Convergence · Stablecoins
Stablecoins explained: the dollar rail inside crypto
Payment stablecoins are fiat-referenced tokens used for trading, settlement, remittances, and dollar access where local banking is limited. They are issuer liabilities backed by reserve assets—not central-bank money and not the same legal object as a bank deposit token.
Issuer-reported supply
Each figure is the issuer’s own published number, quoted with the issuer’s label and the as-of date on its page (retrieved October 8, 2026, PT). Dates and measures differ—weekly snapshots, daily feeds, and month-end accountant reports—so these rows should not be added together or read as a market total. They are issuer statements, not independent verification.
| Stablecoin (issuer) | Figure | Issuer’s label | As of | Source |
|---|---|---|---|---|
| USD₮ (Tether) | $184.16B | Net circulation | Oct 8, 2026, 5:56 PM PT (Oct 9, 00:56 UTC) | tether.to/en/transparency |
| USDC (Circle) | $71.9B | USDC in circulation | Oct 19, 2026 | circle.com/transparency |
| EURC (Circle) | €440.7M | EURC in circulation | Oct 19, 2026 | circle.com/eurc |
| USDG (Paxos) | 3,340,650,602 tokens | Redeemable tokens outstanding (Paxos Digital Singapore Pte. Ltd.; KPMG-examined report) | Aug 31, 2026, 5:00 PM ET | paxos.com/usdg-transparency |
| PYUSD (Paxos, for PayPal) | 2,886,948,845 tokens | Redeemable tokens outstanding (KPMG-examined report) | Aug 31, 2026 | paxos.com/pyusd-transparency |
Official third-party estimate: The Federal Reserve’s May 2026 Financial Stability Report put the stablecoin level at about $320 billion, “concentrated among the two largest issuers.” The BIS Annual Economic Report 2026 cites around $320 billion as of end-May 2026. These estimates are based on third-party market data cited in the reports. Their scope and date differ from the issuer figures above, so the two should not be combined or compared as if they shared one date.
What a payment stablecoin is—and is not
It is
It is not
- Central-bank money or automatically a bank deposit.
- Risk-free cash or a guarantee against depeg, freeze, or issuer failure.
- The same legal object as a tokenized commercial-bank deposit.
Teaching line: an on-chain transfer does not guarantee redemption if an issuer fails, freezes an address, or cannot liquidate reserves.
Regulation intersection
| Jurisdiction / link | Educational map |
|---|---|
| United States | GENIUS Act established a federal payment-stablecoin framework on July 18, 2025; implementing rules are still being written through 2026. |
| European Union | MiCA covers EMT / ART and CASP themes; the transitional period ended July 1, 2026. On Oct 14, 2026, the European Banking Authority classified USDC as the EU’s first significant e-money token under MiCA. From Nov 12, 2026, the EBA and France’s ACPR supervise it jointly: the EBA covers own funds, reserves, liquidity and recovery and redemption plans; the ACPR covers the rest (EBA press release, Oct 14, 2026). |
| Systemic connection | Reserve assets often include cash equivalents or Treasury bills, linking stablecoin float to traditional money markets. |
Regulation themes → · U.S. map → · EU MiCA map → · GENIUS Act summary → · UK stablecoin rules → · Regulation tracker → · Payment networks →
Where stablecoins show up
- Trading and liquidity: quote currency across centralized and decentralized venues.
- Card and network settlement: Visa’s September 8, 2026 press release said its stablecoin settlement volume had passed a $20B annualized run-rate, up more than 15x year over year (Visa newsroom). An earlier milestone: Visa’s April 29, 2026 announcement described nine chains and a $7B annualized run-rate at that date. On Oct 15, 2026, Visa moved Visa Direct stablecoin prefunding from pilot to commercial production, with Inyo Global as the first enabler; eligible clients can prefund cross-border Visa Direct payouts with USDC in near real time (Visa newsroom, Oct 15, 2026).
- Cross-border payouts: a fiat → stablecoin → fiat middle leg; corridor fees should be benchmarked against World Bank data.
- Emerging-market dollar access: a “dollar without a U.S. bank account” behavior, not proof that on-chain volume equals remittances.
- DeFi and treasury operations: collateral, runway, and settlement inventory.
Keep the taxonomy clean
| Question | Payment stablecoin | Tokenized bank deposit | Retail CBDC |
|---|---|---|---|
| Liability | Issuer under contract / statute | Commercial bank | Central bank |
| Par design | Target plus reserves | Bank liability at par | Central-bank design at par |
| U.S. policy sketch | GENIUS payment stables | Banking and deposit rules | Retail CBDC halted; FedNow is RTP, not a CBDC |
For builders and operators
A useful implementation brief names the issuer, reserve and attestation source, chain, redemption path, freeze controls, licensing perimeter, and the date behind every supply figure.
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