Square Connect and Transactions API FAQs

As a Square merchant, you can pull your account data into your own apps with the Square Connect API, or connect a partner app from the Square App Marketplace to help you manage your business.

Getting Started

How does Square’s Transactions API work?

Square’s Transactions API is a payment solution that allows you to accept credit and debit card payments from your own website. Connect your website to Square with an eCommerce API application, and without ever leaving your website, customers can securely make online purchases. Payment processing is completed entirely through Square, so you’ll never need to handle sensitive payment card data.

Is the Transactions API a good fit for my business?

If you’re a Square merchant and host your own website, the API is a great option to streamline all your sales channels. We recommend working with a website developer to get set up.

How do I get started?

Visit the getting started guide to learn how to set up your application and start accepting payments through your website.

What is a personal access token?

This is a code your application uses to communicate with Square for processing payments. If you’re working with a trusted developer, you may want to share your personal access token to help create your API application, but keep in mind that you’re token is sensitive account information, similar to your Square account password.

Payments & Fees

What are the fees for Square’s API?

A fee of 2.2% is applied to payments processed through Square’s Transactions API.

Can I use Card on File with the Transactions API?

Yes – you can save customer and payment information to your Customer Directory for future charges.

Sales & Reporting

How do payments and reporting work?

Payments processed with Square’s API appear in your transaction history from your online Dashboard. For easy identification, payments are labeled as “Online Transaction”.

Refunds can be processed from the Square app or your Dashboard. Just like the Square app, payments are sent to your linked bank account following your regular deposit schedule.

Note: API payments are not itemised in your transaction history.

What currency will sales be processed in?

Although you are able to accept international cards with Square’s Transactions API, all payments will be processed in AU dollars.

Manage API Access

How do I uninstall an App?

Once you’ve connected an app to your Square account, you can manage connection settings online:

  1. Visit Apps in your online Square Dashboard > click My Apps.
  2. Locate the app you’d like to disconnect. Click the X and confirm you’d like to revoke access to your Square account.

Best Practices

What kind of best practices should I follow when using the Transactions API?

It’s important to take additional precautions with eCommerce orders to prevent fraud and disputes. Review a full list of best practices.