Toss Declares 'Money 3.0' — A Seismic Shift in Korean Fintech

South Korea's largest fintech company, Toss (operated by Viva Republica), has officially moved to develop its own proprietary blockchain mainnet and issue a Korean won-backed stablecoin. With approximately 30 million registered users — roughly 60% of South Korea's entire population — Toss is not merely experimenting with blockchain technology. It is declaring a structural transformation from electronic money (Money 2.0) to what it calls "Money 3.0": a new era where programmable money and stablecoins become the foundation of financial services. The implications for competitors KakaoPay and NaverPay, and for South Korea's broader digital economy, are profound.

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The Core Strategy: Proprietary Mainnet and TOSSKRW Stablecoin

Building a Blockchain From the Ground Up

Toss is currently evaluating two architectural paths: building a standalone Layer 1 (L1) blockchain with a native cryptocurrency, or deploying a Layer 2 (L2) solution on top of an existing blockchain network. The final decision hinges on how South Korea's pending Digital Asset Basic Act addresses network operations, token models, and stablecoin regulations.

An L1 approach would give Toss complete sovereignty over fee structures, governance, and protocol design — critical advantages for a company seeking to integrate blockchain across its payment, banking, and securities ecosystem. An L2 solution would offer faster time-to-market by leveraging an existing chain's security and network effects. As of April 2026, teams are still deliberating, with blockchain engineers being actively recruited since February 2026 across wallet systems, API processing, node operations, cryptographic signing, and compliance roles.

24 Stablecoin Trademarks: The TOSSKRW Signal

In June 2025, a dedicated Stablecoin Task Force led by Chief Business Officer Kyuha Kim filed 24 Korean won stablecoin trademarks, including "TOSSKRW," "TKRW," "KRWTOSS," and "KRWT." The filings span cryptocurrency financial transactions, electronic transfers, and remittance services — covering the full spectrum of financial and payment operations. Subsidiary Toss Bank had already registered 48 stablecoin-related trademarks, bringing the group's total to over 70 trademark filings.

This trademark blitz is not defensive brand protection. It is an aggressive land-grab for naming rights in what is expected to become one of Asia's most contested stablecoin markets.

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Web3 Wallet Integration: The 30-Million-User Advantage

Perhaps the most strategically significant element of Toss's blockchain plans is its approach to user onboarding. Unlike typical Web3 projects that require users to download separate wallet applications and manage seed phrases, Toss is building its Web3 wallet directly into the existing Toss app. This means all 30 million current users could access blockchain-based financial services from day one — no additional downloads, no wallet creation friction.

The integrated wallet will support virtual asset storage, transfers, payments, and tokenized securities management. At the 2026 Blockchain Meetup Conference in Seoul, Toss's Senior Vice President of New Business, Seo Chang-hoon, articulated the vision: "If Toss in 2015 lowered the barriers to finance by redesigning remittances without digital certificates, Toss in 2026 will complete the 'Borderless Financial Super App' by redesigning money itself — eliminating borders of nations, products, time, and intermediaries."

AI Meets Blockchain: The Financial OS

Toss's model goes beyond simple blockchain payments. The company envisions a "Financial Operating System" where AI agents configure transaction conditions, MyData provides contextual information, and smart contracts execute autonomously. Practical applications include automated buying at target prices, portfolio rebalancing, and loan repayment optimization — all handled by AI operating on blockchain rails.

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Proven Results and Financial Muscle

Toss has already completed a proof-of-concept (PoC) for its Money 3.0 vision. The "Small Business Digital Asset Mutual Lending Project" combined Toss's proprietary SOHO Score credit assessment with blockchain smart contracts to create a system where loan interest rates automatically decrease as a borrower's credit score improves — without any manual application required.

The financial impact projections are striking. Merchant fees under the blockchain-based payment network would drop from the current 2-3% to approximately 0.1%, while settlement times would compress from up to 7 days to real-time processing.

Toss's financial foundation supports these ambitions. In fiscal year 2025, consolidated net income reached 201.7 billion KRW (~$145 million), a nearly tenfold increase from the prior year's 21.3 billion KRW. R&D spending hit 322.3 billion KRW, representing 11.9% of consolidated revenue — dwarfing the roughly 1% typical of traditional Korean banks.

On the offline infrastructure front, Toss is deploying smart payment terminals called "Toss Front" through subsidiary Toss Place, targeting 500,000 units by 2026 and 700,000 by 2027. Its "FacePay" biometric payment service has already surpassed 1 million cumulative sign-ups within eight months of beta launch, establishing the beachhead for offline blockchain payments.

