Point of Sale Economics
Square democratized offline retail processing by eliminating massive merchant gateway accounts. However, physical retailers, coffee shops, and roaming contractors must understand that Square heavily penalizes "Card-Not-Present" transactions (typing the number in by hand) due to extreme fraud risk.
Square Routing Mechanics
The Physical Tap/Swipe
The absolute cheapest processing tier. Using the physical white Square hardware to read the internal EMV chip or NFC tap guarantees the card is genuine. The rate stays locked at ~2.6% + 10¢.
The Keyed-In Penalty
If the magstripe reader breaks and you manually type the customer's credit card number into the iPad, Square charges a brutal ~3.5% + 15¢ because the risk of a stolen card chargeback skyrockets.
Square Online Invoices
Sending a digital invoice carries a mid-tier fee (e.g., 2.9% + 30¢), mirroring exact standard online transaction costs from competitors like Stripe.