Square Developer

Integrate Square into your apps.

Square Developer

Securely take payments everywhere with a single platform.

Omnichannel, multichannel, call it what you want. Take payments wherever your customers are.

Take in-person payments

Build a custom point of sale and connect Square hardware.

NEW: Take in-app payments.

Customize the payment form UX to fit your mobile app’s look and feel.

Take online payments.

Go fully customizable, or quickly embed a checkout experience into a website.

Rely on the payment platform that has processed billions of transactions.

PCI and EMV compliance

Our hardware is compliant with EMV regulations and we take on the burden of staying PCI compliant, which means you don’t have to worry about assessment fees or potential expensive data breach fines.

End-to-end encryption

From the time the customer dips or swipes a credit card, the data is encrypted until it reaches Square’s processing environment. Customer data never touches the seller’s servers. And it’s all preconfigured, with no additional steps necessary.

Dispute management

We have a dedicated disputes team to deal with your credit card issuer for you. We’ll ask for the documentation we need and take care of the rest with no additional fees.

Fast deposits

Get your money faster with Square’s deposits as soon as the next business day.

Fraud detection

We use machine learning to analyze every payment in our ecosystem. It enables us to prevent fraud on sellers’ behalf, regardless of the payment volume they are processing.

Do more than take payments.

Understand your customers, sales, inventory, and more.

Easily make informed decisions with a complete view of your inventory, customers, and products across all of your online, in-app and in-person sales.

Integrate with existing business systems.

Transfer payments data into a CRM, OMS, ERP, or any enterprise business solution.

Create unlimited solutions including:

  • Order-ahead apps
  • Online checkout experiences
  • Line-busting mobile solutions
  • Customer management solutions
  • Custom points of sale
  • Self-service kiosks
“Square offers us a way to think outside the box in terms of what’s possible for transactions and experiences in-Shack. We’re freed from the restrictions put on us by legacy products, and the Square suite of tools enables a variety of new opportunities.”

– Anoop Pillarisetti, Digital Product & Strategy at Shake Shack

Shake Shack built a self-service kiosk application, powered by Square Reader SDK, that streamlined the in-store ordering process.

Square APIs and SDKs are free for developers to use.

Square charges a processing fee on credit and debit transactions.

In-Person Transactions



In-App Transactions


Per transaction (VMA Only)

Online Transactions


Per transaction



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