Comparisons

Stablecoins vs CBDCs vs Linked Instant Payment Systems

Stablecoins, CBDCs and linked fast-payment systems all target slow cross-border payments. How each works, its status today and what a business can use.

Caio Barbosa

Founder & CO-CEO

Forbes Under 30. One of the leading voices in Fintech & Crypto in Brazil. Writes weekly about stablecoins, payments, and the future of financial infrastructure in Latin America.

Cover image for Lumx blog article: Stablecoins vs CBDCs vs Linked Instant Payment Systems
Cover image for Lumx blog article: Stablecoins vs CBDCs vs Linked Instant Payment Systems

Stablecoins are privately issued tokens, backed by reserves, that a business can use to pay across borders today. A CBDC (central bank digital currency) is digital money issued by a central bank, and the few that are live are domestic. Linked instant payment systems connect existing domestic rails with no new asset, so far between two countries or in design.

Best for: payments and treasury leads who keep hearing that a central bank project will replace what they use now, and want to know what is live.

How do stablecoins, CBDCs and linked payment systems compare?

Stablecoins, CBDCs, linked fast-payment systems and tokenized deposits compared by asset and user. Status read on November 1, 2026.

Approach

Example

What settles

Who can use it

Status on November 1, 2026

Stablecoin

USDC, USDT

A token issued by a company and backed by reserves

Any business, through a regulated provider, on public blockchains

In use, around the clock

Retail CBDC

Bahamas, Jamaica, Nigeria (live); digital euro (planned)

Central bank money for the public

Residents of the issuing country

Three countries have fully launched, all domestic. The digital euro is not issued: the ECB says it could be issued in 2029 if EU lawmakers adopt the regulation in 2026

Wholesale CBDC

mBridge

Central bank money on a shared ledger

Central banks and participating commercial banks

The BIS handed the project to its partners in October 2024, and its page lists the status as concluded

Linked fast-payment systems

UPI-PayNow (live), Nexus (planned)

No new asset: money of each domestic fast-payment system

Users of the systems that connect

UPI-PayNow launched on February 21, 2023. Nexus has six jurisdictions and a technical operator appointed on February 9, 2026, with no live payment announced

Tokenized deposits and reserves

Project Agorá

Bank deposits and central bank reserves, both tokenized, on a shared platform

Banks and wholesale institutions

A prototype, with real-value testing in July 2026

Domestic fast payments

The national systems of Brazil, Mexico and Colombia

Bank money, settled by the central bank's own system

Anyone with a local bank account

Live, with no cross-border leg

Stablecoin vs CBDC: who issues and who can hold

A stablecoin is issued by a private company, and the holder has a claim on that issuer, backed by reserves. A CBDC is issued by the central bank, so the holder has a claim on the state's own money. Access follows. A business reaches a stablecoin through a provider. A retail CBDC is offered to residents of the country that issues it, and a wholesale one only to institutions that settle with the central bank.

The Atlantic Council tracker, read on November 1, 2026, counts three fully launched CBDCs: the Bahamas, Jamaica and Nigeria. All three are domestic and aimed at residents, so a foreign company paying a supplier cannot use them for the cross-border leg. For the token a business holds, see what a stablecoin is and USDC versus USDT for payments.

Where the CBDC projects stand

The digital euro is the furthest along in a rich economy. The ECB says the preparation phase ran from November 2023 to October 2025 and that issuance "could" happen during 2029 if EU lawmakers adopt the regulation in the course of 2026.

Drex was Brazil's attempt. Exame reported on November 12, 2025 that central bank president Gabriel Galípolo said that after four years the pilot technology had not proved viable, and that pilot participants were told on November 4 the test platform would shut down. Pix (Brazil's instant payment system, run by the Central Bank), not Drex, is what Brazilians use.

mBridge is the cross-border one. The BIS describes a platform shared by the central banks of China, Hong Kong, Thailand and the United Arab Emirates, joined by Saudi Arabia in 2024, which reached a minimum viable product in mid-2024. The BIS then handed the project to its partners in October 2024. A company does not hold mBridge money.

Tokenized deposits and tokenized reserves

Both put regulated bank money on a shared programmable ledger. A tokenized deposit is a commercial bank deposit recorded as a token. Tokenized reserves are the central bank's reserve balances in the same form. Project Agorá combines the two on one platform for wholesale cross-border payments, with eight central banks and more than 40 financial institutions taking part.

The prototype settles atomically across currencies: both legs of an FX trade settle together or neither does. That addresses the settlement risk behind Herstatt risk. Real-value testing ran in July 2026. It is plumbing between banks, not built for a company paying a contractor.

What is a linked instant payment system, and is Nexus live?

A linked system connects domestic fast-payment rails so a payment can start on one and end on another, with no new money.

