Tether (USDT) is the largest stablecoin in the world, a digital token built to always be worth one US dollar. It is backed by a reserve of cash, US Treasury Bills, gold, and Bitcoin held by Tether Limited, and it functions as the connective tissue of the entire crypto trading economy. Here is what matters most for 2026.
USDT’s circulating supply sits at roughly $185 to $190 billion in 2026, making it the third largest holder of US Treasury exposure outside of nations and major money market funds.
Tether reported more than $10 billion in net profit for 2025, generated mostly from interest income on its Treasury holdings, and posted over $1 billion in net profit in the first quarter of 2026 alone.
In March 2026, Tether hired KPMG to conduct its first ever full independent financial audit, a major shift away from the limited quarterly attestations it has relied on for over a decade.
Tether launched USAT in January 2026, a separate, fully US-regulated stablecoin built to comply with the new federal GENIUS Act, since USDT itself remains ineligible due to Tether’s non-US domicile.
More than 60 percent of all USDT now circulates on the Tron network, which has become the dominant settlement rail for global USDT transfers, particularly in emerging markets.
A stablecoin is a type of cryptocurrency designed to hold a steady value instead of fluctuating wildly the way Bitcoin or Ethereum do. Most stablecoins, including USDT, are pegged to the US dollar at a 1 to 1 ratio, meaning one token is always meant to be worth one dollar. This stability is what makes stablecoins useful as a medium of exchange, a unit of account, and a safe place to park value between trades, without needing to convert back to traditional banking rails every time.
Stablecoins solve a real problem in crypto markets. Without them, traders moving out of a volatile asset like Bitcoin would have to cash out to a bank account, which is slow and often expensive, especially across borders. A stablecoin lets that same trader sit in a dollar equivalent instantly, on-chain, ready to re-enter the market at any moment.
Fiat-backed
90%+
Share of stablecoin market, includes USDT and USDC
Crypto-backed
Small
Collateralized by other crypto assets, like DAI
Algorithmic
Niche
Stabilized by code and incentives, historically risky
Tether, traded under the ticker USDT, is a fiat-backed stablecoin issued by Tether Limited, a company originally incorporated in the British Virgin Islands and now headquartered in El Salvador. USDT was first launched in 2014 on Bitcoin’s Omni Layer under the name Realcoin before rebranding to Tether. It claims full 1 to 1 backing by reserves, primarily US Treasury Bills and cash equivalents, with smaller allocations to gold, Bitcoin, secured loans, and corporate instruments.
USDT is the largest stablecoin by market capitalization and the most heavily traded cryptocurrency by volume on most days, frequently exceeding Bitcoin’s own daily trading volume. It is natively issued on more than 10 blockchain networks, including Ethereum, Tron, Solana, and others, with bridged or wrapped versions available on dozens more.
Quick facts about Tether in 2026
Founded: 2014, originally as Realcoin
Ticker: USDT
Peg: 1 USDT to 1 US Dollar
Circulating supply: Approximately $185 to $190 billion
Primary networks: Tron (over 60 percent of supply), Ethereum, Solana, and others
CEO: Paolo Ardoino
Headquarters: El Salvador (relocated from British Virgin Islands in January 2025)
USDT stays close to one dollar through a straightforward issuance and redemption mechanism. When an institutional client sends Tether one US dollar, the company mints one new USDT token and adds the equivalent value to its reserves. When that client redeems USDT for fiat, the corresponding tokens are destroyed and removed from circulation, while reserves are reduced by the same amount.
This mechanism only works smoothly for large institutional players, since direct redemption with Tether requires identity verification and a minimum threshold around $100,000. Most everyday users buy and sell USDT through centralized exchanges instead, where market makers and arbitrage traders keep the price near one dollar by buying USDT when it trades slightly below peg and selling when it trades slightly above, profiting from the tiny spread until balance is restored.
This issuance and redemption loop is the core mechanism that ties USDT’s circulating supply directly to the dollar value of Tether’s reserves.
Tether publishes quarterly attestation reports prepared by BDO Italia detailing what backs USDT. The composition has shifted dramatically over the years, moving away from riskier commercial paper toward a heavy concentration in short-dated US Treasury Bills, while adding diversification into gold and Bitcoin.
Approximate Tether reserve composition, Q1 2026
Asset category
Approximate value
Share of reserves
US Treasury Bills and related instruments
$135 to $141 billion
Roughly 75 to 80 percent
Gold
$17.4 billion
Roughly 9 percent
Bitcoin
$7.1 billion (about 97,141 BTC)
Roughly 4 percent
Secured loans and other investments
Several billion
Small remainder
Excess reserve buffer above liabilities
$6.3 to $8.2 billion
Buffer, not a liability
Sources: Tether quarterly attestation reports prepared by BDO Italia, and Q1 2026 financial disclosures reported by CoinDesk and DL News. Figures are approximate and change with each quarterly report.
US Treasury Bills dominate Tether’s reserve mix, which is also why the company’s profits move closely with short-term interest rates.
