Deep dive: stablecoins vs bank rails

Stablecoins vs bank rails: what's real

My view as of October 2026: for a business payment, stablecoins beat a bank wire across borders, roughly tie a good non-bank FX provider, and lose to ACH and real-time payments at home. Where they clearly win is time and reach: weekends, corridors banks serve badly, and recipients who want dollars. The weakest part of the evidence is the price, because no orchestrator or off-ramp publishes an all-in rate card for a corridor. The stablecoin costs below are my ranges, built from assumptions about each hop.

$50,000 to a supplier in Mexico

Back to the importer, at an illustrative 18.50 pesos per dollar for easy arithmetic (the rate on October 13, 2026 was about 18.23): MXN 925,000 at the mid-market rate. The supplier wants pesos by SPEI.

The stablecoin route, hop by hop:

Screening and Travel Rule data are inside the orchestrator's fee. The orchestrator's 0.1% comes from one outside review I couldn't verify, and the 0.5% is my assumption. The off-ramp spreads are my assumptions too, partly below the 0.5-1.5% one payout vendor quotes for Mexico; vendors claim 0.1-0.5% all in, which I couldn't trace to a rate card.

Against the other routes:

What I read from it:

• The chain: under a hundredth of a percent in every case. The orchestrator's markup and the off-ramp's spread are 90% or more of the stablecoin cost.
• Against the others: the typical case costs about a third of the average wire and about the same as the non-bank. The high case costs more than many wires.
• Speed: at 3.9%, $50,000 earns about $5 a day, so arriving two days sooner is worth about $11. The value is arriving on a Sunday, and knowing it will.

Other corridors change the answer. To the euro area, the same non-bank's price was 0.24-0.31%, which a stablecoin route will struggle to beat. To Brazil it was 0.82-0.89%, which leaves room, but Brazil's FX rules apply. To the Philippines, InstaPay for Business caps a transfer at ₱500,000, so $50,000 needs several transfers, and I found no verified business off-ramp rate there.

A $50,000 invoice inside the US

At home, a stablecoin costs more than ACH and RTP, takes longer than RTP because it needs two bank legs, and drops the return rules and remittance data. Stripe also caps stablecoin payments at $10,000 per transaction, so this invoice would take at least five. A day of interest on $50,000 is worth about $5, the most speed can be worth here. The clear edge is a payer who already holds stablecoins and wants to pay on a weekend. More on receivables in order to cash.

Where stablecoins win, and where they don't

Nobody measures B2B stablecoin payments well. The best-known estimate, from McKinsey and the analytics firm Artemis, puts them at about $226 billion a year at the end of 2025, roughly 0.01% of business payments worldwide. Its method isn't public, and single companies report volumes that don't fit it: one Mexican exchange claims a figure over a third of that size. I'd treat it as an order of magnitude. Raw on-chain volume is mostly trading; real payments were about 1% of it in 2025.

Banks are doing both: tokenized deposits and bank coins

Banks answered with their own ledgers first. JPMorgan's Kinexys averages more than $7 billion a day on a permissioned blockchain where clients hold tokenized deposits, and JPMorgan also issues a deposit token for institutional clients on Base, a public chain. Citi's Token Services went live for a bank client in Thailand on July 9, 2026, tied to its 24/7 dollar clearing. HSBC's tokenised deposit service reportedly reached the US in April 2026. Swift is piloting a shared ledger with 17 banks, and The Clearing House plans a tokenized-deposit network between banks for 2027. Kinexys moves in a day what all B2B stablecoin payments are estimated to move in about a week and a half, though much of it is interbank, FX and repo.

Then banks started issuing stablecoins too. On September 1, 2026, 21 banks including Bank of America, Citi, Goldman Sachs and Wells Fargo committed to form a company to issue a stablecoin, with a dollar token planned for the first half of 2027. The Zelle owner banks launched ZelleUSD in June 2026, SoFi Bank launched SoFiUSD in May, and Anchorage Digital, a federally chartered bank, issues Tether's US coin. The market isn't splitting into deposits for banks and coins for everyone else: both kinds of issuer want the same flows.

For a B2B product, the practical difference is the customer's bank. A large corporate whose bank runs a token network gets 24/7 settlement without leaving the banking system; a company whose bank doesn't is back to a stablecoin route or a non-bank.

What card networks mean by stablecoin settlement

When Visa or Mastercard says it settles in stablecoins, it means banks settle with the network in coins; merchants and cardholders see no change. Since December 16, 2025, US banks can settle with Visa in USDC on Solana seven days a week, and Visa's run rate passed $20 billion a year by September 8, 2026, a small fraction of a percent of its volume. Since June 3, 2026, Mastercard lets issuers and acquirers settle in six coins, including USDC, PYUSD, USDG and RLUSD, on eight networks, with its rules and disputes unchanged. The banks gain by parking less money over weekends.

Questions to ask a stablecoin provider

1. What's the all-in price from dollars in to local currency out, hop by hop, including the spread against the mid-market rate at payout?
2. Which coin, issuer and chain, and is it the issuer's own token on that chain? Can you redeem directly, and will the issuer be permitted from January 18, 2027?
3. Who holds the coins, the dollars and the licence at each step, including the off-ramp in each country and its bank?
4. What does your contract say about wrong addresses, freezes, a failed off-ramp and your own insolvency, and are customer coins held in the customer's name?
5. How does the invoice reference travel, and does "settled" mean on-chain, in your books, or pesos in the supplier's account?
6. What's the fallback when a chain halts or an off-ramp stops paying?