Some links are already live. UPI-PayNow joined India's UPI and Singapore's PayNow on February 21, 2023, according to MAS, and the first Singapore senders were limited to SGD 200 per transaction. It is a retail link between two countries, not a way for a business to reach Latin America.

Nexus is the multilateral version. The BIS announced the blueprint on July 1, 2024. Each system connects once and reaches every other member. The Bank of Thailand's release of April 3, 2025 reported that the central banks of India, Malaysia, the Philippines, Singapore and Thailand had incorporated Nexus Global Payments in Singapore as a not-for-profit to run the scheme. The company's news page adds that Indonesia became the sixth jurisdiction on February 2, 2026, and that a PayNet and NETS joint venture won the technical operator contract on February 9, 2026, the latest item on the page. No live payment is announced.

For a payout into Brazil, Mexico or Colombia, neither link adds anything today.

Domestic fast payments work, and the cross-border leg does not

Fast settlement is a solved problem inside one country. Pix in Brazil and SPEI (Mexico's interbank transfer system, run by Banxico) run 24/7/365 with no cut-off. Bre-B (Colombia's instant payment system) caps a transfer at 1,000 UVB, about COP 12.1 million, under Banco de la República's Circular Reglamentaria Externa DSP-465.

What none of them does is cross a border: a payer in Frankfurt has no account on Pix. Among the new rails, only stablecoins are open to businesses today. The existing fill is the bank wire through correspondent banks, at 1 to 5 business days per the Lumx cut-off page. Stablecoin corridors describe the stablecoin pattern, and stablecoins versus traditional rails puts numbers on it.

On Lumx, the payout runs over Pix, SPEI, Bre-B or ACH Colombia from the customer's wallet balance, so the payer abroad never needs an account on the local rail.

Bank rail upgrades help, and are not enough

Banks are not standing still: SWIFT payments now carry a UETR tracking reference and the industry is moving to ISO 20022 messages. The FSB set cross-border targets for the G20 and said in its October 9, 2025 progress release that most are due by end-2027 and that satisfactory improvement at the global level in line with that timetable is unlikely. It adds that remittance speed has improved while average cost remains high. A wire into a Lumx-supported USD account still takes 1 to 5 business days over SWIFT, and a USD ACH payment 1 to 2, per the Lumx cut-off page.

<!-- OPERATOR PARAGRAPH --> I would not put any official-sector project on a payments roadmap for 2027. The useful test is whether I can sign up for it this quarter, and for CBDCs and linked systems the answer is no. What I would do instead is design the payout flow so the cross-border leg can be swapped: keep beneficiary data, compliance checks and reconciliation separate from the asset that crosses the border. If a linked system or a tokenized-deposit network ever reaches business users, that is a change of one leg, not a rebuild.

Which option can a business use today?

What a business can use for a cross-border payment today, by option.

Option

Open to a business today

Reaches

Time to the recipient

Stablecoin payout through a provider

Yes

Any corridor the provider covers with a local rail

Instant on Pix, SPEI and FPS; USD ACH 1 to 2 business days, per the Lumx cut-off page

Bank wire

Yes

Almost everywhere

SWIFT 1 to 5 business days, per the Lumx cut-off page

CBDC

Retail CBDCs are domestic; digital euro and mBridge not open

Residents of the issuing country

Not applicable

Linked systems

UPI-PayNow is live but retail; Nexus is not live

UPI-PayNow: India and Singapore. Nexus: Asian central banks, with ECB and FLAR exploratory

Not applicable

Tokenized deposits (Agorá)

No, prototype for banks

Not applicable

Not applicable

A company that pays in several countries ends up with a wire where a stablecoin cannot reach and a stablecoin payout elsewhere. The comparison of the two for a supplier payment is in stablecoins versus SWIFT, and the broader one is stablecoins versus traditional payments. The destination side is on USDC to BRL, USDC to MXN and USDC to COP.

Will CBDCs replace stablecoins?

No, because they serve different users with different money. The digital euro and the live retail CBDCs are domestic, and the BIS wholesale projects are built for banks. None is aimed at a company paying a contractor abroad, so they coexist.

A stablecoin is not a bank deposit, so reserve quality, depeg risk and the provider's custody are the questions to ask. Regulation of issuers and providers is covered in are stablecoin payments safe.

The rules for stablecoins are written and still being implemented. In the United States, the GENIUS Act (Public Law 119-27, 2025) set the federal framework, and on September 29, 2026 the Federal Reserve Board published a proposed rule on applications by bank subsidiaries to issue payment stablecoins, with comments due November 30, 2026 (Federal Register 2026-19899). In the EU, MiCA, Regulation (EU) 2023/1114, has applied to stablecoin issuers since June 30, 2024. In Brazil, Resolução BCB 520 and 521 of November 10, 2025 set the regime for virtual-asset providers; Lumx has applied for authorization and operates under the transition rules.

