Business owners can accept online credit card payments with such services as Shopify, Paypal Payments and the online invoice service offered by Square, according to the websites of each service. Each service, except for Shopify, is free to use upfront, and business owners only pay a certain percentage per transaction.
Shopify has three seller plans, each of which comes with different transaction fees, according the service's website. The Basic plan has an online transaction fee of 2.9 percent plus 30 cents, while the fees for the Professional and Unlimited plans are 2.5 percent plus 30 cents and 2.25 percent plus 30 cents respectively, as of 2015.
Paypal Payments Standard is a free service PayPal offers to merchants and business owners that enables them to accept credit card payments from customers even if those customers do not own PayPal accounts, as stated by PayPal. The service enables merchants to place payment buttons on the shopping cart pages of their websites, and the transaction fees are 2.9 percent plus 30 cents. PayPal Payments Pro is a paid service that comes with the same transaction fee and enhanced versions of services that come with the standard version, such as fraud screening and offline credit card processing.
Square allows business owners to send invoices with fees of 2.75 percent per transaction, as claimed by Square's website. Invoices can be sent instantly on mobile devices, and the money appears on the owner's account within one to two business days.