Banking API/protocol [closed]
Look up the Open Financial Exchange (OFX) format on the web. That (I believe) is a generic format for the banking industry.
banking
Building a complete online payment gateway like Paypal [closed]
What you’re talking about is becoming a payment service provider. I have been there and done that. It was a lot easier about 10 years ago than it is now, but if you have a phenomenal amount of time, money and patience available, it is still possible. You will need to contact an acquiring bank. … Read more