Klarna

Country: Sweden (SE) | Payment Rail: bank_clearing

BNPL Market Adoption: 22%

Klarna is the leading Swedish Buy Now Pay Later (BNPL) and checkout solution, featuring 30-day interest-free invoices and flexible installments widely used for fashion, electronics, and digital retail.

🔄 User Payment Flow

User selects Klarna (Pay in 30 days, Pay Now, or Financing) at checkout
User identifies with Swedish civic registration number (Personnummer) and BankID
Klarna executes instantaneous algorithmic credit underwriting
Order is finalized without paying upfront; user manages payment in Klarna app

⚙️ Characteristics & Settlement

Instant Payment	YES
Supports QR	NO
Supports Recurring	YES
Supports Refund	YES

🛠️ Merchant Integration Steps

Merchant integrates Klarna Payments SDK or Klarna Checkout (KCO)
Klarna handles complete checkout flow, fraud detection, and credit scoring
Upon order capture, Klarna guarantees 100% merchant payout
Klarna manages debt collection and customer payment schedule

🚀 Supported Payment Gateways & Acquirers (PSPs)

🔌 Stripe🔌 Adyen