# Mexico's place in North American production

Economy Study · Mexico · International Trade

Manufacturing exports record the value crossing a border. They do not directly measure the income created within Mexico. Imported components, domestic suppliers, assembly, transport, and distribution all enter the production process, but their contribution must be separated before export expansion is interpreted as an equivalent increase in domestic output.

Mexico's position in North American production is therefore best assessed through two related questions. How much activity is located in the country, and how much value is generated by resident producers along the supply chain? A higher export total can accompany stronger domestic linkages, a greater reliance on imported inputs, or both in different industries. The gross number cannot distinguish those outcomes.

## What the manufacturing measure includes

INEGI's [technical note on the value added of global manufacturing exports for 2023](https://www.inegi.org.mx/contenidos/saladeprensa/boletines/2024/VAEMG/VAEMG2023.pdf) explains the construction of VAEMG. It deducts imported intermediate inputs from the defined global manufacturing production measure and also presents the result as direct manufacturing value added plus domestically sourced intermediate inputs. Its published 2023 preliminary results put that measure at 42.6 percent of global manufacturing production.

That is a statistic for a defined production perimeter and reference year. It is not a universal domestic-content percentage applicable to every Mexican export, and it should not be transferred to a new investment project without examining its inputs. The methodology links foreign-trade microdata, economic census information, industrial surveys, and supply-and-use accounts.

The domestic-input component also needs interpretation. A purchase from a Mexican supplier is an economically relevant domestic linkage, but the supplier may itself use imported materials. A complete value-added trade account traces those upstream inputs to avoid treating their full purchase value as domestic income. The scope of VAEMG and that of an economy-wide input-output decomposition should consequently be stated rather than assumed identical.

The analytical benefit is substantial even without a single definitive percentage. Separating the plant's own value added from its domestic procurement identifies where supplier development can matter. It also avoids confusing a growing assembly operation with a proportional expansion of all stages in the production chain.

## Gross exports and domestic income can grow at different rates

Consider a hypothetical exporter selling a product abroad for 100 dollars. It purchases imported components for 60 dollars and domestic intermediate inputs for 15 dollars. Its direct value added is 25 dollars before any further decomposition of those domestic inputs. The 100-dollar export is neither the plant's wage bill nor the total domestic value added.

If an additional order increases sales to 120 dollars while imported components rise to 78 and domestic inputs to 17, direct value added becomes 25 dollars again. Gross exports have increased 20 percent; the plant's own value added has not increased in this simplified accounting. Other domestic suppliers may still benefit from the additional purchases. The example illustrates why each link should be measured explicitly.

Alternatively, an unchanged 100-dollar export can generate more domestic income if a locally produced input replaces an imported component at a competitive cost and the domestic supplier creates additional value. The amount depends on the supplier's own import content and on whether it displaces another domestic activity. Local procurement and national additionality are related but different questions.

These calculations are accounting illustrations, not estimates for Mexico. They identify the information required to evaluate a claim that a particular export expansion deepens domestic production. An actual estimate would need compatible prices, product coverage, and supply-chain data rather than a country-wide average applied mechanically.

## Regional integration distributes production across borders

A North American production system can cross borders repeatedly before final sale. A component's value can appear in several gross trade flows as processing proceeds. Adding those flows overstates the final income generated by the chain. Value-added measures allocate income to the places where production occurs rather than count every border crossing as an independent contribution.

That distinction also changes the interpretation of bilateral trade. A final good exported from Mexico to the United States may embody inputs from the United States, Mexico, and other economies. The country shipping the final product is not necessarily the source of all its value. A bilateral gross trade balance cannot on its own describe the distribution of production income.

For firms, cross-border specialization can support scale, access to equipment, and a wider supplier base. It also creates dependencies on transport, documentation, and the continuity of particular inputs. The economic gain comes from the performance of the production system, not from maximizing the number of times an input changes location.

Trade agreement eligibility is a separate legal question. Rules of origin determine whether a product qualifies for specified treatment under the applicable agreement. They should not be equated with a national-accounts measure of domestic value added. A product can meet a regional content rule through inputs from more than one member economy, and the legal calculation may use conventions different from an input-output account.

