South Korea Credit Card Tax Payments Hit ₩15.5 Trillion in 2025; Card Companies Earn ₩134.3bn in Fees

The Quick Take

• Korean taxpayers paid ₩15.5 trillion in national taxes via credit card in 2025, generating ₩134.3 billion in fee income for card companies.
• Samsung Card led with ₩36.6 billion in fee income; Kookmin, Lotte, BC, Shinhan, Woori, Hana, and Hyundai cards also earned significant shares.
• Through July 2026, card tax payment fees had already reached ₩77.8 billion, on pace to exceed 2025 full-year totals.
• Korea's National Tax Service stated it is working to reduce taxpayer burden from card payment surcharges amid political scrutiny.

South Korea's credit card companies generated ₩134.3 billion in fee income from national tax processing in 2025, as card-based tax payments reached ₩15.5 trillion according to data submitted by ruling People Power Party lawmaker Park Sung-hoon to the National Assembly Finance Committee. This revenue stream — mandatory processing fees on captive tax payment flows — represents a structurally durable income source for Korean card companies, insulated from the consumer spending cycles that affect retail fee income. Samsung Card dominated with ₩36.6 billion in fees, with Kookmin, Lotte, BC, Shinhan, Woori, Hana, and Hyundai card networks each earning from the remaining ₩97.5 billion pool across an eight-company oligopoly.

The fee structure creates a politically visible but commercially attractive revenue concentration at listed Korean financial groups. Samsung Card (Samsung Life parent), Shinhan Card (Shinhan Financial Group), and KB Kookmin Card (KB Financial Group) are the three largest listed beneficiaries of this income pool. Unlike merchant category fees which compress with consumer-facing regulation, government-mandated payment surcharges operate in a different regulatory environment — but that distinction is eroding as Parliamentary scrutiny intensifies. Korea's fintech platforms including KakaoPay and Toss are processing growing volumes of tax payments at lower cost, introducing disruptive competition to the legacy card network model.

The forward risk is regulatory fee compression if the National Tax Service acts on its stated intention to reduce taxpayer burden. An effective surcharge reduction from the current ~0.87% average to 0.5% would reduce total fee income from this source by approximately ₩50-60 billion annually — a material hit to card company revenue that flows directly to financial group earnings. Korean card company investors should monitor National Assembly Finance Committee deliberations and NTS fee-schedule consultations over the next 12 months as leading indicators of regulatory risk materialisation. The 2026 run-rate of ₩77.8 billion through July implies a full-year total of ₩133-135 billion, roughly tracking 2025 — but regulatory action could break this trajectory sharply in either direction.

Synthesized from 2 sources.