Toss Bank and the Solana Foundation signed a memorandum of understanding on June 19 at Toss's Sinnonhyeon office in Seoul's Seocho-gu district, agreeing to build and test a blockchain-based cross-border payment system. The deal is the first formal collaboration between a South Korean internet-only bank and the Solana Foundation. It covers stablecoin-denominated overseas remittances as an initial focus, with digital asset services and real-world asset tokenization listed as longer-term areas of cooperation.

The proof-of-concept will run in two phases. The first phase tests the technical viability of moving stablecoins across borders on Solana. The second brings in overseas partners and addresses anti-money laundering and know-your-customer compliance requirements. No live product, target corridors, or specific stablecoin has been confirmed. Industry timelines suggest the path from a signed MOU to a commercial product in a regulated banking environment typically takes 12 to 24 months.

Toss Bank serves roughly 15 million customers. Its parent app, operated by Viva Republica, counts more than 24 million monthly active users, representing nearly half of South Korea's population.

The bank launched international remittance services in January 2026 and now covers 7 currencies across 30 countries, including near real-time transfers in euros, Singapore dollars, and British pounds. The company posted its first-ever operating profit in FY2025, recording 90.7 billion won (approximately $66 million) on revenues of 1.96 trillion won. Viva Republica is also targeting a U.S. IPO in 2026 at a valuation in the range of $10 billion to $15 billion.

"Together with Solana, we will verify the potential for Toss Bank's 15 million customers to experience global digital finance faster and at lower cost," said Park Jin-hyun, Head of the Strategy Division at Toss Bank.

Solana Foundation Chair Lily Liu said: "By combining the trust of traditional finance with the efficiency of blockchain, we expect this to become an opportunity to create a new standard for international remittances."

The partnership was explicitly framed as a pre-emptive move ahead of South Korea's Digital Asset Basic Act, a comprehensive regulatory framework proposed by the ruling Democratic Party in April 2026. The Act would impose bank-style licensing, reserve requirements, and redemption obligations on stablecoin issuers. A prolonged dispute between the Bank of Korea and the Financial Services Commission over who should control won-pegged stablecoin issuance delayed the legislation through most of 2025. At the center of that dispute was the Bank of Korea's proposal that won-pegged stablecoin issuance be conducted through 51% bank-led consortiums, a condition the FSC opposed as anti-competitive. A resolution is now in progress. The commercial urgency for Korean financial institutions has also been sharpened by a separate regulatory shift: a corporate crypto investment ban was lifted in January 2026, allowing companies to allocate up to 5% of shareholder equity into digital assets annually.

Toss Bank is not alone in moving early. Rival internet-only bank KBank, the exclusive banking partner of crypto exchange Upbit, began testing cross-border blockchain transfers using Ripple's Palisade infrastructure in April 2026, targeting corridors to the UAE and Thailand.

Solana's speed and fee structure were cited as key factors in its selection for the pilot. The network currently processes around 5,500 transactions per second in production conditions, with average fees between $0.0005 and $0.003 per transaction and sub-second finality. The December 2025 launch of Firedancer, an independent validator client developed by Jump Crypto that now carries roughly 14% of mainnet stake, has added resilience to the network. At the time of the announcement, SOL moved up approximately 2%, trading around $74 with 24-hour volume rising about 15%.

Why This Matters Beyond Korea

South Korea hosts a substantial migrant worker population from Bangladesh, Nepal, Vietnam, the Philippines, and Sri Lanka. Remittance fees on a $200 transfer through traditional banks and money transfer operators on the South Korea-to-Vietnam corridor run at roughly 6.33%, based on ILO and World Bank data.

The Philippines alone receives between $40 billion and $43.7 billion in annual inbound remittances, with a meaningful share originating in East Asia.

Stablecoin rails on a high-throughput network can significantly compress settlement from days to seconds and reduce or eliminate most intermediary fees that inflate those costs.

If the Toss Bank proof-of-concept progresses to a commercial product, the compliance architecture built during Phase 2 could also serve as a reference model for fintech developers in South Asia and Africa navigating similar regulatory hurdles. Solana's growing enterprise stack, which now includes Visa's USDC settlement for U.S. banks, Western Union's USDPT stablecoin (live in Bolivia and the Philippines and targeting 40-plus countries), and the adoption of Solana's developer platform by both Mastercard and Worldpay, means the infrastructure Toss Bank is testing already carries institutional backing from multiple directions.

The immediate next step is technical validation. Whether the proof-of-concept produces a product that Toss Bank's 15 million customers actually use will depend on the final shape of the Digital Asset Basic Act and how quickly Phase 2 compliance work can be completed. That regulatory outcome, expected to be resolved in the coming months, will define the conditions for every Korean fintech and internet-only bank considering stablecoin-based services.