Oliver Mackman, Director. Last reviewed: 2026-05-11.