[KRW Stablecoin] Secondary Financial Sector's Bold Entry and Crypto Tax Navigation Guide

Introduction: The Secondary Financial Sector's Aggressive Pivot into Stablecoins

The most striking transformation in the South Korean digital asset landscape in mid-2026 is the aggressive entry of the secondary financial sector into the fiat-backed stablecoin ecosystem. Starting in May 2026, Welcome Payments, a subsidiary of the Welcome Financial Group, established a strategic alliance with the blockchain enterprise BPMG and the offline payment infrastructure operator VDCrux to launch a comprehensive stablecoin-based real-world payment service. In a parallel move, OK Savings Bank formed a consortium with Danal, South Korea's leading payment gateway (PG) provider, aiming to expand digital finance operations into the Southeast Asian market while establishing a robust domestic stablecoin payment network. Historically, it was widely anticipated that commercial banks would secure a firm monopoly over the stablecoin market, fortified by the impending "51% bank ownership rule" under the Phase 2 of the Digital Asset Basic Act. However, by leveraging extensive merchant networks and advanced fintech infrastructure, these secondary financial institutions are actively driving a crack into the commercial banking monopoly. This seismic shift in the market structure, combined with the imminent enforcement of crypto taxation, presents critical implications for both investors and corporate entities.

Legal Background: Digital Asset Basic Act Phase 2 and the Tax Regime

At present, the South Korean National Assembly and the Financial Services Commission (FSC) are engaged in intense deliberations over Phase 2 of the Digital Asset Basic Act, which will govern the issuance and circulation of stablecoins. The primary regulatory battleground lies in the qualifications for KRW stablecoin issuers. Seeking to mitigate the systemic risks of bank runs and "coin runs," financial authorities and the Bank of Korea have maintained a conservative stance, pushing for a mandate that restricts stablecoin issuance exclusively to consortiums where commercial banks hold at least a "50% + 1 share" majority. Conversely, financial think tanks and industry advocates argue for a more inclusive model that grants issuance and distribution licenses to fintech firms and secondary financial institutions, thereby striking a balance between financial stability and innovation.

On the taxation front, according to the Ministry of Economy and Finance, the long-delayed crypto capital gains tax will come into full effect starting January 1, 2027. Digital asset trading and lending profits exceeding the basic annual deduction threshold of 2.5 million KRW will be subjected to a 22% tax rate (comprising a 20% "Other Income" tax and a 2% local income tax). Despite ongoing controversy regarding tax equity—especially following the abandonment of the financial investment income tax for traditional stock investors—the tax authorities are rapidly establishing the necessary infrastructure to integrate digital assets into the institutional framework. Since stablecoins are legally classified as virtual assets, any foreign exchange gains or staking rewards generated through them will be fully subject to this tax.

Core Analysis: Survival Strategies and the Cracking of the Bank Monopoly

The strategic maneuvers of Welcome Payments and OK Savings Bank represent a pragmatic approach: while commercial banks are hyper-focused on securing "issuance licenses," the secondary financial sector is aggressively securing the "distribution and payment rails" that end-users actually utilize. Welcome Payments plans to integrate digital assets directly into its "Welcome Pay" application using its prepaid electronic payment expertise. Through its partnership with VDCrux, it aims to transplant this system into major offline F&B franchise networks. Similarly, OK Savings Bank is harnessing Danal's global network of hundreds of thousands of online and offline merchants to build a borderless real-world payment infrastructure.

These proactive measures pose a significant threat to commercial banks. Even if commercial banks successfully monopolize the issuance of KRW stablecoins, their efforts will be severely hindered without an active distribution network. However, this rapid paradigm shift brings substantial macroeconomic concerns. Institutions like the Bank of Korea and the Bank for International Settlements (BIS) have recently issued warnings about severe liquidity risks. There is a tangible fear of a massive "money move" where depositors withdraw capital from low-yielding savings bank accounts to invest in high-yield stablecoin DeFi protocols. Such capital outflows could trigger severe bank runs within the secondary financial sector and significantly undermine the efficacy of the central bank's monetary policies.

Practical Guide: Actionable Steps for Investors and Tax Filers

As the 2027 cryptocurrency taxation enforcement approaches, individual investors and corporations must take proactive compliance measures. First and foremost, tracking the acquisition cost basis is critical. For stablecoins acquired before the implementation date, the tax authorities will recognize the higher value between the actual purchase price and the market price on the day immediately preceding the tax enforcement. However, for users transacting on overseas exchanges or decentralized exchanges (DEXs), transaction data will not automatically synchronize with the National Tax Service (NTS) systems. Failing to provide verifiable historical transaction records could result in the acquisition cost being evaluated at "zero," exposing the investor to exorbitant tax liabilities on the entire capital amount.

Second, investors must meticulously segregate and document network gas fees and transaction costs, as these are eligible for tax deductions as necessary business expenses. For high-frequency traders, properly accounting for these operational costs can result in substantial tax relief.

Third, corporations integrating stablecoins into their B2B payment rails must rigorously overhaul their internal controls and accounting standards. Corporate crypto gains are subject to standard corporate tax laws. To avoid severe penalties under the Foreign Exchange Transactions Act, firms must establish clear documentation protocols, ensuring meticulous tracking of FX variations and the origins of cross-border stablecoin funds.

Outlook & Implications: Regulatory Trajectories and Future Scenarios

A crucial aspect to monitor moving forward is whether the regulatory authorities will dilute the controversial "51% bank rule" during the final legislative process of the Digital Asset Basic Act Phase 2 in late 2026. Momentum is building to grant conditional issuance and distribution licenses to non-bank entities that possess advanced payment infrastructure and fintech capabilities, mirroring the strategies of Welcome Payments and OK Savings Bank. Much like the regulatory clarity provided by the GENIUS Act in the United States, which effectively connected stablecoins to credit card payment rails, South Korea is expected to eventually pivot towards an open-architecture distribution model.

Furthermore, policymakers are keeping a close watch on the rapid infiltration of US dollar-pegged stablecoins like USDC and USDT into South Korea's cross-border payment and inbound tourism sectors. If the institutionalization of KRW stablecoins is continually delayed, domestic payment networks risk becoming entirely dependent on dollar-based digital assets. Consequently, financial authorities are expected to expedite the establishment of an orchestration layer that emphasizes global interoperability rather than merely restricting issuance rights.

Conclusion

The bold foray into the stablecoin ecosystem by secondary financial institutions, spearheaded by Welcome Payments and OK Savings Bank, is injecting unprecedented real-world payment innovation into a market traditionally dominated by commercial banks. This trend represents a critical catalyst that will accelerate the mainstream adoption of KRW stablecoins. In light of these developments, South Korean crypto investors, blockchain professionals, and tax specialists must urgently formulate robust tax mitigation strategies ahead of the 2027 cryptocurrency tax implementation. Simultaneously, market participants must remain highly adaptable to the accelerating convergence of the real economy and on-chain finance driven by the secondary financial sector.