Square
Square is a payment service provider best known for combining card processing with point-of-sale hardware, used widely by small and mid-sized merchants for both in-person and online payments. It lets merchants accept all major card networks through a single account, with optional ACH bank debits and in-person acceptance via Square terminals. Square is strongest in the United States but also operates across several other markets. Shuttle connects to Square over OAuth, so merchants can authorise the connection by logging in to Square without handling API credentials directly.
At a glance
| Website | squareup.com |
| Type | Gateway |
| Connection | OAuth |
| Availability | Recommended |
| Links | Dashboard · Support · Status · Terms · Privacy · Test cards |
Where it operates
Merchants can onboard Square in the following countries:
Australia, Canada, Japan, United Kingdom, United States.
Payment methods
Through our Square integration, merchants can accept:
- Cards: Visa, Mastercard, American Express, Discover, Diners Club, JCB, and UnionPay
- Bank debits: ACH (US)
- In person: Card payments taken on a Square terminal (point of sale)
ACH and Square terminal acceptance are each enabled per gateway in the Square connection settings, and ACH must also be enabled on your Square account.
Connecting Square
See the Connecting Square guide for step-by-step setup instructions.