USDT dominates payments, USDC dominates DeFi: How stablecoins can divide the market

Stability coin market differentiation: USDT dominates payments, USDC deeply cultivates DeFi

Although the outside world often regards stablecoins as fungible commodities, data for the first half of 2026 presents a completely different picture. The two giants, USDT and USDC, together account for 83% of the US$315 billion stablecoin market. Now they no longer compete for the same territory, but each opens up completely different territories.

Data shows that the USDT processed approximately US$95 billion in commercial payment settlements in the first half of the year, while the USDC completed only US$14 billion. In business-to-business transactions, the gap is even wider: USDT accounts for 92% of the market.

USDT firmly controls commercial payments

The wavefield network remains the pillar of USDT\'s dominant position in payments. As USDT\'s largest custody chain, approximately 93% of the token supply on the chain is stored in regular wallets rather than smart contracts. This data shows that users are more inclined to transfer funds than pursue revenue. Low handling fees and high throughput make Bochang an actual remittance channel in markets with limited access to U.S. dollars.

USDT\'s US$95 billion settlement volume is not false. It points to a scenario that goes far beyond the native activity of cryptocurrencies: Merchants, logistics companies, and import and export companies in emerging economies are increasingly using Tether as working capital. The 92% B2B share further confirms that companies prefer USDT when settling invoices.

USDC is deeply embedded in DeFi ecosystem

Circle\'s stablecoins tell a completely different story. In June alone, USDC processed approximately $2.6 trillion in transfers on the Base network and another $1.6 trillion on Ethereum. These figures far exceed USDT\'s total payments in the first half of the year, but activity is concentrated within decentralized financial agreements. Liquidity pools, lending markets and automated strategies on Base and Ethereum drive the vast majority of transaction volume.

Base-the Layer 2 network incubated by Coinbase-quickly became the preferred settlement layer for USDC, reflecting how exchange-associated infrastructure affects the direction of stablecoins use. Ethereum retains its status as an institutional-level DeFi venue, hosting high-value transactions that require tested security. These networks consistently rank among the top in developer activity rankings, further strengthening the USDC\'s binding to innovation rather than simple dollar transfers.

Network effects intensify differentiation

This differentiation is no accident. The adoption of stablecoins is sticky. Once a network becomes the default channel for a specific use case, liquidity will be concentrated there. On the wavefield, USDT benefits from the deep integration of wallets and exchanges related to payment traffic. On Base and Ethereum, USDC has woven DeFi\'s composability layers, and each new protocol is deepening its moat. The wave of real-world asset tokenization has further consolidated this position, as institutional participants generally tend to choose regulated and transparent stablecoins for on-chain settlement.

It is unclear which side can invade the other\'s territory. The USDT has previously attempted DeFi integration, but its low regulatory transparency limits serious institutional participation. Although USDC is compliant, it has not yet shown interest in the high-volume and low-margin payment business led by Tether-. At least for now, the market seems content with this dual-track structure.

Implications for the $315 billion market

Investors and regulators are watching this divergence closely. A stablecoin market clearly divided into two lines, payments and DeFi, raises different regulatory issues for each vertical. Payments require anti-money laundering controls and sanctions compliance;DeFi raises concerns about systemic risks, oracle manipulation and the safety of income-based products. The increasingly heated debate on stablecoin regulation in Washington may force people to treat these use cases differently.

This divergence provides clear guidance for traders: USDT remains the preferred quoted asset on offshore exchanges and peer-to-peer markets, while USDC is the main unit of account in DeFi. The total market value of $315 billion is no longer a simple number today. It reflects two parallel financial systems-each with unique geographical distribution, user groups and risk characteristics. Whether this structure can be maintained or will collapse under the pressure of new regulations will become a key issue in the stabilization of the currency pattern in the second half of 2026.