South Korea Transfer Pricing Policy

Korea applies the arm’s-length principle to international transactions between related parties under its international tax coordination legislation, administered by the National Tax Service. The regime is long-established and its distinguishing administrative feature is the combined annual report: a structured submission of international transaction information filed with the corporate return.

That structured filing does two things. It gives the authority a comparable view of a taxpayer’s related-party dealings year on year, and it puts the taxpayer’s method selection on the record annually — so a change of method without an explanation is visible immediately rather than discovered in an audit.

Korea’s treaty network and its advance pricing agreement practice are both well used, and Korean adjustments frequently involve a counterparty jurisdiction with an equally developed regime. That means a Korean file is rarely written for Korea alone.

Why this page quotes no figures

No South Korea figures appear on this page — no statute reference, no size threshold, no penalty, no due date. The mechanism is described instead. South Korea’s detail is revised often enough that a figure published today is a liability tomorrow, and in transfer pricing the client is the one who carries it. Every figure a live file depends on is confirmed against the National Tax Service (NTS) for the relevant period at the time the work is done.

The Korean set combines annual reporting of international transactions filed with the return, documentation the taxpayer must hold to support the arm’s-length nature of those transactions, and the master file and country-by-country reporting obligations for groups above the reporting threshold. The reporting obligation and the documentation obligation are separate; satisfying one does not satisfy the other.

Because the annual report asks for the method applied to each category of transaction, the documentation and the report have to be prepared together. A report that names one method and a file that reasons to another is a contradiction the taxpayer created itself.

The monetary thresholds that trigger each obligation and the submission deadlines are set in Korean legislation and revised periodically. We confirm the current position against National Tax Service guidance for the year in question rather than state a figure here.

The three-tier documentation shape

Almost every regime in this guide organises documentation the way BEPS Action 13 recommended: a master file describing the group, its structure, its intangibles and its financing; a local file describing the local entity’s own controlled transactions and the analysis behind their pricing; and a country-by-country report giving administrations an aggregate view of where the group books revenue, profit, tax and people. The reporting threshold the OECD agreed is EUR 750 million of consolidated group revenue, or a near equivalent amount in domestic currency as of January 2015 (OECD, Action 13 country-by-country reporting (oecd.org)). What each jurisdiction actually enacted in its own currency varies, and no such figure appears here — the local equivalent is one of the things confirmed against the authority during an engagement rather than published from memory.

What we confirm before a South Korea file is signed off

• Which documentation tiers this group actually owes for this period, tested against NTS’s current requirements rather than last year’s.
• Whether the transaction list is complete. The goods and the service fee are always on it; the guarantee, the secondment, the shareholder loan and the one-off recharge are the ones that are not.
• That the intercompany agreements, the invoices and the management accounts agree with each other and with the policy the file describes.
• That nothing here contradicts what the group has already filed about South Korea elsewhere. Administrations exchange that data, so the inconsistency arrives before the auditor does.

Korea works from the OECD method set and requires the most reasonable method for the transaction. Korean practice gives significant attention to the functional analysis behind the choice of tested party, and to intra-group service charges — where the recurring question is whether the Korean entity received an identifiable benefit rather than a share of a group cost pool.

The five methods in the OECD framework

Comparable uncontrolled price (CUP)

Prices the controlled transaction directly against a comparable transaction between independent parties. The most persuasive method where a genuine comparable exists, and the hardest to satisfy — small differences in product, volume, market or contractual term break comparability, so it is strongest on commodities, listed instruments and licences with published rates.

Resale price

Works backwards from the onward sale: take what the related reseller got from an unrelated buyer and deduct the gross margin an independent reseller would have earned. It fits a distributor that adds no physical value, and it lives or dies on whether the comparison companies carry the same functions and risks.

Cost plus

Adds an arm’s-length mark-up to the costs the related supplier incurred. The natural fit for contract manufacturing and routine services, and the disputes are almost all about the cost base rather than the percentage — what was included, what was pushed below the line, and whether the accounting stayed the same.

Transactional net margin (TNMM)

Tests a net-level return — margin on sales, on total costs or on assets — against a set of independent companies with comparable functions. Robust to product mismatches and fragile to comparable selection, so the screening decisions and the adjustments matter more here than the arithmetic does.

