From P2P to Commerce: The C2B Pivot in Stablecoin Payment Infrastructure

The narrative around stablecoins is undergoing a quiet but profound shift. While the crypto community celebrates impressive growth metrics—circulating supply doubling and adjusted trading volume tripling over two years—the real story goes deeper. New analysis from Allium’s stablecoin infrastructure report reveals that c2b and commercial transactions are now driving adoption, marking a fundamental transition from experimental peer-to-peer transfers to a genuine payment infrastructure underpinning real business activity.

Stablecoin Transaction Growth Outpaces Supply Expansion

The numbers paint a striking picture of maturation. Since January 2024, circulating stablecoin supply has grown by more than 100%, while adjusted trading volume has surged 317%—a 3x divergence that signals a critical inflection point. In early-stage assets, supply growth typically outpaces usage. But when usage grows faster than supply, it indicates the asset has shifted from being primarily held as value storage to being actively circulated as a medium of exchange.

Transaction velocity tells this story most clearly. Over the past roughly two years, stablecoin velocity has climbed from 2.6x to over 6x—meaning each dollar in circulation turns over 2.3 times more frequently than it did in early 2024. This mirrors the maturation pattern of established payment systems rather than speculative trading assets.

The transaction count metric adds another layer of insight. When payment volumes grow faster than their corresponding trading values, it signals that average transaction sizes are shrinking. This trend, typically seen in maturing payment infrastructure rather than experimental platforms, points to increasingly routine, smaller-denomination payments replacing occasional large transfers.

C2B and B2B Payments Surge While C2C Growth Plateaus

The payment channel breakdown reveals the most significant finding: consumer-to-consumer (C2C) transfers, once the primary use case, have lost their market dominance. By 2025, C2C had dropped below 50% of total payment volume—and it has never recovered that threshold since.

Meanwhile, c2b payments are experiencing explosive momentum. Consumer-to-business transactions grew 131% during the measured period, while business-to-business (B2B) payments expanded 87%—both far exceeding the overall 76% payment growth rate. This acceleration reveals that users increasingly rely on stablecoins for subscription services, merchant payments, and regular commercial transactions.

The c2b category carries particular significance. As average transaction sizes in c2b channels contracted from $456 to $256, the growth in total volume indicates that users are deploying stablecoins for recurring, routine purchases—not one-off experiments. This mirrors the adoption pattern seen with India’s UPI system, which only accelerated when merchants integrated the infrastructure and business tools matured.

Competing Against ACH, Not SWIFT: The Domestic Payment Revolution

One of the most counterintuitive findings concerns the cross-border narrative. For years, the prevailing assumption held that stablecoins would disrupt international remittances by enabling low-cost, swift transfers to replace services like Western Union. Yet the data contradicts this thesis.

Approximately 75% of all stablecoin payment transactions occur domestically. Cross-border payment volume has declined from 44% to 25-29% of total activity over the past year, with 84% of regional transactions staying within the same geographic area. Stablecoins are not yet competing with SWIFT for international settlement—they’re competing with ACH, the U.S. domestic payments backbone.

Consider the comparative growth trajectories: ACH B2B payments expanded roughly 10% in 2025, while stablecoin B2B payments grew 87% during the same period. While absolute scale remains incomparable and stablecoins have a lower baseline, this growth trajectory signals a different competitive arena than early adoption narratives suggested.

Beyond Remittances: Stablecoins Enter the Commercial Era

The shift from remittances to domestic commercial payments represents a fundamental repositioning. The data points toward three converging trends: increasing c2b dominance in payment mix, declining average transaction values indicating routine usage, and expanding use cases spanning payroll settlements and invoice payments.

This trajectory closely follows the development pattern of infrastructure-grade payment systems. When ACH launched, it replaced paper checks in payroll systems. Gradually, as business tools and reporting features matured, it became the backbone for general commerce. Stablecoins appear to be traversing the same path, with the exception that adoption is accelerating far more rapidly.

Importantly, Allium’s analysis identifies payment volume as only 2-3% of adjusted stablecoin transaction volume, suggesting their findings likely understate true payment infrastructure adoption. As wallets and transaction patterns become better classified, the c2b and commercial payment segments may prove even more dominant.

The Inflection Point Ahead

The convergence of these trends—c2b growth surpassing peer-to-peer channels, domestic transaction dominance, and declining average payment sizes—suggests stablecoins are transitioning from a speculative crypto asset into genuine payment infrastructure.

The critical test lies ahead: if c2b and B2B market share continues expanding even during periods of crypto market weakness, and if average transaction sizes remain on a downward trajectory, it would confirm that stablecoin payment infrastructure is decoupling from speculative crypto volatility. The next few quarters will reveal whether this commercial pivot is a lasting structural shift or a temporary cyclical phenomenon—but the momentum toward c2b adoption suggests the former.