Some high-risk merchants like payment service providers like PayPal, Stripe, and Square because of the simple sign-up process. While you can open an account with one of these companies, there are some reasons you may want to reconsider.nnMost of these companies charge a flat rate that can be easier to calculate, but it's often higher than the fees merchant account providers charge. Secondly, the big 3 are notorious for closing accounts and providing limited support.nnSome high-risk industries, like adult entertainment, might be banned or have difficulty getting an account with a payment service provider. Those companies would likely have more success with payment processors that service high-risk accounts.