Pieces
Every piece so far, newest first. Each one answers a question a merchant asks.
-
Interchange
How to read your processing statement
A card-processing statement is one number and a lot of names. Here is a real-shaped statement for a café, every line explained, and why the effective rate is the one comparison that cannot be renamed.
-
Interchange
What interchange is, and why nobody can discount it for you
Interchange is the largest part of what you pay to take a card, and your processor never touches it. Here is who sets it, who keeps it, why it exists, and what a salesman means when he says he can get you a better rate on it.