USDT vs USDTB
Tether and Ethena USDtb, compared on the things that decide whether you get your dollar back. Live data, updated continuously.
30-day peg gap and USDT/USDTB spread
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The largest dollar token on-chain, backed mainly by US Treasury bills and cash equivalents. Direct redemption is available to verified institutional customers above a minimum size; everyone else exits via secondary markets.
Verdict band: Adequate
Ethena USDtb is a dollar-denominated token tracked across 2 chains. No verified issuer disclosure is on file, so its collateral and legal structure score conservatively.
Verdict band: Adequate
| Safety scoreComposite of collateral, peg, liquidity, issuer and track record. | ●●●●●5 of 5 | 76 | 68 | USDT |
|---|---|---|---|---|
| Collateral qualityWhat actually backs the token, and how liquid that backing is. | ●●●●●5 of 5 | 78 | 55 | USDT |
| Exit liquidityWhether you can leave at size without moving the price. | ●●●●●5 of 5 | $3.56B | $100.04M | USDT |
| Issuer & legal standingRegulatory perimeter, disclosure quality and redemption rights. | ●●●●4 of 5 | 54 | 48 | USDT |
| Peg tightness (live)Absolute distance from $1.00 right now — smaller is better. | ●●●●4 of 5 | −0.059% | −0.069% | USDT |
| Worst recorded depegHow badly the token has broken before, as a stress precedent. | ●●●●4 of 5 | -4.8% | None recorded | USDTB |
| Track recordYears live and behaviour through past stress events. | ●●●●4 of 5 | 100 | 53 | USDT |
| Scale / market capBigger float usually means broader venue support and tighter spreads. | ●●●3 of 5 | $182.95B | $403.58M | USDT |
| Chain reachNumber of networks where the token is natively deployed. | ●●●3 of 5 | 104 chains | 2 chains | USDT |
| Best available yieldUpside — but every extra point above T-bills is paid for with risk. | ●●2 of 5 | 17.67% | 5.64% | USDT |
"Matters" is our weighting of how much each dimension typically drives a real allocation decision. Sort any column to re-rank the tradeoffs by what matters to you.
The short answer
USDT scores higher on safety (76 vs 68), driven mainly by collateral quality and disclosure. USDT has deeper tracked liquidity ($3.56B), which is what determines whether you can exit at size. USDT currently earns up to 17.67% — remember that any rate above the T-bill yield is payment for a risk.
If both are fiat-reserve tokens, note that holding both is not diversification: they share the same short-dated Treasury and banking exposure. Genuine diversification means mixing collateral structures.
Which one fits your goal: USDT or USDTB?
Capital preservation over everything else.
For park cash safely, USDT is the better fit over USDTB.
- Safety score 76 vs 68, with collateral rated 78/100.
- Current peg deviation -0.059% against -0.069% for USDTB.
- USDT has 2 recorded depeg event(s) — read them before sizing up.
Concentrating in one issuer is a single point of failure regardless of score. Split across collateral structures.
Key risks, side by side
USDT
- Issuer and banking risk: reserves sit with Tether under El Salvador / BVI rules.
- Depeg history: 2 recorded event(s), worst deviation -4.80%.
- Attestation cadence: quarterly.
- Yield venue risk: 17.67% is earned outside the token itself.
USDTB
- Issuer and banking risk: reserves sit with Undisclosed under Not documented rules.
- No depeg recorded in our incident log — absence of history is not a guarantee.
- Limited public attestation of reserves.
- Yield venue risk: 5.64% is earned outside the token itself.
- Chain concentration: 89% of supply sits on Ethereum.
| Metric | USDT | USDTB |
|---|---|---|
| Category | Stablecoin | Stablecoin |
| Issuer | Tether | Undisclosed |
| Jurisdiction | El Salvador / BVI | Not documented |
| Collateral | fiat-reserves | fiat-backed |
| Peg mechanism | fiat-backed | fiat-backed |
| Attestation | quarterly | none |
| Redemption | gated | market-only |
| Price | $0.9994 | $0.9993 |
| Peg deviation | −0.059% | −0.069% |
| Market cap | $182.95B | $403.58M |
| 7d supply change | +0.51% | +0.76% |
| Liquidity | $3.56B | $100.04M |
| Best yield | 17.67% (azuro · Polygon) | 5.64% (fluid-lending · Ethereum) |
| Chains | 104 | 2 |
| Launched | 2014 | — |
| Worst recorded depeg | −4.8% | None recorded |
Spread, peg gap and switching cost
- Price spread (USDT vs USDTB)
- +0.9 bps
- $0.9994 vs $0.9993
- Peg deviation gap
- -0.009 pp
- USDT −0.059% · USDTB −0.069%
- Yield spread
- +12.03%
- USDT 17.67% · USDTB 5.64%
- Liquidity ratio
- 35.61×
- $3.56B vs $100.04M
A round trip between USDT and USDTB costs roughly the market spread plus venue fees. At 0.9 bps of price gap, swapping $1M implies about $91.98 of price impact before fees — usually only worth it if the peg gap or yield spread is durable, not intraday noise.
