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What is Square

Square is a combined payments processor and point-of-sale platform that offers hardware, software, and financial products for merchants. Its core functions include accepting payments in person and online, running point-of-sale systems, managing staff and appointments, and providing banking and lending options to help cash flow.

Square competes with standalone payment processors and POS vendors such as Stripe, Shopify, and Toast. Compared with Stripe, Square bundles physical hardware and consumer-ready POS software in one vendor relationship, while Stripe focuses on developer-first online payments. Compared with Shopify, Square places more emphasis on in-person retail and restaurant workflows and sells dedicated terminals and registers. Compared with Toast, Square provides a broader set of small-business tools beyond restaurants, including payroll, banking, and retail inventory features.

All of this makes Square especially well suited for small and medium-sized merchants that want a single vendor for payments, POS, hardware, and back-office operations. It is a practical choice for single-location shops, mobile sellers, and multi-location chains that need quick setup and out-of-the-box integrations.

How Square Works

Square combines a cloud-based POS and business dashboard with purpose-built hardware and integrated payments. Merchants install Square’s POS app on Square hardware or compatible devices, configure items and pricing, and accept payments using Square Readers, Terminals, or a Square Register.

Transactions flow through Square’s payment platform into a merchant balance that can be moved to Square Checking, paid out to a bank, or used for Square lending products. The Square Dashboard consolidates sales, inventory, staff shifts, and customer data so merchants can track performance and act on insights.

Square also exposes developer APIs and an app marketplace so businesses can extend workflows, connect accounting systems, or embed online ordering and invoices into existing sites. For many businesses the implementation is plug-and-play; for custom needs developers can use the Square developer tools to build integrations and custom storefront experiences.

Square features

Square’s platform centers on payments and a unified point-of-sale experience, with add-on modules for staff management, customer engagement, and finance. Recent product directions expand Square AI and deeper reporting to simplify decision making across operations.

Here are some key features worth highlighting:

Point of Sale

Square’s POS app supports in-person sales, modifiers, item variants, quick taps for common orders, and custom receipts. It is available on Square Register, Square Terminal, Square Stand, and mobile readers, allowing consistent checkout processes across locations.

Payments and Invoicing

Merchants can accept card-present and card-not-present payments, create and send invoices, and enable online ordering profiles linked to their POS. This centralizes payments and sales reporting so in-person and online revenue appears in one dashboard.

Hardware Options

Square sells a range of hardware including readers for contactless and chip, terminals with receipt printing, handheld POS, and a compact register. Hardware choices let businesses match checkout ergonomics to their venue, whether countertop, table service, or mobile sales.

Team and Payroll Management

Scheduling, time tracking, and payroll tools integrate with sales data so managers can plan shifts and calculate payroll costs against revenue. That reduces manual reconciliation and helps teams manage labor efficiently.

Customers, Marketing and Loyalty

Built-in tools let merchants collect customer contacts, run automated campaigns, and set up loyalty programs tied to purchases. This helps increase repeat visits and measure campaign ROI from the same dashboard where sales are tracked.

Banking and Financing

Square offers deposit accounts, instant access to funds generated through processing, debit cards, and small-business loans. These options help merchants manage cash flow and access working capital without contacting separate financial providers.

Developer APIs and Integrations

Square publishes developer APIs and an app marketplace to connect with accounting, inventory, and online commerce tools. This lets businesses automate workflows, export data, and add custom front- or back-office capabilities.

With these capabilities combined, Square helps merchants run payments and operations from one platform, reducing the number of disconnected tools and the manual work of reconciling sales, staff, and customer data.

Square pricing

Square uses a fee-based payments model together with one-time and installment prices for hardware. Core Square POS software is available without a long-term contract, while payment processing carries per-transaction fees. Hardware devices are sold outright or via installment plans.

Hardware pricing examples

Square Register (2nd generation) – $899 or $44/mo over 24 months (credit plans issued by Block, Inc.).

Square Handheld – $399 or $37/mo over 12 months.

Square Terminal – $299 or $27/mo over 12 months.

Square Stand – $149 or $14/mo over 12 months.

Square Reader for contactless and chip – $59.

Payment processing and software fees

Square’s payment processing and software fees are transaction and product dependent; merchants pay per-transaction processing fees for card acceptance and may pay recurring fees for optional subscriptions such as payroll or advanced POS features. For detailed processing and software pricing see Square’s processing and software pricing information.

Enterprise and custom pricing

Larger merchants or customized deployments can work with Square sales for tailored solutions and volume pricing. Contact Square via their contact sales page to discuss enterprise arrangements and hardware fleets.

What is Square Used For?

Square is used to accept payments and manage day-to-day retail and restaurant operations, including front-of-house checkout, inventory tracking, and online ordering. Merchants use it to unify in-person and online sales reporting and to run loyalty and marketing programs tied to purchase behavior.

