The four largest card-payment incumbents — Visa, Mastercard, Stripe, and PayPal — have committed more than $4.7 billion in acquisitions, token sales, and infrastructure buildouts since late 2025 to absorb stablecoin settlement into their existing rails. Visa expanded its stablecoin settlement pil...
"Visa is committed to meeting businesses where they operate, and increasingly, that's onchain." — Cuy Sheffield, VP and Head of Crypto, Visa
The four largest card-payment incumbents — Visa, Mastercard, Stripe, and PayPal — have committed more than $4.7 billion in acquisitions, token sales, and infrastructure buildouts since late 2025 to absorb stablecoin settlement into their existing rails. Visa expanded its stablecoin settlement pilot to nine blockchains in April 2026, reaching a $7 billion annualized run rate — up 50% quarter-over-quarter. Mastercard agreed to acquire stablecoin infrastructure firm BVNK for up to $1.8 billion. Stripe's Bridge unit quadrupled stablecoin volume and rolled out stablecoin-linked cards in 18 countries with plans for 100-plus by year-end. PayPal continues to push its proprietary PYUSD stablecoin into its consumer and merchant network.
The total stablecoin supply crossed $323 billion in early May 2026. Adjusted transfer volume reached $33 trillion in 2025, expanding 72% year-over-year — already exceeding the combined card-network throughput of Visa and Mastercard. The incumbents' strategy is clear: if stablecoins threaten to disintermediate the 2-3% interchange fee that underpins card-network economics, the networks will embed themselves as the trust and compliance layer on top of blockchain rails rather than compete against them.
This report examines the scale, structure, and economic logic of the card-network stablecoin pivot.
Visa disclosed on April 29, 2026 that its stablecoin settlement pilot reached a $7 billion annualized settlement run rate. That figure was $4.5 billion in January 2026 and $3.5 billion as of November 2025, according to prior Visa disclosures — implying a doubling in roughly five months.
The pilot now supports nine blockchains: Ethereum, Solana, Avalanche, Stellar (the original four), plus Base, Polygon, Canton, Arc, and Tempo (added April 2026). Visa supports more than 130 stablecoin-linked card programs across more than 50 countries, according to the company's press release.
For context, Visa's total annual payment volume exceeds $14 trillion. The $7 billion stablecoin run rate is 0.05% of that figure. It is a rounding error in aggregate terms, but its growth trajectory — roughly 100% in five months — marks it as the fastest-scaling settlement modality in Visa's recent history.
Stablecoin-linked card spending across the broader market grew to $4.5 billion in 2025, up 673% from 2024, according to insights4vc.
The expansion from four to nine chains is not arbitrary. Each addition serves a distinct segment of the settlement market:
General-purpose L1/L2 networks (Ethereum, Solana, Avalanche, Stellar, Polygon, Base): These networks handle the bulk of consumer and merchant-facing stablecoin flows. Solana remains Visa's primary settlement chain for U.S.-based USDC settlement, with Cross River Bank and Lead Bank as initial participating institutions.
Institutional/regulated chains (Canton): Canton Network, built with configurable privacy for regulated capital markets, enables compliant settlement for institutional use cases. Visa has become a validator on Canton. This chain already handles over $9 trillion in monthly notional settlement for institutional clients, according to separate reporting.
Payments-native chains (Arc, Tempo): Circle's Arc and Stripe's Tempo are purpose-built Layer-1 blockchains designed specifically for stablecoin settlement and payments. Visa serves as a design partner for Arc and a validator for Tempo. These chains represent a structural shift: the stablecoin issuers and payment processors themselves are building the settlement infrastructure rather than relying on general-purpose chains.
The nine-chain approach creates optionality. Issuers and acquirers can choose chains based on cost, speed, regulatory jurisdiction, and counterparty preference, while Visa provides a common trust and compliance overlay.
The incumbents have spent aggressively to internalize stablecoin capability rather than build from scratch:
| Company | Target / Initiative | Amount | Date | Purpose | |---------|-------------------|--------|------|---------| | Stripe | Bridge (acquisition) | $1.1B | Oct 2025 | Stablecoin orchestration and card issuance | | Mastercard | BVNK (acquisition) | Up to $1.8B | Mar 2026 | Fiat-blockchain bridge, 130-country payout network | | Stripe/Paradigm | Tempo (funding) | $500M | Oct 2025 | Payments-focused L1 blockchain | | Circle | Arc (token presale) | $222M | Q1 2026 | Institution-focused stablecoin L1 | | PayPal | PYUSD expansion | Ongoing | 2025-2026 | Proprietary stablecoin issuance | | Rain | Series C | $250M | Jan 2026 | Full-stack stablecoin card issuance |
The combined disclosed capital deployed exceeds $4.7 billion. Mastercard's BVNK acquisition at up to $1.8 billion is the largest stablecoin-focused M&A transaction on record, according to PYMNTS.com.
Mastercard's rationale, per its press release: BVNK's core capability is bridging fiat and blockchain systems in more than 130 countries. The deal gives Mastercard the ability to connect traditional payment rails with blockchain-based settlement without building the integrations internally. CoinDesk noted that Mastercard "paid double for stablecoin infrastructure it could have built," suggesting the premium reflects time-to-market urgency.
Stripe's Bridge unit, acquired for $1.1 billion, has already gone live in 18 countries with stablecoin-linked Visa cards. The company plans to expand to 100-plus countries by end of 2026. Stripe's broader stablecoin payments volume approximately doubled to around $400 billion, with 60% ($226 billion) driven by B2B transactions, according to CoinDesk.
A notable structural development: the payment incumbents are no longer just settling on existing blockchains. They are building — or co-investing in — their own.
