India-Mexico Preferential Trade Agreement Explained: Terms of Reference Signed on 28 October 2026, Tariffs, Exports and What Comes Next
Key Takeaways
- On 28 October 2026, India and Mexico signed the Terms of Reference formally launching Preferential Trade Agreement negotiations.
- The trigger is Mexico's tariff rise of up to 50 per cent on more than 1,400 products from countries without a trade deal, including India.
- Bilateral merchandise trade was about USD 7.83 billion in 2025-26, with Indian exports of about USD 5.73 billion led by automobiles at about USD 1.92 billion.
- The talks will cover market access, rules of origin, customs procedures, trade facilitation and trade remedies; no tariff cut applies until a deal is signed.
- A Mexican business mission to India in early 2027 is planned alongside the negotiations, which follow the Modi-Sheinbaum understanding of June 2025.
What happened
On 28 October 2026, India and Mexico formally launched negotiations for a Preferential Trade Agreement (PTA), signing the Terms of Reference (ToR) that will frame the talks. The signing took place during Commerce Secretary Rajesh Agrawal's two-day visit to Mexico City, and was reported by Bloomberg Law on the basis of a statement from India's Trade Ministry, and by The Hindu BusinessLine and the news agency IANS. Agrawal signed the document with Mexico's Undersecretary of Foreign Trade, Luis Rosendo Gutierrez Romano.
The ToR is not itself a trade deal. It is the framework document that formally starts negotiations: it sets out the scope, structure and objectives of the talks, and the areas the two sides will negotiate over. Detailed rounds of bargaining over individual products and tariff lines will follow. That distinction matters, because no tariff cut takes effect until an actual agreement is negotiated, signed and brought into force. What happened on 28 October was the starting gun, not the finish line.
The launch follows an understanding reached between Prime Minister Narendra Modi and Mexican President Claudia Sheinbaum on the sidelines of the G7 Summit in Canada in June 2025. Agrawal's visit turned that political understanding into a formal negotiating process, alongside meetings with the Mexican government and with Indian and Mexican business leaders convened by the Embassy of India in Mexico and the Indmex Council.
Why now: Mexico's tariff wall
The immediate trigger is a sharp rise in Mexican import duties. According to The Hindu BusinessLine, Mexico raised tariffs of up to 50 per cent on more than 1,400 products imported from countries with which it has no trade agreement, including India, with effect from 1 January 2026. The increases cover 1,463 tariff classifications, with duties ranging from 5 per cent to 50 per cent.
Several of India's most important export sectors to Mexico are in the firing line. The reports list automobiles and auto components, textiles and apparel, footwear, plastics, steel, chemicals, household appliances, aluminium, toys and engineering goods. Passenger vehicle duties, for example, have risen to as high as 50 per cent, a serious problem for Indian carmakers that treat Mexico as an important export market.
A Preferential Trade Agreement is designed precisely for this situation. Unlike a full free trade agreement, a PTA covers a limited range of goods, offering reduced duties on selected products rather than sweeping liberalisation across the whole economy. For India, the aim is to secure preferential market access for its exporters in Mexico before the higher tariff regime diverts trade to competitors that already enjoy preferential terms. Commerce and Industry Minister Piyush Goyal has also indicated that Mexico is interested in an early agreement on selected goods, which could bring tariff relief sooner than a broader deal would.
The trade relationship in numbers
Bilateral merchandise trade between India and Mexico stood at about USD 7.83 billion in 2025-26, down from USD 8.62 billion in the previous financial year, a decline of about 9.11 per cent. India exported goods worth about USD 5.73 billion to Mexico, while imports from Mexico were about USD 2.11 billion, leaving India with a substantial goods surplus.
Automobiles are by far the single largest Indian export to Mexico, accounting for about USD 1.92 billion of the USD 5.73 billion total in 2025-26, roughly a third of all Indian shipments. That is why the car industry has the most at stake in these talks: a 50 per cent duty on passenger vehicles can quickly price Indian cars out of a market where they previously competed. Engineering goods also account for a substantial share of India's shipments, and textiles, chemicals, plastics and footwear all feature in the affected list.
The fall in total trade, even as Indian exports held up relatively well, is part of the case for fresh momentum. Both governments have described the relationship as having large untapped potential. Agrawal pointed to India's growth rate of around 7 per cent and to what he called the strong complementarities between the two economies, while stressing policy stability, predictability and a rules-based trading environment as the basis for deeper partnership.
What the negotiations will cover
According to the Trade Ministry statement reported by Bloomberg Law, the agreement's key negotiating areas include market access for goods, rules of origin, customs procedures, trade facilitation and trade remedies. Areas of cooperation named in the statement include automotive, chemicals, energy, critical minerals, medical devices and advanced manufacturing.
