1) Payment gateway charges Look at what is setup fees and transaction fee that a payment gateway charges.
2) Automatic billing system The recurring billing is a must for a business when it comes to monthly billing for the repeat customers.
3) See that it is PCI DSS You should see whether the payment gateway is PCI DSS compliant.
4) Mobile payment
The Mobile payments support should definitely be on your checklist while selecting a payment business.
5) Integration of payment gateway with your site
Selected payment gateway should provide easy integration options/plug-in with seamless user experience.
6) Help and support
Lastly the you should see that payment gateway provide a good support service for you is it 24/7 chat or any kind of support service.
