Hiring a CPA Firm in Korea: What to Look For

When foreign companies establish operations in Korea, one of the most consequential early decisions is who will handle their accounting, tax, and compliance work. Many international businesses underestimate what this decision involves — and the gap between a capable Korean CPA firm and an inadequate one can mean the difference between clean compliance and a costly NTS audit finding. This guide helps you understand what to look for, how to evaluate your options, and what to expect from a qualified partner.

Why a Korean CPA Firm — Not Just a Bookkeeper

In Korea, the term “bookkeeper” (경리) and “CPA firm” (회계법인 or 세무법인) describe fundamentally different levels of service and legal accountability.

A bookkeeper records transactions and processes payroll. A CPA firm does all of that — but also prepares and signs off on statutory financial statements, advises on tax structuring, represents you in NTS audits, manages transfer pricing documentation, and provides opinions on complex accounting treatments. Only a licensed Certified Public Accountant (공인회계사) can issue an audit opinion on financial statements, which becomes a legal requirement once your company crosses the external audit thresholds.

For foreign-invested companies specifically, the stakes are higher. Cross-border transactions require treaty analysis, withholding tax management, and transfer pricing documentation that a bookkeeper is neither qualified nor legally permitted to provide.

What Services to Expect from a Korean CPA Firm

A full-service Korean CPA firm engaged by a foreign-invested company should provide:

• Monthly bookkeeping and management accounts: Transaction recording, trial balance, and monthly management reporting in formats understandable to your global finance team
• VAT compliance: Quarterly VAT return preparation, e-tax invoice management, and VAT refund applications
• Payroll processing: Monthly salary calculation, social insurance administration, income tax withholding, and year-end payroll settlement (연말정산)
• Corporate tax return: Annual corporate income tax filing including tax adjustment workpaper and disclosure of related-party transactions
• Withholding tax management: Monthly withholding tax returns on both domestic and cross-border payments
• Financial statement preparation: Statutory financial statements in accordance with K-GAAP or K-IFRS
• Transfer pricing documentation: Preparation of local files and master files for related-party transaction documentation
• External audit coordination: Liaison with the external auditor and preparation of audit support schedules (note: external audit itself must be performed by a firm separate from your tax/accounting firm)
• NTS correspondence: Handling of NTS inquiries, tax audit support, and objection filings

Big 4 vs. Mid-Size vs. Boutique Firms

Korea has a well-developed CPA industry. Understanding the landscape helps you choose the right fit:

Big 4 Firms (Samil, Samjong, Anjin, Hana)

The Korean affiliates of Deloitte, PwC, EY, and KPMG serve the largest multinational corporations, listed companies, and financial institutions. For foreign companies with complex structures, multiple Korean entities, or listed-company consolidation requirements, Big 4 involvement may be appropriate. However, fees are high, partner attention on smaller clients is limited, and mid-level staff handle most day-to-day work. English language capability exists but is concentrated at senior levels.

Mid-Size Firms

Korea has a number of well-regarded mid-size CPA firms with broad industry expertise, multiple partners, and solid English-language capabilities. These firms often serve foreign-invested companies with Korean revenues in the KRW 5–200 billion range. They offer more partner-level involvement than Big 4 at a significantly lower fee structure. Service quality is generally strong for standard corporate accounting, tax, and compliance work.

Boutique and Specialist Firms

Boutique firms — often led by CPAs with Big 4 backgrounds — specialize in specific client types, such as foreign-invested companies, specific industries (IT, manufacturing, financial services), or inbound M&A transactions. For foreign companies that are newly established, small-to-medium in size, and need bilingual communication with their parent’s finance team, a well-chosen boutique firm often delivers the best combination of quality, responsiveness, and value.

Language Capabilities Matter

One of the most important and underrated criteria for foreign-invested companies is genuine bilingual capability. This means more than having a staff member who passed an English test — it means the CPA managing your account can:

• Explain complex Korean tax positions to your global finance team in clear English
• Translate NTS correspondence and explain its implications accurately
• Prepare management reports in a format your parent company can understand without translation
• Participate in calls and meetings with your headquarters finance or tax team

Many accounting firms in Korea market English services but in practice route all English communication through a single junior staff member. During due diligence, test the actual English-language capability of the partner and manager who would handle your account.

Fee Structures

Korean CPA firm fees for foreign-invested company services are typically structured as follows:

• Monthly retainer: Covers bookkeeping, VAT returns, payroll processing, and monthly reporting. Ranges from KRW 800,000–3,000,000 per month depending on transaction volume and complexity.
• Annual corporate tax return: Billed separately as a fixed fee or time-based. Typically KRW 1,500,000–5,000,000 for a standard return; more for transfer pricing disclosures or complex structures.
• Transfer pricing documentation: Priced per entity, typically KRW 3,000,000–10,000,000 depending on the number of intercompany transactions and complexity of the study.
• Ad hoc advisory: Hourly rates for tax opinions, NTS audit support, and transaction structuring advice. Hourly rates for senior CPAs typically range from KRW 200,000–500,000.

Beware of unusually low retainer fees. Very low monthly fees typically signal that the firm intends to outsource your work to a non-licensed bookkeeper, leaving actual CPA oversight minimal. The cost of a tax assessment or missed compliance obligation will far exceed the fee savings.

Red Flags to Watch For

When evaluating Korean CPA firms, the following warning signs warrant caution:

• No named CPA taking direct responsibility: If no licensed CPA is clearly accountable for your account, the firm may be delegating work entirely to non-licensed staff
• Inability to explain Korea tax law in English: A real test of capability, not just English proficiency
• No experience with foreign-invested companies: Transfer pricing, treaty applications, and cross-border withholding require specific expertise that general domestic-focused firms may lack
• Slow response to NTS inquiries: NTS response deadlines are strict; a firm that does not prioritize timely responses creates significant risk
• No written engagement letter: The scope of services, fees, and responsibilities should be documented in a formal engagement letter
• Conflicts of interest: If the firm simultaneously acts as your external auditor and your tax advisor, ask how independence is maintained — Korea’s audit independence rules require separation of audit and non-audit services for large engagements

How Bricks Insight Can Help

Bricks Insight is a Korean CPA firm specializing in accounting, tax, and compliance services for foreign-invested companies. Led by licensed CPAs with experience in Big 4 firms and foreign-invested company environments, we provide bilingual services covering the full spectrum of Korean compliance requirements — from initial company setup through ongoing bookkeeping, tax filing, transfer pricing, and external audit preparation.

We work with companies in manufacturing, IT services, professional services, and wholesale trade. Our clients include Korean subsidiaries of Japanese, American, European, and Southeast Asian multinationals, as well as privately held businesses with Korean operations.

We believe that Korea compliance does not need to be opaque or stressful. With the right partner, you can build a clean, well-documented, audit-ready financial operation from day one — and focus your energy on growing your Korean business.

Looking for a CPA firm in Korea that understands foreign business? Contact Bricks Insight for a consultation.

Reference date: 4월 2026 (based on regulations as of this date)