Each of those terms carries real weight for exporters. Market access decides which products get lower duties and by how much. Rules of origin decide whether a product genuinely counts as Indian or Mexican, and therefore qualifies for the preferential rate, rather than being routed through a third country. Customs procedures and trade facilitation decide how quickly goods actually cross borders, which can matter as much as the duty rate itself. Trade remedies cover the safeguards and anti-dumping tools each side keeps if imports surge unfairly. Separately, summaries of the ToR also list dispute settlement, sanitary and phytosanitary (SPS) measures covering human, animal and plant health, and technical barriers to trade (TBT) covering product standards and regulations.
Alongside the negotiations, the two sides discussed a Mexican business mission to India in the first quarter of 2027, a business-to-business step intended to convert the negotiating framework into actual commercial contacts.
Background: a relationship older than the tariff dispute
India and Mexico have a long diplomatic history, and that history helps explain why both sides moved relatively quickly once the tariff problem arose. Mexico was the first Latin American country to establish diplomatic relations with independent India, in 1950. In the 1960s, Mexican wheat varieties, especially Sonora wheat, were used in Indo-Mexican hybrids that became a backbone of India's Green Revolution, a link that still features in accounts of the relationship.
The two countries have cooperated for decades in the United Nations and in developing-country groupings, and they have built institutional channels for trade: the fifth meeting of the India-Mexico Bilateral High Level Group on Trade, Investment and Cooperation was held in October 2020, co-chaired by India's Commerce Secretary and Mexico's Vice Minister for Foreign Trade, and the India-Mexico Trade and Commerce Council (INDMEX) was launched in December 2022. Prime Minister Modi visited Mexico in June 2016, when the two sides issued a joint statement. In February 2026, a government note on India's expanding trade negotiation agenda listed Mexico alongside ASEAN and Canada. The PTA launch is therefore best read as the latest step in an established relationship, accelerated by a new tariff shock, rather than a partnership invented from scratch.
What it means for India
For Indian exporters, the PTA talks are defensive as much as they are ambitious. The first prize is protection: preferential rates that restore competitiveness in a market where duties have jumped to as high as 50 per cent. Cars and auto components, textiles, engineering goods and chemicals stand to gain most if they are included in the early stages, and an early-harvest style arrangement on selected goods could deliver relief before a full agreement is concluded.
For India more broadly, the talks fit a wider pattern of trade diversification. In recent weeks India has accelerated trade talks with Mexico and Canada, as economies hit by tariff changes look for new partners and new markets. A deal with Mexico would also give India a stronger foothold in Latin America, a region where its commercial presence has historically been smaller than in Asia, Europe or North America.
There are limits to what should be claimed at this stage. No product list for tariff concessions has been announced, and no timetable for concluding the agreement has been published. A PTA covers a limited range of goods by design, so even a successful negotiation will not remove every duty Indian exporters face in Mexico. And the negotiations themselves will test how far each side is willing to open sensitive sectors: Mexico will want access for its own exporters, including in areas such as energy and critical minerals, while India will want to protect domestic producers where imports could hurt.
What to watch next
The first thing to watch is the negotiating calendar: when the first full round takes place, and whether the early-harvest idea for selected goods moves from ministerial suggestion to a concrete list. The second is the product coverage: whether automobiles, the largest export category, are at the front of the queue, and which other sectors make the first cut. The third is the proposed Mexican business mission to India in early 2027, which will show whether companies on both sides see real deals behind the diplomacy. The fourth is how the talks interact with Mexico's tariff regime itself: whether duties ease for PTA partners as negotiations progress, or only once an agreement is in force.
For students of trade policy and for exporters alike, the India-Mexico PTA is also a useful case study in what a preferential agreement is and is not. It is narrower than a free trade agreement, it starts with a Terms of Reference rather than a signed deal, and its value will be decided not by the ceremony in Mexico City but by the tariff lines, rules of origin and customs procedures that emerge from the rounds that follow.
Conclusion
The signing of the Terms of Reference on 28 October 2026 puts India-Mexico trade negotiations on a formal footing at a moment when the stakes are unusually clear. Bilateral trade of about USD 7.83 billion is under pressure from Mexican duties of up to 50 per cent on more than 1,400 products, and Indian exports worth USD 5.73 billion, led by automobiles, are directly exposed. The PTA offers a route to preferential access, but only if the rounds that follow produce commercially meaningful concessions on the products that matter. The launch is a genuine step forward for a relationship that stretches back to 1950 and to the Green Revolution, and the test now is whether negotiators can turn a framework document into lower duties, faster customs clearance and more trade across the Pacific.