The Capital Markets Convergence

The stablecoin narrative has consolidated around a single proposition: faster, cheaper payments. That proposition is valid but incomplete. Stablecoin settlement, while foundational, represents only the first layer of a structural transformation in how capital moves across borders. This paper argues that the convergence of stablecoin payments, on-chain foreign exchange, and tokenized local securities constitutes a new architecture for global capital markets—one that operates continuously, reduces intermediation, and redirects value toward the economies that generate it.

The implications extend beyond payments into corporate treasury management, sovereign debt markets, and financial inclusion at scale. And the evidence is quantitative:

The Access Problem and the Extraction Problem

In 2018, I sat in a village in rural Rwanda with no Wi-Fi, no cellular data, and no access to any payment application built in Silicon Valley. The woman beside me was sending money to her family using a text message. mVisa and M-PESA had solved the access problem in geographies that most Western fintech companies had not yet considered. That experience reoriented my career. I returned to the United States and built an SMS-based payment platform—The Odyssey Project—through Visa’s Fintech Fast Track program, a project that would later become the subject of a peer-reviewed case study in MIS Quarterly Executive. The conviction was simple: the most consequential financial infrastructure is not built for people who already have access. It is built for people who do not.

But that experience also revealed a second, less visible problem. The access gap in payments has received significant attention and meaningful progress. The extraction gap has not. Large multinational corporations routinely repatriate capital out of emerging markets due to currency volatility, regulatory complexity, and a lack of local yield instruments. The paradox is striking: these are the same markets in which those corporations are investing for growth.

This pattern is structural. The global correspondent banking network has contracted approximately 30% since 2011, according to BIS data. The South Pacific lost roughly 60% of its correspondent relationships. Small island developing states lost 41%. North Africa lost 40% of its USD corridors. Despite this contraction, transaction volumes increased 61%—more money flowing through fewer, increasingly concentrated channels. When a country loses its last correspondent banking relationship, its businesses are effectively severed from the global financial system.

This is not merely a payments problem. It is a macroeconomic one. And solving it requires an entirely new architecture for how capital is deployed, managed, and kept productive across borders.

Layer One: Stablecoin Settlement as Foundation

The first layer is stablecoin settlement—infrastructure that allows value to move between institutions on blockchain rails, with fiat entry and exit points on either side. Cross-border settlement through traditional correspondent banking is slow, expensive, and opaque. A typical international wire settles in one to three business days, incurs 2–5% in costs, and offers limited visibility. Stablecoin settlement addresses all three frictions simultaneously.

At Nuvei, we started at this layer. We built infrastructure connecting card network schemes to stablecoin settlement across 200 markets. In December 2024, we launched a blockchain payment solution in Latin America, partnering with BitGo for custody and Visa for card issuance. By August 2025, we expanded into full cross-border money movement: businesses fund virtual bank accounts through local rails, value transfers via stablecoin rails with same-day settlement, and payouts arrive in fiat. No crypto exposure for end users.

This approach reflects a conviction I developed during blockchain research and development at Visa, where I co-invented six patents. One (EP 4627504 A1) enables near-instantaneous cross-border remittance with funds arriving in under ten seconds and automatic fallback to fiat rails. Another (US 2024/0273521 A1) covers single-use digital assets as foundational primitives for tokenized payments. A third (EP 4619925 A1) addresses non-custodial wallet architecture enabling self-custody within payment network infrastructure.

The market has validated Layer One. Stablecoin capitalization reached $316 billion as of March 2026. Volume hit $33 trillion in 2025—surpassing Visa and Mastercard combined. The GENIUS Act established the first US federal framework. Nuvei received its EU-wide MiCAR CASP license in December 2025. But settlement alone is necessary and insufficient. It optimizes the movement of value. It does not address whether that value stays.

The Friction Tax: How Industries Lose Billions

Before describing Layers Two and Three, it is worth documenting the scale of the problem they solve.

Brazil’s IOF Tax: Repatriation Friction

Brazil’s IOF is a federal tax on financial transactions that the Executive Branch can change by decree. In May 2025, the rate was standardized at 3.5% for outbound transfers—up from 0.38%. IOF collected ~$15 billion in 2025. Combined with a new 10% dividend withholding tax, PwC estimates the total rate on repatriated profits rises to approximately 40.6%. Brazil is also exploring extending IOF to stablecoin transfers, estimating $30 billion or more in annual leakage through crypto channels.

Colombia’s Phone-Call FX Regime

Colombia requires all cross-border FX through ~47 authorized intermediaries, with sworn declarations per transaction. Payment companies must call their bank’s trading desk daily to convert COP to USD/EUR. The IMF’s February 2025 report issued nineteen reform recommendations. Stablecoins already represent 14% of cross-border export payments—the market is finding workarounds.

Airlines: $333B in Settlement

IATA’s BSP and ARC process a combined $333 billion annually, with $7.9 billion in transit at any moment and 12-day average delays. Payment costs consume $20–22 billion—78% of industry net profit. As I noted in my September 2025 PYMNTS interview, the real opportunity is being disciplined about where stablecoins genuinely outperform legacy systems—and airline settlement is exactly that corridor.