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The Regulatory Wild Card: Digital Asset Basic Act

The trajectory of Toss's blockchain ambitions depends critically on South Korea's Digital Asset Basic Act, a comprehensive regulatory framework currently making its way through the legislative process. The central debate revolves around who gets to issue won-denominated stablecoins.

The Bank of Korea advocates for the so-called "51% Rule," which would restrict stablecoin issuance to consortia where banks hold majority (51%+) equity stakes. The Financial Services Commission (FSC), however, has warned that such restrictions could block fintech companies with superior technical capabilities from market entry, stifling innovation and competition.

South Korea remains the only major Asian market without dedicated stablecoin legislation, creating significant regulatory uncertainty. The government has committed to finalizing the framework within 2026, but disagreements between regulatory bodies could push timelines further. The United States' recent classification of major virtual assets as "digital commodities" has added pressure for global regulatory alignment.

For Toss specifically, the 51% Rule represents an existential question: if banks must control stablecoin-issuing entities, Toss would need to structure its operations through Toss Bank rather than the parent company, potentially constraining its vision of a fully integrated blockchain financial ecosystem.

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The Three-Way War: Toss vs. KakaoPay vs. NaverPay

Toss is not operating in a vacuum. All three of South Korea's fintech giants — each now exceeding 24 million monthly active users — are racing to establish blockchain and stablecoin positions.

KakaoPay has assembled a group-level "Won Stablecoin Task Force" involving top executives from Kakao, KakaoBank, and KakaoPay. KakaoBank is actively recruiting blockchain backend developers. Their advantage: the 49 million-user KakaoTalk messenger ecosystem, Korea's dominant communication platform, which provides unmatched distribution potential.

NaverPay has pursued perhaps the most aggressive strategy, initiating a merger with Dunamu, the operator of Upbit — South Korea's largest cryptocurrency exchange. Dunamu Chairman Song Chi-hyung has signaled plans to invest trillions of won over five years centered on won stablecoin operations. The combination of NaverPay's 51.5% online payment market share with Upbit's exchange infrastructure creates a formidable competitor.

Toss differentiates through its integrated approach: building proprietary blockchain infrastructure that unifies payments, banking, securities, and insurance under a single platform. Its R&D intensity (11.9% of revenue) far exceeds competitors, and its existing proof-of-concept work demonstrates technical readiness.

| Company | Blockchain Strategy | Key Advantage | |---------|-------------------|---------------| | Toss | Proprietary mainnet + TOSSKRW stablecoin | 30M users, integrated financial platform, highest R&D spend | | KakaoPay | Group-level won stablecoin TF | 49M KakaoTalk user base, messaging-content integration | | NaverPay | Dunamu/Upbit merger + multi-trillion won investment | #1 online market share (51.5%), exchange infrastructure |

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Market Impact and Ecosystem Effects

The stakes extend well beyond corporate competition. Korean won-denominated stablecoin transaction volume reached approximately $64 billion in the year through June 2025, and this market is expected to grow explosively as regulatory frameworks mature.

If Toss's blockchain payment network achieves its projected 0.1% merchant fee structure, the impact on South Korea's small business sector would be transformative. Current card payment fees of 2-3% represent a significant burden for small merchants; a 95% reduction would fundamentally alter the economics of retail commerce. Real-time settlement would similarly transform cash flow management for millions of businesses.

Beyond domestic payments, the "borderless" vision encompasses reduced international remittance costs, tokenized securities trading, and AI-driven autonomous financial services — each representing potentially massive new market opportunities.

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Conclusion: Ambitious Vision, Uncertain Timeline

Toss's Money 3.0 strategy represents the most ambitious blockchain initiative in Korean fintech history. The combination of 30 million users, proven technical capabilities, strong financial performance, and a comprehensive product vision positions Toss as a serious contender to reshape how money works in South Korea's digital economy. However, the regulatory uncertainty surrounding the Digital Asset Basic Act, the unresolved 51% Rule debate, and aggressive moves by Kakao and Naver mean that the path from vision to reality remains complex and unpredictable. The second half of 2026 will be decisive: the progress of digital asset legislation will determine the pace and shape of blockchain adoption across all three fintech giants. For investors and users alike, the Korean fintech blockchain race is entering its most consequential phase — and Toss has placed the boldest bet on the table.