Stablecoin B2B payments: how paying suppliers abroad works

How a stablecoin payment to a supplier abroad moves, from euros in to local currency out, what changes against correspondent banking, and the rules in the EU, the UK and the UAE.

· Head of IT
· 8 min read
A shipping container with a sky-blue glass dollar coin, a gold euro coin and exchange and payout blocks

A stablecoin B2B payment swaps the correspondent banks in the middle of a cross-border payment for a transfer on a public blockchain. The payer's money becomes a stablecoin, moves on-chain, and is kept by the supplier or converted into the supplier's currency and paid out locally. Each conversion, and the custody in between, is regulated, so licences and partners matter as much as software.

This guide is general information, not legal advice: the details depend on your services and your market, so confirm them with a lawyer and the regulator before you apply.

How a payment moves

Take a Dutch importer paying a supplier in Brazil in USDC. Under the EU's Markets in Crypto-Assets Regulation (MiCA), USDC is an e-money token, a crypto-asset tracking one official currency, and so legally e-money (Articles 3 and 48). ESMA's register lists its white paper from Circle Internet Financial Europe SAS, an e-money institution authorised in France.

Step

The finance team sees

The operator runs

1. Funds in

Euros arrive on the company's IBAN

An account at a partner bank or e-money institution

2. On-ramp

Euros converted to USDC at a quoted rate

A liquidity provider fills the order; USDC goes into custody

3. Approval

Rate, fee and amount to arrive; a second approval

Rate held, payment and address screened, Travel Rule data ready

4. On-chain transfer

Status: sent

USDC moves to the supplier's provider or wallet

5. Off-ramp and payout

Reais by PIX, or USDC kept

A payout partner converts and pays on the local rail

6. Receipt

Invoice number, rate and fee

Reconciliation with the bank, the chain and each partner

The on-ramp guide explains step 2.

What changes against correspondent banking

In correspondent banking, a payment passes through banks that hold accounts with each other. A 2020 report to the G20 by the CPMI, the central banks' payments committee, names frictions such as long transaction chains, limited operating hours, fragmented data formats and complex compliance checks, though it also records gains in speed and transparency. A payment arriving after hours waits for the next opening.

  • Timing. The blockchain runs at any hour; the fiat legs keep their rails. Euro instant transfers run 24 hours a day, every day, and arrive within 10 seconds (Instant Payments Regulation), but many rails follow banking days, so end-to-end speed depends on the corridor.

  • Cut-offs. They remain. ESMA's guidelines on transfer services (26 February 2025) expect providers to tell clients, before they sign, their cut-off times, maximum execution times and the confirmations each network needs before a transfer is irreversible.

  • Transparency. Before each transfer, the provider shows its charges, listing network fees separately, and warns when the transfer becomes irreversible; afterwards it confirms parties, amount, value date and charges.

What you need beyond the software

Licences can be your own or a licensed partner's.

EU

  • Crypto-asset services. Custody, exchange for funds and transfers for clients are crypto-asset services (MiCA, Article 3) that need authorisation as a crypto-asset service provider, or CASP (Article 59). Transfer services need a client agreement covering, among other terms, security and fees (Article 82). Custody and exchange mean capital class 2: €125,000, or a quarter of the previous year's fixed overheads if higher (Article 67, Annex IV).

  • E-money tokens and PSD2. The EBA's no-action letter of 10 June 2025 advises treating transfers of e-money tokens for clients, and custodial wallets that send and receive them, as payment services under PSD2, the EU's Payment Services Directive, needing authorisation from 2 March 2026. Its opinion of 12 February 2026 advises letting firms continue with a payment or e-money licence or a licensed partner, and applicants only under strict conditions, such as no new clients, until new EU payment rules apply.

  • Accounts and payouts. Euro accounts and local-currency payouts are payment services too (PSD2, Annex I), from a licensed institution, yours or a partner's (MiCA, Article 70). See the EU EMI guide and, for which coins providers may offer, the EU stablecoin payments guide.

UAE

Onshore, the Central Bank of the UAE (CBUAE) regulates payment tokens, stablecoins that track one fiat currency, under its Payment Token Services Regulation (Circular No. 2/2024, in force since 31 August 2024). It licenses their issuance, custody and transfer, and conversion, and Article 2 sets the limits:

  • Licensees may transfer only dirham tokens from licensed issuers, for any lawful purpose, or foreign-currency tokens from registered issuers used to buy virtual assets. Paying a supplier for goods in USDC is neither, and UAE sellers may take only dirham tokens from licensed issuers as payment for goods.

  • Apart from issuance, limited to UAE residents, the Regulation sets no limit on where a token is used or sent: a dirham token can pay a supplier abroad.

