framework
Six Pathways
There is no single model for cross-border stablecoin settlement. Six architectures compete by corridor, compliance profile, capital model, and trust layer.
Published
Cross border payments are fragmenting into six coexisting settlement pathways, from correspondent banking to multilateral clearing and tokenized institutional settlement.
Reader Brief
Cross-border payments are not migrating from one architecture to another. They are fragmenting into multiple coexisting settlement pathways.
Reading Guide
Four ideas to anchor the framework.
Six pathways stratify by transaction size, compliance, and corridor maturity.
Correspondent banking, fintech direct accounts, hybrid treasury, fiat sandwich, multilateral clearing, and tokenized institutional settlement each occupy a different segment of the cost-compliance-speed triangle. The Harvard Business School comparison by Du, Huang, and Scharfstein finds that stablecoins are strongest in low-value, high-friction corridors, while banks retain high-value institutional flows where legal enforceability and compliance certainty matter more than price [1].
The market evidence shows contraction, price compression, and stablecoin acceleration.
Pathway 1 contracted by 22% in active correspondent banking relationships from 2011 to 2019 [3]. Pathway 2 fintech attackers undercut incumbent bank pricing by roughly 5x in lower-value cross-border payments [4]. Pathway 4 fiat sandwich settlement sits inside a broader adjusted stablecoin transaction market measured around $5.7T in 2024, but that number is a scale signal rather than proof of pure payment or sandwich volume [6][10].
Pathway 5 is the capital-efficiency unlock.
CLS Bank settles around $5T daily in FX with multilateral netting efficiency of about 96% [8]. The translation is simple: every $100 in gross obligations requires only about $4 in actual movement. Applied to stablecoin settlement, a network of 10 operators can replace 45 bilateral transfers with 10 net transfers.
The natural evolution is bilateral fiat sandwich, then clearing, then tokenized settlement underneath.
Most operators begin with Pathway 4 in one or two corridors. As volume grows, bilateral relationships become hard to manage. Operators then graduate toward Pathway 5 for netting, counterparty discovery, and shared compliance infrastructure. At institutional scale, the clearing network may settle net obligations through Pathway 6 for maximum capital efficiency.
The Landscape
A taxonomy for a stratifying market.
Cross-border payments are not moving from a single old rail to a single new rail. They are fragmenting into multiple settlement pathways. Each serves a different segment, carries a different risk profile, and requires a different infrastructure stack. Understanding which pathway fits which use case is the first question for any institution entering stablecoin settlement.
Not every pathway competes with every other pathway.
The market is not winner-take-all. It stratifies into layers. The HBS comparison constructs harmonized all-in cost measures across banks, fintechs, and stablecoin rails [1]. Stablecoins are cheapest for low-value transfers in high-friction corridors. Banks remain dominant for high-value institutional flows where compliance certainty, liquidity, and legal enforceability matter more than raw cost. The question is not "which rail wins?" It is "which pathway serves this corridor, client segment, and compliance requirement?"
Correspondent Banking
The incumbent is slow, expensive, and shrinking, but still carries the legal certainty and liquidity depth that alternatives have not fully replicated.
Correspondent banking routes cross-border payments through chains of intermediary banks. The model is cumbersome, but it remains the backbone of global wholesale payments because it provides enforceable legal relationships, deep liquidity, and mature compliance accountability.
- ~$5T daily SWIFT message volume, still the backbone of wholesale cross-border payments [2]
- -22% global decline in active correspondent relationships from 2011 to 2019 [3]
Strengths: legal certainty, deep liquidity, institutional trust.
Correspondent banking works best for high-value institutional transfers between major financial centers with direct correspondent links. In G7-to-G7 corridors, SWIFT gpi can deliver settlement in minutes [2]. For regulated institutions moving large values, the compliance trail and legal enforceability still matter.
Weaknesses: cost, speed, and shrinking reach.
The model struggles in emerging-market corridors where correspondent relationships have been cut. A payment from Nairobi to Shanghai may require three or four hops, with each hop adding cost and delay. The broader network is contracting, not expanding [3]. The CBR Exodus explains why this pathway is retreating globally.
Trajectory: retreat to profitable corridors.
Correspondent banking is not disappearing. It is retreating toward the corridors where it is most profitable and where compliance economics justify the capital and operating cost. That leaves a growing gap in lower-value and emerging-market corridors.
Direct Local Accounts
Fintechs bypass correspondent banking by holding local bank accounts in multiple jurisdictions and netting flows internally.
Wise, Airwallex, Deel, and similar operators use local bank accounts instead of correspondent chains. The sender pays into a local account in Country A. The fintech instructs a payout from a local account in Country B. No money needs to cross the border for every individual transaction; internal netting reduces actual movement to a fraction of gross volume.
This is the model that undercut banks by roughly 5x on lower-value transfers.
