Two methods, two philosophies

The Comparable Uncontrolled Price (CUP) method and the Transactional Net Margin Method (TNMM) sit at opposite ends of the transfer pricing spectrum. CUP is a transaction-level, price-based method demanding near-identical comparables. TNMM is a net-margin-based method that tolerates more product and functional differences by comparing overall profitability rather than individual prices. Choosing correctly is often the single biggest driver of whether a TP position survives assessment.

How CUP works

CUP compares the price charged in a controlled transaction directly against the price charged in a comparable transaction between unrelated parties — either an "internal CUP" (the same taxpayer transacting with an unrelated party on similar terms) or an "external CUP" (published prices or third-party comparables). Because it compares price directly, CUP demands a very high degree of comparability in product, contractual terms, market level, geography and timing.

Best suited for: commodities with quoted market prices, standardised financial transactions (e.g., intercompany loan interest benchmarked against market rates), and royalty rates supported by comparable licensing agreements.

How TNMM works

TNMM examines the net profit margin (relative to an appropriate base — costs, sales or assets) that a party to a controlled transaction earns, and compares it to the net margins earned by independent enterprises in comparable transactions. Because net margins are less sensitive to minor product and functional differences than price itself, TNMM allows a broader, more workable set of comparable companies — usually drawn from public financial databases.

Best suited for: contract manufacturers, captive service providers (IT/ITES, KPO, contract R&D), and limited-risk distributors, where a company-wide margin is a more reliable and available benchmark than transaction-level pricing.

Side-by-side comparison

  • Comparability standard: CUP requires high comparability; TNMM tolerates broader comparability.
  • Data availability: CUP needs transaction-level price data (often hard to find); TNMM uses widely available company financials.
  • Sensitivity to differences: CUP is highly sensitive to product/contract differences; TNMM is more resilient.
  • Typical use case: CUP for commodities, loans, royalties; TNMM for manufacturing, distribution and services.
  • Assessment scrutiny in India: TNMM is more commonly accepted due to comparable data availability, but CUP — where genuinely applicable — is often preferred by tax authorities as the more direct method.
Indian TP jurisprudence has repeatedly held that where a reliable internal CUP exists, it should generally be preferred over TNMM — making early identification of internal comparables a critical first step in method selection.

How we choose the right method

We start every engagement with a functional, asset and risk (FAR) analysis, then test data availability for each of the six prescribed methods before settling on the "most appropriate method" — the standard the law actually requires, rather than defaulting to whichever method is administratively easiest.