Adyen's AI-powered Intelligent Payment Routing delivers 26% cost savings on US debit transactions

US regulatory changes effective July 1, 2023 mandated that all US-issued debit cards carry branding from at least two unaffiliated payment networks. For enterprise merchants, this created a routing dilemma at scale: choosing between the lowest-cost network and the highest-authorization-rate network with every transaction. The Federal Reserve's 2024 consumer payment study found debit accounted for nearly one-third of all US payments, with transaction volume up more than 27% from 2022 to 2023. On Adyen's platform alone, debit reached 58% of all US transactions by June 2024. Without automated optimization, merchants absorbed unnecessary processing fees or accepted lower authorization rates — a cost burden that compounded directly with rising debit volume.

Adyen developed Intelligent Payment Routing, an AI-based feature that evaluates every debit transaction in real time and selects the optimal network path based on both transaction fees and authorization probability simultaneously. Adyen's vertically integrated, in-house-built platform enabled a zero-code deployment model: merchants activate the feature with a single toggle, with no additional integration work. The solution operates across all transaction channels — online, in-store, and in-app — drawing on cross-channel data to inform decisions. The feature adds no latency to transaction processing. The feature launched as a market-first offering in September 2024 following a pilot with over 20 enterprise merchants.

The pilot cohort — which included eBay, 24 Hour Fitness, and Microsoft — delivered improvements across both cost and authorization dimensions:

• 26% average cost savings on US debit transactions across the pilot group
• 0.22% average authorization rate uplift against prior debit performance
• Up to 55% cost reduction for the top-performing merchant; a second merchant achieved 52%
• Authorization rate improvements up to 1.15% for individual merchants
• Up to $600,000 saved by a single customer within the first 30 days of activation

Cost savings and acceptance rate gains moved in the same direction simultaneously across the cohort.

• Regulatory mandates that introduce routing complexity — like multi-network debit requirements — can create structural optimization opportunities; where compliance has added inefficiency, AI can systematically resolve it.
• A vertically integrated platform eliminates integration friction: zero-code feature adoption compresses time-to-value to a configuration toggle.
• Machine learning can optimize across competing objectives simultaneously; the conventional trade-off between authorization rates and processing fees is not technically inevitable.
• Debit transaction volume growth (up more than 27% in the US from 2022–2023) means routing optimization compounds in value — the savings potential scales directly with volume.
• Pilot results across a diverse enterprise cohort establish credible benchmarks and surface variance in outcomes before broad rollout.