Tokenized Treasuries vs Stablecoins: Choosing How to Hold Dollars On-Chain
Two dollar tokens can look identical on-chain and be regulated completely differently. How stablecoins, tokenized treasuries, and DeFi yield dollars differ in 2026, from a team that builds yield-bearing dollar infrastructure.
It comes down to spend versus earn. A fiat stablecoin (USDC, USDT) is a 1:1 payment token anyone can hold that, by law, pays no yield, so use it to move money. A tokenized treasury or money-market fund (Circle's USYC, BlackRock's BUIDL, Franklin's BENJI) is a security paying the Treasury-bill rate, around 3.3 to 3.7% in mid-2026, but it is limited to eligible, whitelisted investors and moves less freely. DeFi yield dollars like Ethena's sUSDe and Sky's sUSDS earn permissionlessly but are neither payment stablecoins nor registered funds, and their yield carries real risk. Note that yield-bearing stablecoin can mean any of the three.
Protofire builds yield-bearing dollar and stablecoin infrastructure, so we have a commercial interest in this category. We do not issue any of these products (USDC, BUIDL, USYC, sUSDe) and are not affiliated with their issuers. Figures come mostly from rwa.xyz and DefiLlama, pulled in July 2026, and move daily. See our other decision guides, including stablecoin models and RWA token standards.
At a glance
| 01Fiat stablecoins | 02Tokenized treasuries/MMFs | 03DeFi yield dollars | |
|---|---|---|---|
| Legal type | Payment token | Security (fund or note) | DeFi token |
| Yield to holder | None (prohibited by law) | ~3.3-3.7% (Treasury-bill rate, net of fees) | Variable: sUSDe ~4% now (to 20%+), sUSDS ~3.75% |
| Who can hold | Anyone, permissionless | Eligible, whitelisted investors | Anyone, permissionless |
| Transferability | Free, instant | Whitelist-gated, redemption windows | Free, composable in DeFi |
| Backing | Issuer reserves (cash + Treasuries) | Custodied US Treasuries in a fund | Crypto collateral, basis trade, or RWAs |
| Examples | USDC, USDT | USYC, BUIDL, BENJI, USDY | sUSDe, sUSDS |
| Scale (mid-2026) | ~$300B | ~$16B | single-digit $B |
| Best for | Payments, settlement, collateral | Earning on parked dollars, compliantly | On-chain yield with risk appetite |
How big is each category?
Approximate size of each category as of mid-July 2026, on a log scale (bars are relative, not linear). Stablecoins (~$300B, per rwa.xyz) dwarf the yield-bearing categories: tokenized US Treasuries are about $16 billion and DeFi yield dollars roughly $9 billion, so the earning dollar is still a small fraction of the payment dollar. Figures move daily.
The three on-chain dollars
Fiat stablecoins
- +Permissionless: anyone can hold, send, and receive with no whitelist or KYC at the token level
- +The most liquid on-chain dollar by far (~$300B), accepted across DeFi and by payment rails
- +A pure 1:1 payment instrument, ideal for settlement, transfers, and collateral
- −By law pays holders no yield: the US GENIUS Act and EU MiCA both prohibit interest on payment stablecoins
- −Trust concentrates in the issuer and its reserves; you hold a claim on a company, not a fund
- −Idle balances earn nothing, which is why treasuries and fintechs look past them for yield
A fiat stablecoin (USDC, USDT, and roughly 119 others totaling about $300 billion, with USDT and USDC around 88% of it) is a token pegged 1:1 to a currency and redeemable from the issuer. It is the on-chain equivalent of cash: permissionless, freely transferable, and the default unit of account across exchanges, DeFi, and stablecoin payment rails. If the job is to move or settle value, this is the instrument.
The defining limit is yield: a regulated payment stablecoin cannot pay its holders interest. The US GENIUS Act and EU MiCA both prohibit it, so the issuer keeps the yield on the reserves and the holder gets none. That is fine for money in motion and a poor deal for money at rest, which is the gap the other two categories fill.