Why Tether is so profitable
Tether earns money primarily by collecting interest on the Treasury Bills and other yield-bearing assets backing USDT, while paying zero interest to USDT holders themselves. With reserves now well above $190 billion, even modest short-term interest rates translate into billions of dollars in annual profit, which is how the company reported more than $10 billion in net profit for 2025 alone.
Tether’s transparency record has long been a point of criticism, and understanding that history helps explain why 2026’s audit news is such a significant development. In February 2021, Tether and its sister exchange Bitfinex settled with the New York Attorney General over allegations that Tether made misleading statements about the extent of its dollar backing, and disclosed it had engaged in undisclosed intercompany borrowing.
Later that same year, the Commodity Futures Trading Commission fined Tether $41 million over claims that it made untrue or misleading statements regarding the degree to which USDT was backed by sufficient fiat reserves. Following these settlements, Tether shifted its reserve composition substantially, eliminating tens of billions of dollars in commercial paper holdings, much of it tied to Chinese state-owned bank securities, and replacing that exposure almost entirely with US Treasury Bills by late 2022.
Attestations are not the same as audits
For most of its history, Tether has relied on quarterly attestation reports rather than a full financial audit. An attestation generally confirms that reported reserve assets meet or exceed liabilities at a specific point in time, without the deeper verification of asset quality, ownership, and internal controls that a full audit provides. This distinction is exactly what Tether’s 2026 audit announcement is meant to address.
6. 2026 News: The GENIUS Act, USAT, and the KPMG Audit
2026 has been the most consequential year in Tether’s history on the regulatory front. The Guiding and Establishing National Innovation for US Stablecoins Act, signed into law in July 2025, created the first comprehensive federal framework for stablecoin issuers in the United States. Under the GENIUS Act, qualifying issuers must maintain 1 to 1 reserves in cash and short-term Treasuries, publish monthly reserve reports reviewed by an independent accounting firm, and for issuers above $50 billion in outstanding stablecoins, submit to annual audited financial statements under US GAAP with personal certification from the CEO and CFO.
Why USDT itself cannot qualify under the GENIUS Act
Because Tether Holdings is not domiciled in the United States, and because USDT’s reserves include assets like gold and Bitcoin that the GENIUS Act does not permit for qualifying stablecoins, USDT cannot become a GENIUS-eligible token as currently structured. This is the core reason Tether built an entirely separate product for the US market rather than trying to convert USDT itself.
That separate product is USAT, which Tether launched on January 27, 2026. USAT is issued through Anchorage Digital Bank under Office of the Comptroller of the Currency supervision, and is run by CEO Bo Hines, a former White House crypto advisor. As of its early months, USAT’s circulating supply remained small, in the tens of millions of dollars, a tiny fraction of USDT’s roughly $185 billion, reflecting its status as a fresh launch rather than an established product.
The second major 2026 development is Tether’s decision to commission a full financial statement audit from KPMG, announced in March 2026, with PwC separately engaged to help prepare Tether’s internal systems ahead of the review. This marks the company’s first ever Big Four audit engagement, a striking reversal from past years when Tether’s own CEO Paolo Ardoino has said major accounting firms were reluctant to take on the reputational risk of working with the company. The audit comes as Tether pursues a US expansion and reportedly seeks to raise between 15 and 20 billion dollars in new funding at a valuation that could reach 500 billion dollars.
Why the audit matters more than the profit headlines
Tether’s quarterly profit figures have been impressive for years, but profitability was never really the question hanging over the company. The real question has always been whether the reserves backing nearly $190 billion in circulating tokens are exactly what Tether says they are. A clean audit opinion from KPMG would be the strongest evidence yet that they are, potentially opening the door for US banks and institutional asset managers that have so far kept USDT at arm’s length due to audit risk.
Separately, USDT’s relationship with European regulators has moved in the opposite direction. Under the EU’s Markets in Crypto-Assets regulation, Tether declined to apply for Electronic Money Token authorization, objecting to mandated bank deposit holding rules. The result was a wave of delistings through 2024 and 2025, as major exchanges including Binance, Kraken, Coinbase, OKX, and Bitstamp removed or restricted USDT trading for users inside the European Economic Area, while euro-denominated stablecoins from issuers like Circle and Société Générale filled the resulting gap.
USDT and USDC, issued by Circle, together account for roughly 93 percent of the entire stablecoin market, but the two tokens occupy noticeably different niches.
USDT vs USDC, key differences in 2026
Feature
USDT (Tether)
USDC (Circle)
Issuer domicile
El Salvador (formerly British Virgin Islands)
United States
GENIUS Act eligible
No, not as currently structured
Yes
Full financial audit
First audit underway in 2026 (KPMG)
Regular attestations, more established compliance record
Primary use case
Global trading, emerging market remittances, exchange liquidity
US institutional finance, DeFi, regulated payment rails
Reserve composition
Treasuries plus gold and Bitcoin
Cash and short-term Treasuries only
Dominant network
Tron (over 60 percent of supply)
Ethereum and Solana
USDT alone accounts for close to 60 percent of the entire global stablecoin market, with USDC a distant but significant second.