Profit split

Allocates the combined profit according to what each party contributed. It is the method for genuinely two-sided situations: both parties bringing something unique and valuable, operations too integrated to price one side in isolation, or risk that both parties genuinely share.

No method is correct in the abstract. The one that holds up in South Korea is the one whose selection is reasoned on the record — with the alternatives named and rejected for stated reasons — because a method presented without alternatives reads as a default rather than a choice.

Most of the value in a South Korea engagement is upstream of the write-up. Getting the transaction described accurately — who did what, who carried which risk, what the intercompany agreements actually say — decides everything the analysis can then support.

What a South Korea engagement covers

• Mapping and delineating the transactions. We list every related-party flow through the South Korea entity and tie it back to the ledger first, because an analysis of an incomplete list is an incomplete analysis.
• Functional and risk analysis. What the South Korea operation actually does, who makes the decisions, and which risks it is genuinely in a position to control — the step that decides whether the rest of the file can stand.
• A reasoned method for each tested transaction, written up with the alternatives that were considered and why they were not used. A method with no alternatives on the page reads as a default.
• Benchmarking with the search shown. Comparable selection, screening decisions and comparability adjustments documented so a reviewer can reproduce them instead of re-running them.
• A file in the form NTS expects, reconciled to the group master file and to whatever has already been said about South Korea in another jurisdiction’s filing.
• Where the numbers come from. Every threshold, deadline and rate that ends up in the file is confirmed against the National Tax Service (NTS) for the period concerned, and anything we cannot confirm is described as a mechanism instead of guessed at.

Advance certainty and dispute resolution

Korea operates an advance pricing agreement programme, unilateral and bilateral, and provides the mutual agreement procedure under its treaties. Because the annual report puts the taxpayer’s method on the record, a Korean advance agreement also has the effect of settling what that report will say for the years it covers.

How we work

The fee is agreed in writing before any work starts, and you review the result before anything is filed. Where your South Korea entity sits relative to our offices makes no difference to how the file gets built. If you want to talk it through first, the helpline answers 24 hours a day and there is no obligation attached to a call — contact us or read our transfer pricing service page for what a full engagement includes.

What has actually changed in South Korea is the starting point of an audit. It used to begin with an information request; it now begins with the group's own exchanged data and a risk assessment already formed. That moves the taxpayer's work earlier — the file has to be persuasive on arrival rather than developed in correspondence.

Where challenges concentrate in South Korea

• Intra-group service and management fees paid out of Korea are examined for identifiable benefit to the Korean entity. Allocation keys carried over from group management reporting are the most common weakness, because they were built to apportion cost rather than to evidence benefit.
• Royalties for technology and brands used in Korea attract attention where the Korean entity also invests in local development or local market building. The compensation question that follows is a records question, and the records have to have been kept at the time.
• A Korean entity contractually characterised as low-risk while its own staff make the pricing and inventory decisions is the characterisation dispute that recurs. The functional analysis has to describe the decisions, not the job titles.

What it costs when the file is not there

The cost of a thin file in South Korea is rarely just the tax. It is the adjustment, the charge or penalty attached to it, the years it stays open, the management time an audit consumes, and the corresponding position in the counterparty jurisdiction that may not be relieved. Priced against that, the documentation is the cheap part.

By business size

Owner-managed group

A Korean subsidiary with a single foreign affiliate files the annual international transaction information and needs a written arm’s-length basis behind it.

Mid-market group

Several transaction categories mean several methods, all of which appear on the annual report and all of which have to be supported.

Multinational group

Master file and country-by-country reporting engage, and the Korean file has to reconcile with what the group reported for Korea.

By industry

Electronics and semiconductors

Deeply integrated related-party supply with jointly developed process technology puts goods pricing and intangible contribution into one analysis.

Automotive and components

Tiered related-party supply into and out of Korea means several tested transactions in one entity, each needing its own comparable set.

Cosmetics and consumer brands

Locally funded marketing behind a foreign-owned brand raises the same question about who built the local equity that arises across the region.

Industry is a useful first cut and a poor final answer. What decides a South Korea file is the shape of the group and what the intercompany agreements actually say, which is why two competitors of identical size can face entirely different analyses. Use the sector to know where to start looking.