The only thing I will add about braintree vs stripe is that they are both aggregators that aggressively underwrite using algorithms. This means they are taking

The only thing I will add about braintree vs stripe is that they are both aggregators that aggressively underwrite using algorithms. This means they are taking the risks upfront without full due diligence and then when any unexpected activity occurs (high ticket or high volume), your funds can be potentially held for a long time. Other credit card processing companies may not be able to get you signed up in 5 minutes, but they follow a more traditional process of validating your business and documentation that gives you a more robust foundation for running transactions without problems. Both of the vendors above however have extremely user friendly documentation and platforms and fast onboarding times. I would recommend them for startups. Disclosure, I work for Fattmerchant, a fintech startup / payment processor.