Accepting PayPal is a no-brainer. Almost everyone has a PayPal account these days (in fact, PayPal claims 192 million active users in more than 200 markets), it’s incredibly easy to setup and use, and it can get you up and running in a very short amount of time (i.e, immediately).
PayPal is extremely transparent with its terms and pricing, and it doesn’t lock you into a contract with an early termination fee. The number of integrations offered is unreal, so you can be certain that PayPal will sync with your shopping cart, accounting application, or shipping software. PayPal even offers an mPOS app (PayPal Here) for mobile merchants (you can check out our full review of that here). The company also owns Braintree Payments, but the user experience is very different if you sign up with Braintree.