McKinsey data shows fintech attackers charging roughly one-fifth of incumbent bank pricing in lower-value P2P cross-border payments [4]. The economics work because internal netting compresses gross flows, local-to-local settlement avoids intermediary bank fees, and marginal transaction cost drops sharply once local accounts are established.
Where it works and where it fails.
The model works best in high-volume, balanced corridors where the fintech can maintain stable banking relationships: US-Mexico, UK-India, EU-Philippines, and similar routes. It fails in markets where banks refuse to serve fintech clients. Africa, parts of Southeast Asia, and the Caribbean remain difficult because local banks apply de-risking logic to fintechs, not only to correspondent banks.
Trajectory: growth in established corridors, limited expansion where banking access is hardest.
Direct local accounts will keep growing where local bank access is stable. The harder question is whether this pathway can expand into the same corridors where correspondent banking has retreated. Those are the places where cost and speed improvements are most needed, but also where account access is least reliable.
Hybrid Treasury
Payment operators keep fiat interfaces for customers but use stablecoins internally for treasury and inter-entity settlement.
Hybrid treasury keeps the customer experience familiar: fiat in, fiat out. Behind the scenes, the operator may use USDC or USDT to move value between its own entities, rebalance treasury, or settle across borders before converting back into local fiat for the last mile.
The benefit is treasury efficiency without asking the customer to touch crypto.
The operator can reduce internal settlement cost while preserving a regulated fiat interface. This matters for remittance providers and B2B payment platforms with enough volume to justify the operational complexity. DP World announced stablecoin-enabled trade settlements in 2025, a high-profile example of the broader corporate treasury direction [4].
The barrier is a dual compliance stack.
Clear Junction found that 47% of payment operators cite compliance documentation and monitoring as the biggest operational pressure in hybrid models, while 46% cite partner and counterparty constraints as the top implementation barrier [5]. The operator must manage traditional payment regulation on the customer side and crypto or stablecoin regulation on the treasury side.
Trajectory: attractive at scale, heavy for smaller operators.
Hybrid treasury has high fixed costs. It works best for operators with enough volume, compliance capacity, and treasury sophistication to run both sides of the stack. Smaller operators will usually find the model too expensive unless a shared infrastructure layer absorbs part of the burden.
Fiat Sandwich
Fiat enters on one side, stablecoin transits in the middle, and fiat exits on the other side.
The fiat sandwich is the direct stablecoin transit model. Two licensed operators, one at origin and one at destination, settle through stablecoin rails with compliance data assembled before value moves. There is no correspondent chain and no internal netting requirement. The Fiat Sandwich explains the architecture in depth.
- $5.7T adjusted stablecoin transaction volume in 2024; not pure payment volume [6][10]
- 8 jurisdictions with regulatory frameworks that can enable this pathway [7]
The fiat sandwich is fastest-growing because each operator needs less infrastructure.
Unlike direct local accounts, which require bank accounts in every corridor, or hybrid treasury, which requires a dual compliance stack, the fiat sandwich lets each operator hold one license and one banking relationship in its home jurisdiction. The stablecoin rail connects operators without requiring every pair to pre-build a correspondent relationship.
Where it works and where it fails.
It works wherever licensed operators exist on both ends of a corridor, especially in emerging-market routes where correspondent banking has retreated. It fails when the destination market lacks a licensed off-ramp. The last-mile conversion to local fiat remains the bottleneck.
Trajectory: rapid growth, contingent on regulatory clarity.
Each new jurisdiction that classifies stablecoin transit as a payment service expands the addressable corridor set. This is why the regulatory sequence in The Two-Stage Framework matters: permit transit first, then add limited holding once supervision is proven.
Multilateral Clearing Network
Multiple operators connect once to a shared clearing layer for netting, compliance, and counterparty discovery.
Multilateral clearing replaces pairwise settlement sprawl with a shared network. Instead of every operator building a bilateral relationship with every other operator, each operator connects to the network. The network handles matching, compliance assembly, and net settlement.
Evidence And Sources
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- Competing Rails for Cross-Border Payments: Banks, Fintechs, and Stablecoins - Harvard Business School
- gpi Performance Data - SWIFT
- Correspondent Banking Data Report - BIS CPMI
- How Banks Can Win Back Lower-Value Cross-Border Payments - McKinsey
- Stablecoin Settlement Models Survey - Clear Junction
- Blockchain Cross-Border Payments - Visa on-chain analytics; BVNK
- Global Approaches to Stablecoin Regulation - EY
- Exploring Multilateral Platforms for Cross-Border Payments - BIS CPMI; CLS Bank operational data
- Cross-border Payment Technologies: Innovations and Challenges - BIS
- The State of Stablecoins in Cross-Border Payments: 2025 Primer - FXC Intelligence