Circle's Arc raised $222 million in a token presale at a $3 billion valuation. Andreessen Horowitz led at $75 million, with Apollo, ICE, SBI Group, Standard Chartered Ventures, ARK Invest, and others participating. Circle sold 740 million ARC tokens at $0.30 each, according to Circle's Q1 2026 SEC filing. Arc is positioned as an "economic operating system" for compliant, high-speed stablecoin and tokenized asset settlement. Mainnet is planned for 2026.
Stripe's Tempo raised $500 million at a $5 billion valuation. Paradigm co-founder Matt Huang serves as CEO. The chain claims capacity for over 100,000 transactions per second with sub-second finality. It is EVM-compatible and designed as enterprise-grade financial infrastructure for the $320 billion stablecoin market.
Canton Network is already operational and being used for institutional settlement. Visa's decision to join as a validator signals that the company views private, permissioned chains as necessary infrastructure for regulated settlement flows alongside public chains.
The economic implication: stablecoin issuers and payment processors are vertically integrating into the base layer. If Circle controls both the stablecoin (USDC) and the settlement chain (Arc), and Stripe controls both the payment processor and the chain (Tempo), the value capture shifts from general-purpose blockchain validators to the payment-infrastructure operators themselves.
The card networks' urgency is driven by a specific economic threat. A February 2026 research note from Citrini Research warned that AI agents, optimized to minimize transaction costs, could systematically avoid card rails and target the 2-3% interchange fee charged by Visa and Mastercard. The alternative: routing payments over stablecoin networks where costs are fractions of a cent.
The data supports the threat's materiality:
Visa, Mastercard, and American Express shares have fallen 19%, 18%, and 23% from prior peaks respectively, with analysts attributing part of the decline to mounting stablecoin disruption risk, according to Blockonomi.
The merchants have strong incentives. Platforms like Amazon, Walmart, and Shopify face 2-3% interchange costs on every transaction. According to PYMNTS.com, merchant-led adoption represents the greatest structural risk to card-network revenue. If large merchants begin offering checkout discounts for stablecoin payments — similar to the cash-vs-card pricing that already exists — the volume shift could accelerate.
Third Bridge Research, however, argues the disruption timeline is longer than commonly assumed. Their analysis notes that stablecoins have not yet meaningfully penetrated point-of-sale retail, and card networks retain advantages in fraud protection, chargeback resolution, and consumer trust. On-chain stablecoin transactions could match card-network off-chain volumes somewhere between 2031 and 2039, though adoption curves in payment networks are nonlinear and could compress that timeline.
A parallel development complicates the incumbents' position. Full-stack stablecoin card issuers — firms that collapse the traditional issuing bank, program manager, and processor into a single entity — are gaining scale rapidly.
Rain, a stablecoin card issuer, scaled to over $3 billion annualized volume after obtaining direct Visa membership. It raised $250 million in a Series C at a $1.95 billion valuation in January 2026 and announced a partnership with Mastercard for institutional card issuance, according to Fortune.
Reap, another full-stack issuer, reported over $6 billion annualized volume. These firms capture more interchange, FX spread, and reserve yield by eliminating intermediary layers, according to insights4vc analysis.
Nium launched a stablecoin card issuance platform in early 2026 that enables companies holding stablecoins to issue spending cards on both Visa and Mastercard through a single API integration, spanning its 190-country payout network.
The total crypto card market grew from approximately $100 million monthly in early 2023 to over $1.5 billion monthly by late 2025 — annualized market exceeding $18 billion. The growth is driven not by retail speculation but by B2B payments, cross-border settlement, and payroll use cases where the cost advantage over traditional rails is most pronounced.
The card networks' multi-billion-dollar stablecoin pivot reflects a calculated bet: it is cheaper to absorb the technology than to compete against it. The economics are straightforward:
Volume defense. At $7 billion annualized, Visa's stablecoin settlement is small. But the 100% growth rate in five months means the base doubles roughly every six months. At that trajectory, stablecoin settlement could represent a material share of Visa's cross-border volume within two to three years.
Margin restructuring. Stablecoin settlement reduces Visa's own settlement costs (no correspondent banking, near-instant finality) while preserving the network fee. The question is whether Visa can maintain network pricing power when the settlement itself costs fractions of a cent.
Vertical integration risk. Circle (Arc) and Stripe (Tempo) building their own chains suggests that the largest stablecoin issuers see value in owning the full stack. If USDC settles on Arc instead of Ethereum or Solana, and Stripe settles on Tempo instead of through Visa, the card network becomes optional for an increasing share of flows.
Regulatory arbitrage closing. The GENIUS Act, NCUA stablecoin issuer rules (proposed May 15, 2026 with comments closing July 17), and the Clarity Act are creating a regulated framework that makes stablecoins acceptable to institutional buyers. This removes one of the card networks' structural advantages — regulatory incumbency.
The total stablecoin supply is projected to reach $1 trillion by late 2026, according to multiple industry estimates. If that projection materializes, the settlement infrastructure being built today will handle multiples of current volume. The incumbents' spending is, in effect, an option on controlling the toll booth of a payment system that may eventually rival their own.
The card networks are not being displaced. They are shapeshifting. Visa, Mastercard, and Stripe have collectively spent billions to ensure that when stablecoin settlement scales from $7 billion to $70 billion to $700 billion, their infrastructure sits in the critical path. The question is no longer whether traditional payment rails will incorporate stablecoins — that is settled. The question is whether the incumbents can maintain their pricing power when the underlying settlement cost approaches zero. The data suggests they are buying time, not a permanent moat. The next 18 months will determine whether the absorption strategy holds or whether vertical integration by Circle, Stripe, and crypto-native issuers routes enough volume around the networks to compress margins permanently.