Stablecoins function as the working capital of the crypto markets. Nearly every major exchange uses USDT as a base trading pair, meaning traders moving between Bitcoin, Ethereum, and thousands of other tokens are constantly passing through USDT along the way. This gives USDT outsized importance in determining overall market liquidity, since a disruption to USDT would ripple through nearly every corner of the crypto trading ecosystem simultaneously.
Beyond trading, stablecoins increasingly serve as practical financial infrastructure. In countries with unstable local currencies or limited banking access, USDT offers a way to hold and transfer dollar-equivalent value without needing a traditional bank account. Tether’s reported $13.3 trillion in USDT transfer volume during 2025 reflects just how large this real-world usage has become, spanning both speculative trading and genuine payments activity.
Trading and arbitrage. Traders park profits in USDT between trades to avoid volatility exposure without fully cashing out to a bank account.
Cross-border remittances. Workers and families in regions with costly or slow traditional remittance corridors increasingly use USDT to move dollar-equivalent value quickly and cheaply.
Inflation and currency hedging. In countries experiencing high inflation or currency controls, individuals use USDT as an accessible substitute for holding US dollars directly.
DeFi collateral and lending. USDT is widely used as collateral or as a borrowable asset across decentralized finance lending protocols.
Everyday payments. Integrations like the Tether-backed Oobit app connecting USDT to Brazil’s Pix payment network show stablecoins moving toward genuine retail spending, not just trading.
Until the KPMG audit is complete and published, USDT holders are relying on quarterly attestations and Tether’s own disclosures rather than a fully independent audit opinion. A discrepancy uncovered during the audit could trigger a sharp loss of confidence.
Regulatory fragmentation risk
USDT already faces restrictions in the European Union and cannot qualify under the US GENIUS Act in its current form, which means its regulatory footprint could keep narrowing in major developed markets even as usage grows elsewhere.
No yield for holders
USDT pays no interest to holders, even though Tether itself earns substantial yield on the Treasury Bills backing those tokens. Holding large amounts of USDT for long periods means forgoing interest you could otherwise earn elsewhere.
Brief de-peg events
USDT has experienced small, temporary deviations from its $1 peg during periods of market stress. These have historically been brief, but they highlight that the peg is maintained by market mechanisms and trust rather than a government guarantee.
Stablecoins are not government insured
USDT and other stablecoins are not deposits and are not insured by the FDIC or any government agency. If you hold significant value in any stablecoin, understand that your protection depends entirely on the issuer’s reserve quality, solvency, and redemption mechanics, not on a federal safety net the way a bank deposit would be.
They are separate but closely related companies that historically operated under the same parent company, iFinex, and share significant executive overlap. This relationship was central to the 2021 New York Attorney General settlement, which addressed undisclosed lending between the two entities.
Can USDT lose its dollar peg permanently?
In theory, yes, if reserves were ever proven insufficient to cover redemptions at scale, similar to a bank run. In practice, USDT has maintained its peg through years of market volatility, multiple regulatory settlements, and competitor launches, with only brief, minor deviations during periods of acute stress.
Why does Tether hold Bitcoin and gold instead of only cash?
Tether has pursued a diversification strategy since 2023, committing up to 15 percent of quarterly profits toward Bitcoin purchases, alongside building a meaningful gold position. The company frames this as building a stronger excess reserve buffer, though critics note that Bitcoin and gold are more volatile than cash and Treasuries, which is also why the GENIUS Act excludes such assets from GENIUS-qualifying reserves.
Is USDT legal to use in the United States?
Yes, USDT remains legal to hold and trade for most US users in 2026. However, because it cannot qualify as a GENIUS Act compliant stablecoin, banking and payment processor friction around USDT has grown, with regulated institutions increasingly favoring GENIUS-eligible tokens like USDC, PYUSD, and Tether’s own USAT for US-facing activity.
What is the difference between USDT and USAT?
USDT is Tether’s original, globally dominant stablecoin, issued by a non-US entity and not compliant with the GENIUS Act. USAT is a newer, separate token launched in January 2026 specifically to meet GENIUS Act requirements for the US market, issued through Anchorage Digital Bank under federal banking supervision. As of mid 2026, USAT’s circulating supply remains a small fraction of USDT’s.
Why is Tether’s audit such a big deal if it has published attestations for years?
An attestation is a narrower, point-in-time check confirming that reported assets meet or exceed reported liabilities, without deeply verifying asset ownership, quality, or the company’s internal financial controls. A full audit from a Big Four firm like KPMG goes much further, examining the complete financial reporting system, which is why Tether itself has described the engagement as a landmark step toward institutional trust.
This article is for general educational purposes and reflects publicly available information on Tether, USDT, and stablecoin regulation current as of mid 2026. It is not financial or investment advice. Cryptocurrency markets, including stablecoins, carry risk, and circulating supply, reserve composition, and regulatory status can change quickly. Always verify current figures directly with Tether’s transparency page and consult a licensed financial professional before making investment decisions.
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