What is Transfer Pricing?

How it works

Per PwC US Corporate Group Taxation:

Transfer pricing regulations govern how related entities set internal prices for the transfers of goods, intangible assets, services, and loans in both domestic and international contexts. The regulations are designed to prevent tax avoidance among related entities and place a controlled party on par with an uncontrolled taxpayer by requiring an arm's-length standard.

The arm's-length standard is the global cornerstone, codified in OECD Model Treaty Article 9 and implemented in domestic transfer-pricing rules in 100+ countries. The standard asks: would unrelated parties have agreed to this price under similar circumstances? If not, the controlling jurisdiction can adjust taxable income upward.

OECD methods

The OECD Transfer Pricing Guidelines recognise five primary methods:

1. Comparable Uncontrolled Price (CUP) — find a comparable transaction between independent parties; use that price. Most reliable when good comparables exist (commodities, simple goods).
2. Resale Price Method (RPM) — start from the price the related distributor charges third parties; subtract a market-rate gross margin. Used for distributors.
3. Cost-Plus — add a market-rate mark-up to the related supplier's cost. Used for manufacturers, contract R&D.
4. Transactional Net Margin Method (TNMM) — compare the operating margin of the related entity to that of comparable uncontrolled enterprises. Most widely used in practice because comparables are easier to find at the operating-margin level.
5. Profit Split — for highly integrated operations or jointly-developed intangibles. Allocate combined profit based on each entity's contribution.

Method selection depends on functional analysis (what each related party does, what assets it uses, what risks it bears) and comparable availability.

Documentation tiers (per OECD BEPS Action 13)

Three-tiered approach widely adopted:

• Master File — group-level documentation (organisation, business, intangibles, financing, financial position).
• Local File — entity-specific (related-party transactions, comparables, methods).
• Country-by-Country Report (CbCR) — for groups with consolidated revenue ≥ €750M (≥ $850M per US PwC). Reports income, taxes, headcount, assets per jurisdiction.

US-specific: groups with $850M+ revenue file IRS Form 8975 (per PwC US Corporate Group Taxation). The IRS exchanges the report with treaty partners under bilateral Competent Authority Arrangements (CAAs).

Advance Pricing Agreements (APAs)

To avoid potential transfer-pricing penalties (per PwC US):

One avenue available to companies may be to obtain an advance pricing agreement (APA) with the IRS, unilaterally, or with the IRS and another tax authority, bilaterally, covering inter-company pricing.

APAs typically cover 5 years prospectively, optionally rolled back to recent open years. Bilateral APAs (negotiated between two tax authorities) provide certainty across both jurisdictions. Process is multi-year and expensive — useful for material recurring transactions.

Examples

• US parent licenses IP to French SARL sub at $1M/year. TP analysis: comparable arm's-length royalty rate is 5-7% of French sub's revenue. If French sub revenue is $50M, $1M royalty = 2% — below arm's-length range. France can deny part of the royalty deduction; US can adjust royalty income upward — both adjustments without coordination = double tax.
• UK parent provides management services to a Dutch sub at cost. Arm's-length should include a mark-up (typically 5-10% on services). UK / Netherlands adjustments could shift €100k of profit upward in UK → MAP needed for Netherlands offset. APA pre-empts the dispute.

Common mistakes

• Assuming transfer pricing only applies to large multinationals. The arm's-length principle applies to any related-party cross-border transaction, regardless of size. Documentation thresholds vary, but the core obligation doesn't.
• Skipping intercompany agreements. Without a written agreement specifying the service, scope, pricing, and terms, the tax authority can recharacterise the transaction or deny deductions entirely.
• Treating cost-plus 5% as a default. The right mark-up depends on functional analysis. A routine back-office service might be cost +5%; a strategic R&D function might be cost +15-20%. Wrong mark-up = adjustment risk.
• Ignoring MAP. When an adjustment hits, MAP is the only path to relief from double tax. Slow, but the alternative is paying tax twice.