How processing is priced
Payments are the largest recurring line in a POS relationship and the easiest to obscure. A bundled or tiered rate hides the split between interchange, card-brand assessments, and the vendor's own markup, so two quotes that look identical can differ by five figures a year.
Ask every vendor
Show me interchange, assessments, and your markup as three separate lines on a sample month of my volume.
Katalyst
Interchange-plus, with the markup stated separately. No bundled tiers and no surprise tier shifts.