Maritime: 42-Day Payment Cycles

Over 80% of $33 trillion in global trade moves by sea. Average payment delay: 42 days. The trade finance gap stands at $2.5 trillion. SME rejection rates: 41%. GSBN, the surviving blockchain initiative, has issued 300,000+ electronic bills of lading and is testing tokenized settlement with stablecoins.

Critical Minerals

The DRC produces ~70% of global cobalt with banking assets of only 7% of GDP and a single US correspondent bank. China processes 91% of rare earths with escalating export controls. High-value transactions, limited banking access, acute FX exposure: the convergence use case at its most extreme.

Gig Economy

The top five platforms pay out $640 billion annually. For freelancers, fees reach 15–25% of earnings. Uber’s CEO is considering stablecoins. Visa launched a USDC payout pilot. Mastercard agreed to acquire stablecoin infrastructure firm BVNK for up to $1.8 billion—the largest stablecoin acquisition to date. B2B stablecoin payments surged 733% year-over-year. The gig economy is adopting stablecoins because existing infrastructure extracts too much from workers.

Energy

The oil and gas market: $6.1 trillion, 80% USD-settled—but one-fifth of trade now in non-dollar currencies. China’s first yuan LNG purchase. Saudi Arabia joining mBridge. $8.38 billion in quarterly FX headwinds for North American multinationals. Even the petrodollar system is fragmenting. An industry managing $6 trillion annually will not remain on legacy rails indefinitely.

Technology Repatriation

Pre-TCJA: $2.6 trillion offshore, $600 billion from the top five tech firms. The transition tax triggered $1.04 trillion in repatriation. But it went to buybacks—$86 billion to $231 billion. Even when capital comes home, it does not flow to productive use. The convergence architecture offers a path where capital stays deployed in the markets that generate it.

Layer Two: On-Chain Foreign Exchange

On-chain FX enables currency conversion natively on blockchain with continuous liquidity and near-instantaneous execution. In Colombia, a multinational calls its bank’s FX desk daily and waits days. On-chain FX collapses this into a single 24/7 operation.

More than $10 trillion sits in corporate cash globally: $4.11 trillion in US companies alone, €1.56 trillion in European corporates, $1–2 trillion in Japan. McKinsey estimates 20–30% of cash needs can be freed. The 2025 AFP survey found only 5% of treasurers cite yield as their top objective. On-chain FX, by eliminating pre-funded buffers and enabling real-time conversion, begins to unlock this value.

Layer Three: Tokenized Local Securities

Tokenized securities enable capital to remain in emerging markets while generating yield, maintaining liquidity, and hedging FX. Return to the multinational with $50 million in Brazil: repatriation triggers 3.5% IOF, bank fees, and 10% withholding—total extraction exceeding 15%. With the three-layer architecture: deploy into tokenized Brazilian treasury instruments, hedge BRL/USD on-chain, maintain liquidity. No IOF is triggered. No cross-border transfer occurs.

Tokenized US Treasuries crossed $10 billion in January 2026—fifty-fold growth from early 2024. BlackRock’s BUIDL reached ~$2.9 billion AUM. The broader RWA market grew from $5 billion (2022) to $30 billion+ (Q3 2025).

The Macroeconomic Case: Value Where It Is Created

Emerging markets face a persistent structural drain. Revenue is repatriated. Remittance fees average 6.5%. Capital markets remain shallow. The DRC exemplifies this—70% of global cobalt, banking assets of 7% of GDP. Value creation in the Congo. Value capture in Europe.

The three-layer architecture breaks this cycle. Yield on local instruments reduces repatriation incentives. Cheap settlement reduces friction. Tokenized bonds on global infrastructure expand the investor base. Downstream: deeper markets, lower borrowing costs, increased credit access.

This is the conviction that crystallized in Rwanda in 2018. The woman sending money by text message was not waiting for a stablecoin. She was waiting for infrastructure that respected the value she created.

The Regulatory Prerequisite

Regulatory compliance is not an obstacle. It is a prerequisite. The GENIUS Act’s provisions—1:1 reserves, first-priority bankruptcy claims, BSA compliance, reciprocal international agreements—create the foundation. Nuvei received EU-wide CASP authorization in December 2025. Jurisdictions building coherent architectures across all three layers will attract disproportionate capital.

What Comes Next

Layer One is built. Major payment processors and card networks are integrating stablecoin infrastructure. Nuvei is in-process of integrating blockchain as a foundational technology layer embedded in its core payment stack across 200 markets. Layer Two is emerging—on-chain FX liquidity growing, treasury teams exploring real-time conversion. Layer Three is nascent but accelerating—when a multinational can deploy idle cash in tokenized Brazilian Tesouro Direto bonds, hedge on-chain, and maintain liquidity without triggering IOF, repatriation economics invert.

These layers are sequential and interdependent. Settlement creates the rails. On-chain FX creates flexibility. Tokenized securities create the reason to stay. Together, they transform cross-border finance from extraction to retention.

The question is no longer whether capital markets and stablecoin payments converge. It is who builds the integrated stack and which economies benefit first.

This is a living document. The convergence thesis is developing in real time—as today’s Mastercard/BVNK acquisition demonstrates. This paper will be updated as new data, regulatory milestones, and market developments emerge. Last updated: March 2026.