Tokenized treasuries & MMFs
- +Pays the short-term Treasury yield, around 3.3 to 3.7% in mid-2026 net of fees, passed through to holders
- +Backed by real, custodied US Treasuries in a regulated fund or note wrapper, with attestation
- +The compliant way for a treasury, fund, or fintech to earn on idle dollars on-chain
- −A security, so restricted to eligible, whitelisted investors (accredited or qualified purchasers, or non-US persons per wrapper)
- −Not a free-moving payment rail: transfers are gated to approved wallets and redemption has windows
- −Wrappers differ in ways that matter (Reg D private fund vs registered '40 Act MMF vs offshore note)
A tokenized treasury or money-market fund is a tokenized share of a fund, or a note, that holds short-dated US Treasuries and passes the yield through. As of mid-2026 the category is about $16 billion, led by Circle's USYC (~$3.0B, a Cayman fund for non-US persons), which overtook BlackRock's BUIDL (~$2.6B, a US private fund) in March 2026; Ondo's USDY (~$2.2B) is a tokenized note rather than a fund, and Franklin Templeton's BENJI is a registered money-market fund at about $1.6B on-chain. Yields track Treasury bills, near 3.3 to 3.7% now, down from about 5% in 2024.
The catch is that these are securities, not payment tokens. Holding one means passing KYC and sitting on the issuer's whitelist, and eligibility is scoped by wrapper: accredited or qualified purchasers for the US funds, non-US persons for USYC and USDY. Transfers are limited to approved wallets and redemption runs on the fund's schedule and banking hours, so you do not get the free, instant movement of a stablecoin. The wrapper is the fine print: a Reg D private fund (BUIDL), a registered '40 Act MMF (BENJI, WTGXX), a Cayman Reg S fund (USYC), and a note (USDY) all carry different investor, disclosure, and redemption rules. This is the instrument for earning on dollars you are parking, not spending.
DeFi yield-bearing dollars
- +Permissionless: no whitelist, anyone can hold and earn, composable across DeFi
- +Yield can run well above Treasury bills when conditions favor it: sUSDe has ranged from about 4% to over 20% since 2024
- +On-chain and transparent, with the yield source visible rather than kept by an issuer
- −Not a payment stablecoin and not a registered fund, despite the stablecoin label
- −Yield carries real risk: sUSDe's is a variable funding-rate trade that can fall toward zero or turn negative
- −Smart-contract, collateral, and de-peg risk that a Treasury-bill fund does not have
A third category markets itself as yield-bearing stablecoins but is legally neither a payment stablecoin nor a registered fund. Sky's sUSDS (~$5B) pays a governance-set Sky Savings Rate near 3.75%, funded from the protocol's collateral and real-world assets, and behaves like a steady savings rate. Ethena's sUSDe (the staked portion of about $5.5B in USDe) earns a variable, funding-rate-driven yield, near 4% in mid-2026 but historically ranging from about 4% to over 20%.
The yield here is a funding-rate trade, so it is also the risk: sUSDe's return depends on perpetual-futures funding staying positive, and when funding compresses or flips it falls toward zero or negative, with collateral and de-peg risk that a Treasury fund does not have. These are DeFi instruments, permissionless and composable, but calling them stablecoins hides that you are holding a market position rather than a bank-like dollar. They belong in the comparison because product teams reach for them as an earn option, and they should be chosen with the risk understood. For the peg-design view of this category, see our stablecoin models guide.
