Interchange
MCC Codes: How Your Business Category Affects Your Rates
Your Merchant Category Code determines which interchange tier you fall into. If it's wrong, you could be paying more than you should.
Chargebacks
How Chargebacks Affect Your Processing Rates — And Your Account Standing
Too many chargebacks don't just cost you money on the dispute. They can put you in a monitoring program or get your account shut down.
PCI
PCI Compliance Fees: What They Are and When You're Being Overcharged
Every merchant pays some form of PCI fee, but the amount — and what you actually get for it — varies wildly from one processor to the next.