Square wants to further embed itself in your business. The payment company is adding free invoicing to its register service. Square Invoices_ties directly to the Square account of a business. Sellers can send unlimited invoices to suppliers without a monthly fee. But, like the register service, Square will levy a 2.75% transaction fee on all transactions. The company hopes that invoicing through its system will reduce taking payments over the phone and make keeping track of invoices easier for_small businesses because it’s tied to the same system used to collect sales. This continues Square’s path towards becoming a one-stop shop...

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