GMM (Gross Margin Method): Definition and the India Fit
The GMM defined: the gross margin (sales minus cost of goods sold, over sales) tested against the comparables — the India method for the spread-function, with the COGS discipline.
Definition
The GMM — the gross margin method — is one of India’s prescribed methods, testing the transaction on its gross margin rather than its net profitability: the gross profit as a percentage of sales (the sales minus the cost of goods sold, over the sales), compared between the controlled transaction and the comparable uncontrolled transactions. No operating expenses enter the ratio — that is the point and the risk. For the function whose value is the spread between what it buys and what it sells (the distribution, the resale, the buying-and-selling), the gross margin isolates exactly the function’s contribution; in the wrong fact pattern, the ratio collapses under the denominator noise.
Gross margin = (sales − cost of goods sold) ÷ sales
Controlled transaction’s gross margin vs the comparables’ gross margins
(the range, the position — the [IQR](/docs/glossary/interquartile-range) on
the comparables, the tested party’s margin in it)| The element | The content |
|---|---|
| The ratio | The gross margin (the sales minus the COGS, over the sales) — no operating expenses (the people, the premises, the support are excluded — the signal is the spread, the operating costs are the noise) |
| The fit | The spread-function — the distribution, the resale, the buying-and-selling (the function’s value is the buy-sell spread) — where the gross margin isolates the contribution and the operating-cost noise would dilute it |
| The COGS discipline | The COGS definition — the exclusions (the admin overheads, the finance costs) and the inclusions (the direct material, the direct labour, the manufacturing overhead for the in-house production, the import duties where the comparator’s economics include them) — stated and applied identically to the tested party and the pool; one definition difference moves the whole range |
| The range | The comparables’ gross margins (the IQR, the mid-point) — the tested party’s margin tested against the pool, on the stated COGS definition |
The working distinction (the GMM guide and the methods overview): GMM and TNMM differ in the numerator’s scope — the gross margin (the spread, the operating costs excluded) against the operating margin (the operating result, the operating costs in). GMM is sharper for the spread-function (the operating costs are the noise, excluded — the signal clean), coarser for the function whose value is the operating result (the operating costs are the economics, excluded — the signal lost). The RPM is the direct price method on the same reseller facts (the resale price minus the routine mark-up); GMM is the margin method on them (the gross margin benchmarked) — the best method rule weighs the fit on the comparability facts.
Example
The tested party (an Indian distributor) buys the group’s product (the COGS ₹80 per unit, on the stated definition — the direct costs, the import duties, the overheads excluded) and resells it at ₹100 (the sales). The gross margin is (100 − 80)/100 = 20%. The pool (the comparable distributors, the same COGS definition) distributes at the IQR 18%–24%, mid-point 21% — the tested party’s 20% is inside, 1 point below the mid-point. The documentation: the COGS definition stated (the inclusions, the exclusions), applied identically, the pool’s comparability on the definition — the GMM guide standard.
See also
FAQ
GMM or TNMM for the distributor? GMM, where the function’s value is the spread (the buy-sell difference — the distribution, the resale, the buying-and-selling) and the operating costs are the noise (the people, the premises, the support — the costs that dilute the spread signal). TNMM (the OP/S), where the function’s value is the operating result (the operating costs are the economics — the service provider, the function that carries the overhead). The GMM guide has the fact-pattern mapping; the best method rule weighs the comparability.
What is the COGS discipline, concretely? The COGS definition, stated and applied identically to the tested party and the pool: the inclusions (the direct material, the direct labour, the manufacturing overhead for the in-house production, the import duties where the comparator’s economics include them) and the exclusions (the admin overheads, the finance costs, the operating expenses). The ratio is only as clean as the COGS data — one definition difference between the tested party and the pool moves the whole range, which is why the definition is the documentation’s first block, not its footnote.
Is the GMM the same as the UCPM (the uncontrolled comparable profit method)? The GMM is the gross-margin method (the spread over the sales, the operating costs excluded) — the method listed in India’s prescribed set (the methods overview has the family). The UCPM (the uncontrolled comparable profit) is the net-profit variant in the same family (the comparable’s profit, the operating costs in). The two are distinct ratios on the same comparison logic — the gross margin against the comparable’s gross margin, the profit against the comparable’s profit — and the file states which ratio, on which definition, it runs.
Run the screens as a study, not a spreadsheet
Quartyl applies the method, PLI and screening steps above as a pipeline — and keeps a documented reason for every exclusion.
Related docs
Gross Margin Method in India: The Underused Alternative to TNMM
The Gross Margin Method under Indian transfer pricing rules — when GMM beats TNMM, denominator discipline, how TPOs treat it, and a worked example with gross margin on sales.
Read docRPM (Resale Price Method): Definition and the Distributor Fit
The RPM defined: the resale price minus the routine mark-up — the method that works backwards from the reseller’s price to the reseller’s purchase, the distributor’s method.
Read doc