According to a Protos report, USDT issuer Tether and USDC issuer Circle are still competing for dominance in the dollar stablecoin market, with both companies signaling a willingness to align with the Trump administration. The core of this competition is no longer just about issuance volume — it’s about who can secure a more favorable regulatory position when US stablecoin legislation takes effect. For users holding USDT virtual cards, this isn’t mere industry gossip. The settlement currency on your card, the exchange rate costs on cross-border spending, and which stablecoins your card issuer supports for top-ups are all directly tied to the outcome of this rivalry.
Editorial Analysis: How This Competition Affects Your Card
The vast majority of mainstream USDT virtual cards — including our editor’s pick MPCard, as well as Bybit Card and RedotPay — default to USDT as the base currency for top-ups and settlement. Tether’s lead in on-chain liquidity and exchange depth is precisely what underpins the stable top-up rates these cards can maintain.
In terms of a practical timeline, here is what users should expect:
- Within 7 days: No perceptible changes. USDT remains the default top-up currency; on-chain transfers and in-card settlement continue as normal.
- Within 30 days: If clear signals emerge that US stablecoin legislation is advancing, some issuers focused on the US market may announce the addition of USDC top-up channels — but this means “one more option,” not “replacing USDT.”
- Within 90 days: Watch whether issuers adjust top-up fee rates for different stablecoins. If USDC achieves a clearer compliance status, a small number of cards may offer lower fees for USDC top-ups to spread regulatory risk.
In short, this competition is neutral to mildly positive for you in the short term — an additional compliant stablecoin option for card issuers simply means one more funding path for users. The real thing to watch for is if any card suddenly stops USDT top-ups unilaterally, and currently no mainstream card is showing any sign of doing so.
Historical Reference: The 2023 USDC Depeg Lesson
The most instructive reference point for gauging this competition is the USDC depeg event of March 2023. When Silicon Valley Bank collapsed and Circle disclosed that a portion of its reserves were held there, USDC briefly fell below $1 before recovering its peg after the Federal Reserve intervened. That episode made one thing clear: the risk with stablecoins is not “who is bigger,” but “where the reserves are held and whether they can be redeemed.”
What is different this time is that the competitive focus has shifted from “reserve safety” to “regulatory positioning.” The 2023 episode was a reactive response to a banking crisis; the 2026 contest is an active effort to win legislative favor — both companies are moving toward Washington. What remains the same is that, for cardholders, diversification is still the only reliable hedge: do not leave large amounts parked long-term in a single stablecoin or a single issuer’s wallet. This lesson is identical to what 2023 taught us.
Regulatory Impact: The Grey Zone Before Legislation Passes
The legal status of stablecoins in the United States is still in a “framework advancing, details pending” phase. This means:
- Clearly permitted: Holding and using USDT/USDC to top up virtual cards for everyday spending is not prohibited in most jurisdictions.
- Grey zone: The compliance relationship between issuers and US regulators is still taking shape; legislative details could change how card issuers open access to US users.
- Mind local rules: The compliance boundaries for stablecoin cards depend heavily on where you are. US users can refer to the US compliance guide; tax and reporting requirements vary across Asia-Pacific, so check the relevant country page, such as Japan compliance or Hong Kong compliance.
Key reminder: The Tether vs Circle competition changes strategy at the issuer level, not the legality of your personally held card. Do not assume your card will come under regulatory scrutiny just because of a news item about an issuer — these are two separate matters.
Key Milestones Worth Watching
- The next milestone in US stablecoin legislation: Any specific bill vote date will immediately be reflected in shifts in Tether’s and Circle’s market share.
- Tether’s next transparency report: Any changes to its reserve structure are the primary source for assessing USDT’s long-term stability — refer to the Tether official transparency page.
- Top-up currency announcements from major card issuers: Watch whether Bybit Card and others add USDC channels or adjust fee rates.
- Changes in the market cap gap between USDC and USDT: A narrowing gap indicates that Circle’s regulatory strategy is working, which could further influence issuer choices.
Editorial Recommendations
Clear actions for different situations:
Users already holding a USDT card (MPCard / Bybit Card / RedotPay)
- No action needed. USDT top-ups and settlement are unaffected — use your card as normal.
- There is no rush to convert funds to USDC. Legislation has not passed yet, and converting only adds unnecessary fees.
Users planning to apply for a new card
- Proceed with your application as normal; there is no reason to delay because of this news.
- When choosing a card, prioritize fee rates and local compliance over “which stablecoins are supported” — USDT channels are stable across all mainstream cards. See 2026 Top 5 USDT Cards and Lowest Fee Comparison.
Long-term holders with significant balances
- Apply the 2023 depeg lesson: spread funds across different issuer wallets and avoid leaving large USDT amounts on a single platform for extended periods.
- Track Tether’s transparency reports and US legislative milestones as reference points for timing any adjustments.
One-line summary: This is a market and regulatory contest between issuers. It has no negative impact on your card’s everyday use right now, but it is worth adding “which stablecoins does this issuer support and how does it price them” to your standard checklist when selecting a card.