The main tokenized-treasury products
| Issuer | Wrapper | ~AUM | Who can hold | Yield | Chains | |
|---|---|---|---|---|---|---|
| USYC | Circle | Cayman Reg S fund | ~$3.0B | Non-US, $100k min | Accruing NAV | BNB, Ethereum, Solana +2 |
| BUIDL | BlackRock / Securitize | BVI private fund (Reg D) | ~$2.6B | US qualified purchasers, $5M | Distributing (monthly) | 8, incl. Ethereum, Solana |
| USDY | Ondo | Tokenized note | ~$2.2B | Non-US, 40-50d lock-up | Accruing (rUSDY rebases) | 12, incl. Ethereum, Stellar |
| BENJI | Franklin Templeton | Registered '40 Act MMF | ~$1.6B on-chain | US retail ($20) + institutional | Distributing (monthly) | 9, incl. BNB, Stellar |
| WTGXX | WisdomTree | Registered '40 Act MMF | ~$0.77B | US retail ($1) + institutional | Distributing (elective) | 8, incl. Ethereum, Solana |
| USTB | Invesco / Superstate | Delaware-trust fund (Reg D) | ~$0.69B | US accredited / qualified | Accruing NAV | Ethereum, Solana, Plume |
Approximate on-chain AUM as of mid-July 2026, per rwa.xyz; figures move daily. Only BENJI and WTGXX are US-registered money-market funds; BUIDL is a private fund, USDY a note, USYC a Cayman fund, and USTB a Delaware-trust fund, so "money market fund" does not describe all of them. BENJI's ~$1.6B is its institutional token; the whole Franklin platform is about $2.4B. Newer entrants are growing fast, including Janus Henderson's JTRSY (~$0.9B, the highest-rated by S&P) and JPMorgan's JLTXX (~$0.8B). Eligibility is mirror-imaged: USYC and USDY are for non-US persons, BUIDL and USTB for US qualified or accredited investors, while BENJI and WTGXX reach US retail.
Which should you use?
you need a permissionless, freely transferable dollar for payments, settlement, or collateral, and do not need it to earn.
you are an eligible investor with idle dollars to park, want the Treasury-bill yield in a regulated wrapper, and can accept whitelisting and redemption windows.
you want permissionless, composable yield and understand you are holding a variable, risk-bearing market position, not a Treasury-safe dollar.
you are a fintech or asset manager offering yield: a compliant yield-bearing dollar wires a tokenized treasury fund in as the yield source, because your payment stablecoin legally cannot pay it.
The fine print and the build
- The wrapper is the fine print: the products above are a private fund, a registered money-market fund, or a note, and each carries different investor eligibility, disclosure, and redemption rules. WTGXX received SEC clearance for round-the-clock dealer trading at a fixed $1 in February 2026. Pick the wrapper for your investors and jurisdiction, not the highest headline AUM.
- Yield-bearing stablecoin is a marketing label, not a legal category: it can mean a tokenized fund, a DeFi token, or a rewards program, each with a different risk and compliance profile. Always ask which of the three you are actually holding.
- Building a yield product: because a payment stablecoin cannot pay holders yield, a compliant yield-bearing dollar routes the yield through a tokenized fund or a DeFi source, wrapped so it is clear which instrument the holder owns. That routing, the disclosures, and the compliance perimeter are the real build.
- Where this is converging: the two categories are blending. Stablecoins now hold tokenized treasuries on the back end (Ethena's USDtb is backed over 90% by BlackRock's BUIDL, and Usual's USD0 uses USYC), tokenized funds are adding payment features (WTGXX's 24/7 dollar settlement, and USYC and BUIDL used as exchange and derivatives collateral), and the GENIUS Act, which bars payment stablecoins from paying yield, is why these treasury-backed yield wrappers exist.
FAQ
What is the difference between a tokenized money market fund and a stablecoin?
Can I earn yield on a stablecoin?
What is the largest tokenized treasury or money-market fund?
Do tokenized treasuries pay yield as a rising price or as new tokens?
How do you get your money out of a tokenized treasury, and is it instant?
Can you use a tokenized treasury as collateral in DeFi?
Are tokenized treasuries and yield-bearing stablecoins the same thing?
How big is the tokenized treasury market compared to stablecoins?
Reviewed by Luis Medeiros, Field CTO at Protofire. Last updated: July 2026.
We build yield-bearing dollar products: the vault, the tokenized-fund or DeFi yield routing, the redemption flow, and the disclosures that keep it clear which instrument the holder owns.
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