When a stablecoin is the wrong tool

Stablecoins are the wrong tool when the payer or the payee cannot touch one. A supplier on the Chinese mainland is paid in USD by wire, because the People's Bank of China's notice Yinfa [2026] No. 42 of February 6, 2026 (summary) bars foreign crypto services to people there. Mainland China and Hong Kong are different cases: on Lumx, a Hong Kong supplier is paid USDT as a transfer to an external wallet, and Hong Kong customers are onboarded by reverse solicitation, without a local license.

They are also the wrong tool for large interbank settlement, where the point is central bank money and atomic finality. That is what tokenized reserves and wholesale CBDCs are for, and a company has no seat there.

And when both ends sit in linked systems, as UPI-PayNow users do today, a bank-led fast payment may beat a token.

What the cross-border leg looks like on Lumx

Lumx is stablecoin payments infrastructure for businesses that move money between Latin America and the rest of the world: one API to collect, hold, convert, and pay out in BRL, MXN, COP, USD, EUR, and GBP or in USDC and USDT, over local rails such as PIX, SPEI, PSE, Bre-B, ACH, FEDWIRE, SEPA, and Faster Payments, with SWIFT and on-behalf-of payments and collections (POBO and COBO) in USD, EUR, and GBP, plus named virtual accounts, custodial wallets, and KYB/KYC built in.

A payment uses the three transaction types in the docs: an on-ramp turns local fiat into stablecoin, a transfer moves stablecoin between wallets, and an off-ramp converts stablecoin to fiat and sends it to a registered destination. Every customer gets a wallet on each supported blockchain, and it is enabled only after KYB (know your business) or KYC (know your customer) approval. The wallet holds USDC and USDT, and Lumx subsidizes the network fee on its legs, so the customer does not need ETH or TRX.

The local payout side covers Pix, SPEI, Bre-B or ACH Colombia, SEPA and Faster Payments, with SWIFT in USD for the rest. A payout over Pix, SPEI or Bre-B has no fee taken from the amount that arrives. The global payments page, the coverage map and the operator map show the current list.

Methodology and sources

Product behavior was read from the Lumx documentation on November 1, 2026: coverage, wallets, transactions, exchange rates, accounts and payment rail cut-off times.

Nexus was read on the BIS release of July 1, 2024, the Bank of Thailand release of April 3, 2025 and the Nexus Global Payments news page, all on November 1, 2026. UPI-PayNow was read on the MAS release of February 21, 2023. Launched retail CBDCs are counted on the Atlantic Council CBDC tracker. mBridge was read on the BIS project page and Project Agorá on the BIS project page, both on November 1, 2026. The digital euro was read on the ECB's progress page the same day. The bank rail targets come from the FSB release of October 9, 2025.

The end of the Drex platform is attributed to Exame, November 12, 2025, which quotes Galípolo directly and reports the November 4 notice to participants. The Bre-B cap is Circular Reglamentaria Externa DSP-465 of Banco de la República, and the PBoC notice links to a secondary summary.

Verified on November 1, 2026. Operational context, not legal, tax, or investment advice.

Cover photo: Nate on Unsplash.

  • What is the difference between stablecoins and CBDCs?

    A stablecoin is issued by a private company and backed by reserves. A CBDC is issued by a central bank, so the holder has a claim on central bank money. Businesses can use stablecoins today through a provider, while live retail CBDCs are domestic and wholesale ones are for banks. Lumx works with USDC and USDT in custodial wallets.

  • Is Project Nexus live?

    Not for business payments as far as public sources show. The bilateral UPI-PayNow link between India and Singapore has run since February 21, 2023, but it is retail. Nexus Global Payments appointed a technical operator on February 9, 2026, the latest item on its news page. Lumx connects to neither: it pays out over Pix, SPEI, Bre-B, ACH Colombia, SEPA and Faster Payments, and over SWIFT in USD.

  • What happened to Brazil's Drex?

    Exame reported on November 12, 2025 that central bank president Gabriel Galípolo said the pilot technology had not proved viable after four years. No digital real exists, so Brazilians and companies pay over Pix. A Lumx off-ramp to a Brazilian recipient uses Pix, which runs 24/7/365 with no cut-off.

  • Can a business use a CBDC or Nexus to pay a supplier in Brazil, Mexico or Colombia today?

    No. mBridge is for participating banks, Nexus has no live business payments, the digital euro is not issued, and the CBDCs that are live serve residents of their own countries. The routes open to a company are a bank wire or a stablecoin converted to local currency and paid over a local rail, which is what Lumx does.

  • Do Pix and SPEI make stablecoins unnecessary?

    Not for cross-border payments. Pix and SPEI settle fast inside Brazil and Mexico, but a payer abroad has no account on them, so something has to carry the value across the border first. A stablecoin does that and the local rail finishes the payment. Lumx runs both legs: USDC or USDT in, then an off-ramp on the local rail.

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