Businesses also use Square for staff management, payroll, and financial services such as deposit accounts and small-business loans, which helps reconcile cash flow without moving between multiple service providers. Developers and integrations extend Square for custom e-commerce, accounting, and fulfillment workflows.

Pros and Cons of Square

Pros

  • Integrated hardware and software: Square combines POS software with purpose-built terminals, readers, and registers so setup is faster and vendor management is simpler.
  • Broad small-business feature set: Reporting, payroll, marketing, and banking sit alongside payments, reducing the need for separate subscriptions and manual reconciliation.
  • App ecosystem and APIs: A developer-friendly API and app marketplace make it straightforward to connect Square to accounting systems, e-commerce platforms, and custom apps.

Cons

  • Processing fees: Like other payment processors, transaction fees apply and can add up for high-volume merchants; large enterprises may find bespoke pricing necessary.
  • Advanced features may require add-ons: Some advanced capabilities, such as premium payroll or enhanced reporting, are available as paid add-ons which increase overall cost.

Does Square Offer a Free Trial?

Square offers free core POS software and free developer access, with paid subscriptions and trials for certain premium services. The basic Square POS app is available at no monthly charge, letting merchants accept payments and use basic reporting without a subscription; paid add-ons and subscriptions such as payroll or advanced marketing usually include trial periods or modular sign-up options. See Square’s pricing and product pages for current trial and subscription details.

Square API and Integrations

Square provides a developer platform with REST APIs for payments, orders, customers, inventory, and more. The Square developer documentation lists endpoints, SDKs, and guides for building custom integrations, embedding online payments, and connecting third-party apps.

Square also integrates with a wide range of third-party tools including accounting systems, e-commerce platforms, delivery partners, and marketing apps via the Square App Marketplace to cover common workflows without custom development.

10 Square alternatives

Paid alternatives to Square

  • Stripe — A developer-first payments platform that focuses on online and in-app payments, with extensive APIs and global payment methods.
  • PayPal — Payments and merchant services covering online invoicing, hosted checkout, and small-business tools with broad consumer recognition.
  • Shopify — An e-commerce-first platform that offers POS hardware and retail features tightly integrated with online stores and multichannel selling.
  • Toast — Restaurant-focused POS and payments platform with menu management, table service workflows, and restaurant-specific reporting.
  • Clover — An all-in-one POS provider with configurable hardware and an app marketplace for retail and hospitality needs.
  • Lightspeed — A retail- and hospitality-oriented POS with advanced inventory, reporting, and omnichannel commerce tools.
  • Revel Systems — An iPad-based POS with strong enterprise features for multi-location restaurants and retailers.

Open source alternatives to Square

  • Odoo — An open-source ERP with POS, inventory, and accounting modules that can be self-hosted and customized for retail and restaurants.
  • uniCenta — A free, open-source POS system that supports multi-terminal retail environments and integrates with databases for inventory and sales reporting.
  • Chromis POS — An open-source point-of-sale system with touchscreen support and basic inventory features suitable for small retailers and hospitality venues.
  • PrestaShop — An open-source e-commerce platform that can be extended with POS modules and integrated with payment providers for a custom storefront solution.

Frequently asked questions about Square

What types of businesses can use Square?

Square supports a wide range of businesses including restaurants, retail stores, salons, and service providers. Its hardware and software options are designed to accommodate single-location shops, mobile sellers, and multi-location operations.

Does Square charge monthly fees for point-of-sale software?

Square offers a free core POS app with optional paid add-ons. Advanced modules like payroll, marketing subscriptions, or premium reporting may carry monthly fees depending on the features selected.

Can Square process online payments as well as in-person sales?

Yes, Square processes both in-person and online payments and consolidates reporting. Merchants can use online ordering profiles, invoices, and e-commerce integrations alongside physical terminals and readers.

Does Square provide APIs for developers?

Yes, Square provides developer APIs and SDKs for payments, orders, inventory, and customers. The developer documentation includes guides, SDKs, and reference endpoints for building integrations.

Is Square suitable for multi-location businesses?

Square can scale to multi-location businesses with centralized reporting and device management. Larger deployments may use Square’s enterprise sales channel for volume pricing and hardware fleet management.

Final verdict: Square

Square is a practical, integrated choice for merchants that want a single provider for payments, point-of-sale, hardware, and core business operations. Its strength is simplifying the front- and back-office workflows for small and medium businesses with ready-to-use hardware options and an expanding set of services such as payroll, banking, and marketing.

Compared with Stripe, which is primarily a payments API provider focused on online commerce, Square bundles physical hardware and consumer-ready POS software with transparent hardware pricing such as the Square Register for $899 and affordable readers like the Square Reader for contactless and chip at $59. For merchants that prioritize quick setup and an integrated stack including staff management and banking, Square delivers broader out-of-the-box functionality; for developer-first, custom online payment flows, Stripe remains a strong alternative.

Overall, Square is well suited for businesses that want to reduce tool sprawl by consolidating payments, POS, staff, and financial services under one vendor while retaining options for developer customization and third-party integrations.