Banking Sector

The collective body of banks and similar financial institutions engaged in financial intermediation such as deposits, loans, and payments, serving as a key axis for monetary policy transmission and fi

Banking Sector

Overview

The banking sector (銀行圈) refers to the collective body of banks and similar financial institutions that perform core financial intermediation functions such as taking deposits, lending, payment settlement, and foreign exchange. It is the main channel through which a country's monetary policy is transmitted to the real economy, and it forms the foundation of financial system stability, depositor protection, and funding for households and businesses. Accordingly, the soundness, profitability, and competitive structure of the banking sector have a direct impact on the macroeconomy as a whole.

Main Content

Definition and Scope

In the narrow sense, the banking sector refers to commercial banks, regional banks, and special-purpose banks licensed under the Banking Act. In a broad sense, the term encompasses internet-only banks, domestic branches of foreign banks, mutual savings banks, mutual finance cooperatives such as credit unions (Shinhyup) and the agricultural and fisheries cooperatives (Nonghyup, Suhyup), postal savings, and specialized credit finance companies. In practice, the ability to take deposits and participation in the payment settlement network serve as the key criteria distinguishing the banking sector.

Structure of the Korean Banking Sector

  • Commercial banks: KB Kookmin Bank, Shinhan Bank, Hana Bank, Woori Bank, NH Nonghyup Bank, and others operate nationwide branch networks under financial holding company structures.
  • Regional banks: Busan Bank, Kyongnam Bank, Daegu Bank, Kwangju Bank, Jeonbuk Bank, and Jeju Bank, among others, are based on regionally focused operations.
  • Special-purpose banks: Korea Development Bank, IBK Industrial Bank of Korea, Export-Import Bank of Korea, and Nonghyup and Suhyup banks handle policy finance and support for specific sectors.
  • Internet-only banks: KakaoBank, K bank, and Toss Bank have expanded mobile-centered lending to mid- and low-credit borrowers and platform finance.

Main Businesses

Deposit-taking (deposits, installment savings, CMA), lending (household loans, corporate loans, mortgage loans), foreign exchange and remittances, payment settlement, wealth management (WM), investment banking (IB), trusts, and bancassurance are typical. Recently, there has been a clear trend of combining with non-financial platforms through MyData, open banking, and embedded finance.

Prudential Regulation

Under the Basel III framework, the banking sector is subject to regulations such as the BIS capital adequacy ratio, common equity tier 1 ratio, liquidity coverage ratio (LCR), and net stable funding ratio (NSFR). Domestically, the Financial Services Commission and the Financial Supervisory Service supervise it, and systemically important banks (D-SIBs) are subject to additional capital surcharges and stress tests. Under the Depositor Protection Act, deposits are protected up to 50 million won per person (including interest).

Profit Structure

Bank profits are divided into interest income and non-interest income. Interest income depends on the loan-deposit rate spread and net interest margin (NIM), while non-interest income arises from fees, foreign exchange and derivatives, and securities trading. During economic downturns, increased provisioning for loan loss reserves heightens earnings volatility.

Recent Trends

In 2024–2025, the banking sector is undergoing clear changes amid the end of the high-interest-rate cycle and the shift toward policy rate cuts. First, as interest income growth slows due to the narrowing loan-deposit margin, diversification into fees, wealth management, and non-interest areas is accelerating. Second, as the large-scale losses in 2024 on ELS tied to the Hong Kong H index overlapped with concerns over real estate project financing (PF) defaults, compensation and provisioning burdens and risk management capabilities have emerged as key issues.

Third, amid a strengthened stance on household debt management, the debt service ratio (DSR) regulation and stress DSR have been expanded in stages, and banks are curbing loan growth by adjusting mortgage limits and interest rates. Fourth, as platform competition intensifies among internet-only banks, big tech, and fintech companies, generative AI-based consulting, hyper-personalized recommendations, and services linked to tokenized securities and virtual assets are being tested.

Fifth, as pressure for co-prosperity finance grows, interest refunds, interest rate cuts for small business owners, and support programs for vulnerable borrowers are becoming regularized. Sixth, the weakening competitiveness of regional banks and discussions of mergers and acquisitions, restructuring of governance centered on financial holding companies, and demands for stronger internal controls are also major topics. Seventh, climate risk disclosure, ESG finance, and pilot programs for digital currency (CBDC) and deposit tokens are emerging as mid- to long-term tasks.

In this environment, the core competitiveness of the banking sector is converging on capital soundness, the speed of digital transformation, the sophistication of risk management, and the capacity to expand non-interest income.

Related Topics

  • [[Bank of Korea]]
  • [[Policy Rate]]
  • [[Financial Services Commission]]
  • [[Depositor Protection System]]
  • [[Internet-only Bank]]
  • [[Household Debt]]
  • [[Real Estate PF]]
  • [[Capital Adequacy Ratio]]