Interactive Brokers quietly links stablecoins wallets with traditional trading accounts

In a move that tightens links between digital assets and Wall Street, Interactive Brokers is linking stablecoins and traditional trading accounts.

Interactive Brokers rolls out stablecoin deposits

Interactive Brokers, the global brokerage giant, has introduced a feature that lets selected clients fund their trading accounts with USDC and USDT held in personal crypto wallets.

Previously, users typically relied on bank wires or ACH transfers to move money into their brokerage balances.

According to Bloomberg, the company is rolling out this new stablecoin account funding option gradually. Instead of sending dollars through the banking system, eligible clients can now transfer tokenized dollars from a wallet, which the broker then converts into regular fiat buying power.

In practice, a client sends USDC or USDT from a self-custodied wallet. However, once those tokens reach the broker, they are converted, and the client sees a standard cash balance ready for trading stocks, options, or futures.

How the new stablecoin flow works

A stablecoin is a digital token designed to track the value of one U.S. dollar, typically supported by reserves such as cash or short-term Treasuries. Moreover, its price usually stays close to 1:1 with the dollar, making it a convenient bridge asset between crypto and traditional markets.

With this new feature, Interactive Brokers clients can effectively convert stablecoins to fiat inside their brokerage workflow. Instead of initiating a wire transfer, they simply move on-chain tokens from a private wallet to the brokerage-designated address, where the funds are processed into fiat-equivalent balance.

This design lowers friction for investors who already hold part of their portfolio in stablecoins. That said, it also offers a new route for traders who want faster access to equity markets without waiting on bank processing times or international transfer delays.

Zero Hash powers around-the-clock deposits

The new capability relies on Zero Hash, a crypto infrastructure provider that handles the stablecoin leg of the transaction. Zero Hash manages the on-chain transfers and settlement process, allowing deposits to be processed outside traditional banking hours.

Because Zero Hash operates 24/7, deposits are not constrained by bank cut-off times or weekend closures. Moreover, an active trader can top up a balance on Sunday night to chase a Monday opening move, rather than waiting for a wire to clear through the legacy system.

This arrangement enables stablecoin trading account deposits that behave more like instant crypto account top-ups than conventional bank transfers. However, once the transfer completes, the end result for the customer is a standard cash balance ready for use in regular markets.

The integration ultimately offers a new way to fund accounts with stablecoins while still keeping the traditional brokerage experience intact. It may also appeal to traders who regularly move between crypto exchanges and equity or derivatives markets.

Strategic implications for crypto and brokerage markets

By allowing USDC and USDT to flow directly into trading accounts, Interactive Brokers is quietly reducing the gap between on-chain liquidity and listed securities. Moreover, this step could signal a broader industry trend as brokers explore digital rails while retaining regulatory oversight and fiat settlement.

The move also matters for stablecoin issuers themselves. Increased brokerage usage can strengthen their role as transactional money in capital markets, beyond just crypto exchanges. That said, it also invites more scrutiny around reserves, transparency, and operational resilience.

For everyday users, the benefit is practical: faster access to trading capital and potentially lower friction when rotating between digital assets and traditional instruments. Importantly, this is framed as infrastructure, not speculation, which may encourage broader institutional adoption.

Cardano eyes deeper stablecoin connectivity

Beyond Interactive Brokers, other ecosystems are also pushing deeper into stablecoin infrastructure. Cardano founder Charles Hoskinson recently hinted that major dollar-pegged tokens, including USDC and USDT, could be on the way to the Cardano network.

Hoskinson described a roadmap that includes potential cardano stablecoin integrations alongside bridges, oracles, analytics tools, and custodial services. Moreover, he framed this as “the first menu of the 12 days of Christmas,” suggesting that more integrations and services are expected over time.

In a statement shared with the community, he said “the menu is quite vast. Bridges, stablecoins—the good ones—the really good ones. Oracles, analytics, and custodial providers—this is the 1st menu of the 12 days of Christmas.” That said, no specific launch dates or partners have yet been confirmed.

For Cardano users and investors, these hints signal an ecosystem that is actively seeking closer ties with leading stablecoins and critical infrastructure providers. Furthermore, such additions could bolster liquidity, attract new developers, and make it easier for institutions to launch products on the chain.

Taken together, Interactive Brokers stablecoin funding and Cardano’s infrastructure push underline how stablecoins are evolving from a niche crypto instrument into a key connective layer for global markets.