Square Online Payments

Online payment tools from Square for ecommerce checkout, invoices, payment links, subscriptions, virtual terminal transactions, and developer APIs.

Last reviewed: 2026-07-21

Square Online Payments website screenshot — Website screenshot captured 2026-07-21. Visit the vendor website to confirm current product details, pricing, and availability.

Overview

Online payment tools from Square for ecommerce checkout, invoices, payment links, subscriptions, virtual terminal transactions, and developer APIs.

Best for

Small and midsize merchants that want online payments connected to Square's POS, customer, inventory, and reporting ecosystem.

Not ideal for

Large international businesses that need highly customized acquiring arrangements across many countries and legal entities.

Key features

Online checkout

Payment links

Invoices

Subscriptions

Payments APIs

Integrations

Confirm current integration depth with the vendor before buying. Listed integrations are a starting point for research, not a complete implementation guarantee.

Square POSSquare OnlineWooCommerceWixDeveloper APIs

Pricing summary

Square's basic payment tools generally use transaction-based pricing without a monthly processing subscription. Paid software plans, hardware, keyed payments, disputes, and optional services can add cost.

Free trial

Not applicable

Free plan

Yes

Pros and cons

Pros

Connected online and in-person ecosystem
No monthly fee for basic payment processing
Multiple no-code and API payment paths

Cons

Processing rates vary by transaction type
Advanced software costs extra
International availability is limited by Square market coverage

Alternatives

Stripe PaymentsPayment platform with hosted, embedded, no-code, and API-based paths for accepting online and in-person payments.PayPal CheckoutOnline checkout product for accepting PayPal payments, major cards, and eligible alternative methods through hosted, platform, API, or no-code paths.AdyenGlobal payment platform for accepting online, in-app, and in-person payments across cards, wallets, local methods, acquiring, risk, and reporting workflows.Authorize.netPayment gateway and optional bundled merchant-account service for accepting cards, digital wallets, eCheck payments, recurring billing, invoices, and virtual-terminal transactions.PayPal BraintreePayPal payment-gateway platform for cards, PayPal, Venmo, digital wallets, recurring billing, marketplace payments, and developer-led checkout integrations.Checkout.comGlobal payment platform for card acquiring, alternative payment methods, payouts, fraud tools, payment optimization, and unified reporting.WorldpayGlobal merchant-acquiring and payment platform for ecommerce, in-person payments, alternative methods, fraud management, and enterprise payment operations.MollieEuropean payment service provider for cards, bank payments, local methods, recurring payments, payment links, invoicing, and marketplace flows.Amazon PayDigital-wallet checkout that lets shoppers use payment and address details from their Amazon account on participating merchant websites.