PayPal Pay in 4

PayPal Pay in 4 is the massive, sleeping giant of the BNPL industry. When PayPal realized Klarna and Afterpay were stealing their checkout market share, they simply flipped a switch and instantly deployed "Pay in 4" to hundreds of millions of existing PayPal users globally, instantly creating a terrifyingly massive BNPL competitor overnight. Its absolute biggest advantage is "Zero Friction." A merchant who already uses PayPal for their checkout (which is almost everyone on earth) does not have to install a new plugin, sign a new contract, or learn a new dashboard. PayPal automatically displays the "Pay in 4" button next to the standard PayPal button, instantly offering BNPL to the merchant's customers with literally zero technical effort. Furthermore, unlike Klarna or Afterpay which charge the merchant a massive 6% premium to use their BNPL service, PayPal offers "Pay in 4" at the exact same standard processing rate the merchant already pays (e.g., 2.9% + $0.30). The merchant pays no extra fees to offer it, and they get paid fully upfront, completely undercutting the expensive business models of the dedicated BNPL startups.