OTC FX for Payment Providers: Bank vs Stablecoin Routes on Cost and Timing

A stablecoin proposal can look cheaper and faster before it has priced the payment a PSP actually owes. A small network fee and a quick token confirmation describe part of the journey. They do not establish how many euros will reach a recipient’s bank account, or when those euros will become usable.

Comparing bank and stablecoin cross-border payments therefore starts with a common obligation: turn the same available funding into the required recipient funds. The unit of comparison is the completed payout—not the transfer in the middle.

OTC FX is a trading arrangement, not an alternative to banks

OTC foreign exchange is currency trading arranged bilaterally between counterparties outside an organised exchange. Banks participate alongside non-bank liquidity providers, brokers and payment businesses. “OTC” describes how the trade is organised; it does not identify the settlement asset or imply that banks have been removed.

For PSPs, financial institutions and corporate treasuries, institutional FX liquidity services provide access to currency prices and execution. Their usefulness depends on whether a price is executable for the required amount, and on the funding, credit and settlement terms attached to it. Access to an FX quote does not, by itself, promise delivery to a beneficiary.

The provider’s role also matters. The FX Global Code distinguishes a principal, which trades for its own account and takes risk, from an agent, which executes under a client mandate without taking market risk on the order. That distinction helps establish who is providing the price and whose performance the PSP relies on. It is more informative than a bank/non-bank label alone.

Two routes, one fiat obligation

Consider a PSP funded in US dollars whose recipient needs euros in a bank account. Both arrangements can serve that requirement, but conversion and payment occur at different points.

• Bank FX route: the PSP funds or uses an agreed credit arrangement, executes USD/EUR conversion, and sends the euro proceeds through the applicable banking and payout arrangements. Intermediaries may be involved, depending on the route.
• Stablecoin-mediated route: the PSP’s dollars acquire a token, the token moves to an exit provider, and the exit arrangement converts it into funds for euro payout. If redemption delivers dollars rather than euros, a further currency conversion is still required.

A dollar-referenced stablecoin does not eliminate the economic conversion from dollars to euros. It changes the asset used for part of the journey and may change where conversion is priced and performed. Nor does its reference currency guarantee a one-for-one executable acquisition or redemption price.

Banks can participate in either arrangement: supplying FX, holding funding or payout accounts, or executing local payments. The meaningful comparison is between two complete service arrangements, not between mutually exclusive banking and blockchain systems.

Compare net recipient proceeds, not transfer fees

For a fixed funding budget, the clearest price measure is net recipient proceeds: the amount of usable payout currency left after the complete route. For a fixed recipient obligation, the equivalent measure is the total funding required to deliver it. These are two views of the same economics.

Follow executable prices and applicable charges from the starting balance to the recipient balance. Conversion compensation may already be embedded in the exchange rate, as the FX Global Code recognises. Add transfer, intermediary and payout charges where they apply, but do not subtract them again if they are already included in the quoted proceeds.

Quote quality matters as much as fee coverage. An indicative reference rate is not interchangeable with a firm price for the PSP’s required amount. Quotes also need compatible timing, funding conditions and delivery terms.

A hypothetical $1 million payment

Suppose both proposals start with $1,000,000 available in the same funding account. Assume their stated prices are guaranteed for the complete transaction, all charges are paid from that budget, and there are no charges beyond those described:

• Bank route: an executable rate of €0.9200 per dollar, including FX compensation, produces €920,000. A €200 payout charge leaves the recipient with €919,800.
• Stablecoin route: the entry price and all funding, acquisition and token-transfer charges leave 999,000 dollar-referenced tokens available at the exit. An executable exit rate of €0.9220 per token, including conversion compensation, produces €921,078. A €300 payout charge leaves €920,778.

The stablecoin route delivers €978 more under these assumptions. Its advantage comes from the combined entry and exit economics after charges—not from the blockchain fee in isolation. Change the executable prices or charges, and the result can reverse.

If the recipient instead must receive a fixed €920,000, compare the total dollar funding each provider requires to deliver that amount. A lower advertised fee is no benefit if additional deductions leave the PSP having to fund a shortfall.

The clock stops at usable recipient funds

The price example establishes a difference in proceeds. It establishes nothing about speed until both proposals specify when the beneficiary can use the money.

FX execution agrees the trade’s terms. The value date is the agreed date for settling the currency obligations. Neither event necessarily means that the recipient’s account has been credited. Similarly, blockchain confirmation establishes a token-transfer milestone, not completion of subsequent conversion and fiat payout.

End-to-end payout timing includes whatever funding, execution, transfer, conversion, checks and recipient-credit steps the arrangement requires. The starting point must be comparable too: timing one route from an already-funded wallet and another from the initial bank-funding instruction hides part of the first route’s journey.

Return to the hypothetical payment. Suppose both providers commit to next-business-day recipient credit, while the token transfer can finish today. The stablecoin route’s €978 advantage is a price benefit; the earlier token confirmation does not create a recipient-speed benefit.

A token transfer operating outside banking hours can still encounter an unavailable conversion service, insufficient exit liquidity or a closed local payout window. Conversely, a provider with available destination funds and an operating payout service may be able to credit the recipient sooner. That capability belongs to the complete arrangement, not automatically to the token.

Who funds the gap—and who owes the payout?

The remaining question is what the PSP must commit to obtain the quoted result. A route that requires funds to be placed in advance is not economically identical to one offering credit or later funding. Prefunding ties up working capital; maintaining destination-currency balances can support faster payouts but requires someone to finance and replenish them. Either bank or stablecoin arrangements can carry these obligations.

This matters to the hypothetical €978 saving. If obtaining it requires additional prefunding, operational work or exposure that the bank arrangement does not require, the saving is the amount available to compensate for those differences—not an unconditional reduction in total business cost.

Liquidity must also be available where the obligation arises. An attractive token-entry price is insufficient if the exit provider cannot convert the required amount on acceptable terms. Unless the exit price is secured, the final fiat proceeds can change between entry and conversion. A quote for the first leg should not be mistaken for a guarantee of the whole payout.

Responsibility follows the contracts and payment sequence. FX settlement risk includes paying away the currency sold without receiving the currency bought. A token-mediated route can add issuer, custody and conversion dependencies. If the PSP holds the token, those dependencies affect it differently than if a provider undertakes to deliver a fixed euro amount without the PSP taking possession. In the latter case, the PSP still relies on that provider’s performance and contractual protections.

Technical access is not commercial access. A wallet capable of receiving tokens does not establish eligibility for conversion, sufficient exit liquidity or access to local bank payout. The arrangement must work for the PSP’s entity, corridor, permitted activities and operating capacity.

The decisive distinction is whether a supplier provides one execution leg or accepts responsibility for the completed payment. A firm FX price can be valuable without being an end-to-end payout commitment. Treasury needs to know which it is buying, who owes each amount, and what happens if a leg is delayed or fails.

Conclusion

OTC FX can sit inside either a bank-led or stablecoin-mediated payment route. Compare them on net recipient proceeds—or funding required for a fixed payout—then test the delivery commitment and obligations behind the quote. The stronger proposal is the one that delivers the required usable fiat at an acceptable total cost, time and level of exposure, not the one with the cheapest or fastest intermediate transfer.

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