Payments company Square has launched its first integration with Afterpay, offering Afterpay’s buy now pay later functionality to sellers using Square Online for e-commerce in the United States and Australia.

Square’s parent Block completed its acquisition of Afterpay yesterday and immediately announced details of the integration of the buy now pay later company with its payments business.

The integration will allow Square sellers to offer Afterpay BNPL to their customers. Square sellers can try Afterpay for no extra cost until May.

During the promotional period, Afterpay transactions will be processed at the seller’s standard e-commerce processing rate.

According to Block, 56 per cent of American consumers have used a BNPL service. It said the integration would give Square sellers the tools to attract “young, engaged shoppers”.

It said Australia is Square’s largest market outside the United States.

Afterpay co-founder Nick Molnar, who is now Afterpay lead at Square, said in a statement: “This is just the beginning. We look forward to continuing to more deeply integrate the Afterpay platform to unlock even more value for sellers.”