Historical context
Track record is the part of a stablecoin you cannot model — it has to be observed. Here is how USDT and USDTB have actually behaved since launch, including every stress event we have on record.
- USDT
Tether goes live.
- USDT
Launched as Realcoin on Bitcoin's Omni layer, later renamed Tether.
- USDT
NYAG filings reveal reserves were not fully cash-backed at the time.
- USDT
Settles with the NY Attorney General; agrees to quarterly reserve reporting.
- USDT
Terra contagion run (worst deviation -4.8%).
- USDT
Shifts reserves decisively toward short-dated US Treasury bills.
- USDT
Banking stress (worst deviation 0.5%).
Chain coverage
USDT is live on 104 chains, USDTB on 2. 2 chains carry both, so bridging is only unavoidable for the 102 networks where just one of them is deployed.
| Chain | USDT | USDTB | Both available |
|---|---|---|---|
| $90.48B | — | USDT only | |
| $74.12B | $357.68M | Yes | |
| $9.18B | — | USDT only | |
| $2.86B | $45.90M | Yes | |
| $976.42M | — | USDT only | |
| $852.81M | — | USDT only | |
| $832.58M | — | USDT only | |
| $680.38M | — | USDT only | |
| $680.38M | — | USDT only | |
| $437.42M | — | USDT only | |
| $382.36M | — | USDT only | |
| $228.35M | — | USDT only | |
| $193.09M | — | USDT only | |
| $113.11M | — | USDT only | |
| $100.26M | — | USDT only | |
| $82.91M | — | USDT only | |
| $79.99M | — | USDT only | |
| $78.88M | — | USDT only | |
| $77.45M | — | USDT only | |
| $64.33M | — | USDT only |
USDT vs USDTB: frequently asked questions
Is USDT or USDTB safer?
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On our composite safety score USDT rates 76/100 versus 68/100 for USDTB. The score weighs collateral quality (fiat-reserves vs fiat-backed), redemption rights, attestation quality, peg history and liquidity depth. A higher score is not a guarantee: both remain issuer-credit and smart-contract exposures, not insured bank deposits.
What is the difference between USDT and USDTB?
+
Tether is issued by Tether (El Salvador / BVI), backed by fiat-reserves, with redemption terms: gated. Ethena USDtb is issued by Undisclosed (Not documented), backed by fiat-backed, with redemption terms: market-only. Attestation coverage is "quarterly" for USDT and "none" for USDTB.
Which has the bigger market cap, USDT or USDTB?
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USDT is larger at $182.95B in circulating supply, against $403.58M for the other. Over the last 7 days supply moved +0.51% for USDT and +0.76% for USDTB.
Are USDT and USDTB trading at $1.00 right now?
+
USDT trades at $0.9994 (−0.059% off peg) and USDTB at $0.9993 (−0.069% off peg). The gap between the two is about 0.9 basis points, which is the cost you pay when rotating size between them before fees.
Has USDT or USDTB ever depegged?
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USDT: worst recorded deviation −4.8%. USDTB: no material depeg recorded in our incident set. Past peg behaviour under stress is the single best available proxy for how a token trades in the next crisis.
Which is better for large institutional size, USDT or USDTB?
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For block size the constraint is exit liquidity and primary redemption, not headline supply. USDT shows deeper on-chain liquidity at $3.56B versus $100.04M. Combine that with the redemption channel — USDT: gated; USDTB: market-only — and size trades against the primary window rather than the order book where possible.
Can I earn yield on USDT or USDTB?
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USDT currently shows the higher rate at 17.67% via azuro · Polygon, against 5.64% via fluid-lending · Ethereum for USDTB. Neither token pays interest by holding it in a wallet: the yield comes from lending, liquidity provision or a wrapped yield-bearing version, each with its own counterparty and contract risk.
Which chains support both USDT and USDTB?
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Both are deployed on 2 shared networks, including Ethereum, Solana. USDT spans 104 chains in total and USDTB spans 2. Bridged supply on a chain is not the same as natively issued supply, and it usually carries the bridge's risk rather than the issuer's.
What does it cost to switch from USDT to USDTB?
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Budget three components: the current price spread of roughly 0.9 bps, swap or venue fees, and slippage against available depth ($3.56B for USDT, $100.04M for USDTB). For meaningful size, redeeming with the issuer and minting the other side is often cheaper than a secondary-market swap.
Is USDT or USDTB regulated?
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USDT is issued from El Salvador / BVI with quarterly; USDTB is issued from Not documented with none. Regulatory status varies by your own jurisdiction and by whether the token is offered under a specific stablecoin regime, so treat this as a starting point for diligence, not legal advice.