## Domestic supplier development needs capabilities as well as demand

An expanding export platform creates an opportunity for local suppliers when they can meet quality, scale, cost, delivery, and certification requirements. Demand by a multinational buyer is valuable, but a supplier may need equipment, skills, finance, and process control before it can satisfy the contract. Supplier linkages therefore depend on a production capability, not merely geographic proximity.

The [OECD Economic Survey of Mexico 2024](https://www.oecd.org/content/dam/oecd/en/publications/reports/2024/02/oecd-economic-surveys-mexico-2024_da38dd2d/b8d974db-en.pdf), in its discussion of value chains and connectivity, identifies supplier linkages and logistics as areas relevant to Mexico's investment opportunity. That diagnosis is useful as structural context; it is not evidence that every announced supplier program has produced additional domestic value.

Support can be evaluated by following supplier entry, contract retention, productivity, and diversification of customers. A temporary contract awarded with assistance is an output. Sustained sales on competitive terms provide stronger evidence of a durable capability. Suppliers should also be assessed for dependence on a single buyer and the working capital needed to manage its payment schedule.

A local-content target can increase measured local procurement without ensuring an efficient production arrangement. If the mandated input is more expensive or unreliable, it can weaken the exporter's competitiveness and reduce total demand. The policy appraisal should compare the expected learning and linkage benefits with those costs, including the possibility that some support reaches production that would have occurred anyway.

## Employment and ownership answer different questions

Domestic value added includes compensation, operating surplus, and other income generated by production under the relevant accounting framework. It is not identical to income retained by Mexican households. Ownership affects the allocation of profits, while employment conditions affect how compensation reaches workers. Production location and income ownership must be distinguished.

A foreign-owned plant can create resident production, jobs, tax revenue, and demand for local services. Some profits may accrue to foreign owners. A domestically owned exporter can rely heavily on imported inputs. Neither ownership category alone establishes the depth of domestic production linkages.

Employment quality also requires its own evidence. The number of manufacturing jobs does not indicate real earnings, training, hours, safety, or advancement. Higher output per worker can support higher pay, but the distribution depends on labor-market and contractual arrangements. An assessment should examine those outcomes rather than infer them from export growth.

Regional concentration matters as well. Benefits can cluster around established manufacturing centers, while other regions face weaker connectivity or workforce constraints. A national export total may therefore coexist with sharply different local investment conditions. Supplier and labor evidence should be geographically matched to the production corridor under examination.

## Capacity and the scale of the opportunity

An export order also needs to be distinguished from installed capacity and from actual utilization. A new factory can increase potential output before orders reach the volume assumed in its business case. An existing plant can raise shipments by using spare capacity, with little immediate construction investment. The associated imports of machinery and components occur on different schedules.

This matters when an investment announcement is used to project national exports. The assessment should identify committed capital expenditure, commissioning, customer qualification, and realized shipments separately. Multiplying announced capacity by an assumed selling price produces a scenario, not an observed trade flow or a forecast validated by customs data.

A North American supplier's commercial resilience also depends on its customer mix. A Mexican plant serving one assembly program can face a sharp disruption when that model changes even if regional vehicle demand is stable. Repeat orders across several customers provide stronger evidence of transferable capabilities than an increase in sales tied to one product launch. Supplier concentration should therefore accompany the aggregate export and local-content evidence.

## Indicators for a production-based assessment

| Indicator | What it describes | Main qualification |
|---|---|---|
| Gross manufacturing exports | Border value and external sales | Includes imported content |
| Direct manufacturing value added | Income generated at the manufacturing stage | Excludes value created by other domestic suppliers |
| Domestic intermediate purchases | Procurement links within Mexico | Can contain upstream imported inputs |
| Full domestic value added embodied in trade | Resident income along the traced chain | Depends on input-output coverage and assumptions |
| Supplier productivity and contract continuity | Capability supporting durable linkages | Requires firm-level evidence over time |

The indicators should be compared within a common vintage and classification. Current-price increases need to be distinguished from greater production volume. Exchange-rate conversion can alter dollar totals without the same change in physical output. Input-output estimates often arrive with a lag and should not be described as real-time measurements of a newly opened factory.

Mexico's North American role is consequential because it combines manufacturing operations with cross-border specialization. Its domestic economic return depends on the value generated at those operations and throughout the resident supplier network. Export growth establishes expansion in external sales; the depth and durability of domestic production require a more detailed account.


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American Economic Senate