  • It covers services in or directed to the UAE, so providers abroad serving UAE companies are caught; DIFC and ADGM, the financial free zones, are outside it (UAE crypto licence guide).

  • The same services in other crypto used as a means of payment are banned, as are algorithmic stablecoins and privacy tokens, for VARA licensees too.

UAE-licensed virtual asset custodians, such as VARA's, can apply for a non-objection registration to hold and transfer foreign-currency tokens (Article 8); others need the CBUAE's custody and transfer licence, with regulatory capital of at least AED 1.5 million, or AED 3 million once monthly transfers average AED 10 million or more (Article 14). For payouts in fiat, see the UAE remittance guide.

UK

Where things stand on 7 October 2026:

  • Final rules, applying from 25 October 2027. Published on 30 June 2026, they include stablecoin issuance and custody, and applications run from 30 September 2026 to 28 February 2027 (overview). Registrations and payment licences do not convert automatically. Until then, crypto businesses need FCA registration under the Money Laundering Regulations (registration guide); for pound payouts, see the UK EMI guide.

  • Stablecoin payments: proposals only. They are to join future payment regulation, with FCA rules consulted on later (PS26/10). HM Treasury's consultation (14 July to 6 October 2026) notes that they are not regulated for payments today, and proposes bringing UK-issued ones, and possibly those of recognised jurisdictions, into payments regulation; others would stay in the crypto regime.

  • A draft amendment. A statutory instrument laid before Parliament, but not made by 7 October 2026, would take some UK-issued stablecoin activities out of dealing and arranging, and holding them briefly for payments out of safeguarding (PS26/18).

The Travel Rule

Details of payer and payee travel with each transfer between providers. In the EU, the Transfer of Funds Regulation, applicable since 30 December 2024, makes the sending provider attach both parties' names and wallet addresses, the originator's address and identity details, and legal entity identifiers (LEIs) where given, at any amount; the provider may not execute the transfer until it complies (Article 14). For a self-hosted wallet, one with no provider behind it, the provider keeps the data itself and, above €1,000, assesses whether its customer owns or controls the wallet.

EU rules also treat a crypto partner outside the Union that handles your transfers as a correspondent: check its licence and AML controls, and get senior management approval first (AML Directive, Article 19b). The UK (Money Laundering Regulations, Part 7A) and the UAE (Virtual Assets Travel Rule) have their own versions.

Decisions that shape the build

  • Who provides each leg. Account, conversion, custody, transfer and payout: you or a partner, and clients must be told which payment services a third party provides (MiCA, Article 70).

  • Coin, chains and corridors. An e-money token from an authorised issuer in the EU, a dirham token for payments onshore in the UAE; chains, which differ in fees and finality; a payout partner, or your own licence, in each corridor.

  • Quotes and books. A rate held during approval is a commitment until conversion; every leg belongs in one ledger, reconciled with the banks, the chain and each partner.

What drives the cost

The main cost drivers: licences and capital, or the partner agreements that replace them; custody, with its insurance and audits; liquidity, from conversion spreads to balances placed with payout partners; the number of corridors; compliance tooling for business verification (KYB), screening, the Travel Rule and monitoring; network fees on each transfer; and the operations team.

Common mistakes

  • Treating the chain as the payment. The fiat legs set the timing and most of the licensing.

  • A CASP authorisation alone in the EU. In the EBA's view, e-money token transfers have needed PSD2 cover since 2 March 2026.

  • USDC supplier payments from onshore UAE. Foreign-currency tokens may only buy virtual assets there.

  • No plan for returns. A rejected local payout comes back in fiat after the on-chain leg has settled.

What this means for your platform

Paynoramic's white-label B2B stablecoin payments platform gives companies USDC in custody wallets next to a euro account with its own IBAN. Finance teams pay suppliers in USDC or local currency by PIX, SPEI, SEPA and more, see the rate, fee and amount arriving before they pay, and keep the rate during a second approval. Each payment is screened, tracked and receipted with its invoice number, and the ledger syncs to Xero, QuickBooks, NetSuite or SAP. Travel Rule messaging runs through providers such as Notabene. We help you get the partner contracts and configure the platform for your licences. The ready platform goes live in about 30 days, with its full source code handed over. It is a starting point: corporate cards or a finance team web app come from the same modules.

Sources

Checked on 7 October 2026.

Written by

Paynoramic's Head of IT

Head of IT

Head of IT at Paynoramic, responsible for the module library every platform is built from. Has worked on payment, banking and workforce platforms for companies including American Express, Teya and Indeed Flex, and for a global card issuer-processor. Writes about what a fintech or crypto launch needs beyond the software: licensing, certification and the real cost.

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