Where the Fees Go

Lesson 5 · taught by Pip

When a store sells you something for $40, it doesn't keep all $40. A small slice is shaved off and split among the crew who moved the money. Understanding that split explains a lot — like why some shops add a surcharge, or set a minimum for card purchases.

Picture a tip jar passed down a line of helpers. Each one who touched your payment takes a small, agreed share before passing the rest along. By the time it reaches the store, the $40 has thinned out a bit.

The three slices

There are three kinds of fee, and each goes to a different place.

Interchange — goes to the shopper's bank (the issuer). This is the biggest slice. The bank that gave you your card charges it for taking on the work and the risk of fronting the payment. Interchange is just the industry's word for that share. It's usually a small percentage plus a few flat cents — think along the lines of "about 1.5% to 3% plus a dime," varying by card type. Premium rewards cards cost merchants more, which is part of how those airline miles get funded.

Assessment — goes to the network. The card network is the company whose logo is on the card, the one that runs the rails the payment travels on. Its slice, called the assessment, is tiny — often a fraction of a percent — but it rides on every single transaction the network carries.

The processor's markup — goes to the processor. The processor is the company the store hired to handle card payments. On top of the two slices above, it adds its own charge for doing the plumbing. Many small businesses just see one blended rate — a popular published example is "2.9% plus 30 cents per online sale." That headline number quietly bundles all three slices into one easy figure.

Why the flat cents change everything

Look closely at that "plus a few cents" part. Two of the slices are percentages — they grow as the sale grows. But part of interchange (and the processor's markup) is a fixed number of cents that never changes, no matter the price.

Here's the everyday version: imagine a delivery driver who charges the same flat trip fee whether you order one coffee or fifty. On a big order, that fee is a rounding error. On a tiny order, it's a huge chunk of the bill.

A flat 30 cents barely dents a $200 sale, but it takes a real bite out of a $2 sale. That single fact explains two things you've seen at a register:

• Card minimums ("$10 minimum for cards"). Below a certain amount, the flat fee eats most of the store's profit, so they ask you to spend a little more.
• Small-purchase surcharges. Some shops add a few cents to tiny card sales to cover that flat slice — or nudge you toward cash, where there's no slice at all.

Neither is the store being greedy. They're protecting themselves from a fee that stays stubbornly fixed while the sale stays small.

Think of the lighthouse

Imagine cargo passing through three small toll gates on its way to port. Each gate takes a modest toll — none of them ruinous, but together they add up. The shipper builds those tolls into the price of goods, so the customer never sees them as separate.

Card fees are those tolls: real, layered, and usually baked silently into the price you pay.

Your turn

A café pays interchange of "1.5% plus 10 cents" per card sale (we'll ignore the other two slices for now). Work out the fee on a $2.00 coffee, then on a $50.00 order. Which sale feels that flat 10 cents more?

(Answer: the $2 coffee → 3¢ + 10¢ = 13¢, about 6.5% of the sale. The $50 order → 75¢ + 10¢ = 85¢, about 1.7%. The tiny coffee feels the flat dime far more — which is exactly why card minimums exist.)

Next, we'll follow the money backward — what happens when a shopper says "I never bought that." That's the dispute system called a chargeback. 🔦