By Penny Langford
**MEXICO CITY , ** The long-simmering fiscal tension between First Majestic Silver Corp and the Mexican government has escalated into a high-level diplomatic affair. In a move that signals a breakdown in direct corporate-to-government negotiations, First Majestic CEO Keith Neumeyer has formally requested the intervention of the Canadian ambassador to Mexico to help resolve a $209.2 million tax dispute with the Servicio de Administración Tributaria (SAT).
The request follows what Neumeyer characterizes as a persistent refusal by Mexican authorities to engage with reasonable compromise. Since 2018, the Vancouver-based silver producer has submitted three separate settlement proposals to the SAT, all of which were reportedly rebuffed without a counter-offer that the company deemed viable. As the standoff enters its eighth year of active friction, the involvement of Canada’s top diplomat in Mexico City marks a pivotal shift from legal maneuvering to geopolitical pressure.
A Legacy of Transfer Pricing Friction
At the heart of the $209.2 million claim is a complex disagreement over transfer pricing at the San Dimas mine. The dispute traces back to an Advance Pricing Agreement (APA) established in 2012, which allowed the mine’s previous owners to sell silver at fixed prices significantly below the prevailing spot market. While First Majestic maintains that it has operated within the legal framework inherited during its 2018 acquisition of Primero Mining, the SAT has aggressively moved to retroactively nullify those agreements.
For Neumeyer, the issue is as much about legal certainty as it is about the specific dollar amount. "We have tried to be a partner in these discussions," Neumeyer noted in a recent briefing. "But when three distinct, good-faith proposals are dismissed without a path forward, it becomes clear that a different level of dialogue is required."
The Diplomatic Gambit: Why Now?
The decision to pull the Canadian ambassador into the "fray" suggests that First Majestic sees the current Mexican regulatory environment as increasingly difficult for foreign investors. In 2026, the mining sector in Mexico remains under intense scrutiny, with recent legislative changes affecting concessions and environmental requirements.
The Canadian government has historically been protective of its mining interests in Latin America, which represent a significant portion of Canada’s outbound foreign direct investment. By involving the ambassador, First Majestic is effectively testing the strength of the Canada-United Kingdom-Mexico trade protections (and the remnants of the CUSMA framework) in a post-2024 political landscape.
Industry analysts suggest that the SAT’s hardline stance against First Majestic could serve as a bellwether for other Canadian miners operating in the region, including Pan American Silver and Gatos Silver. If a major producer like First Majestic cannot reach a settlement after nearly a decade of trying, the "Mexico risk" premium for mining stocks may continue to rise.
Comparative Tax Disputes in the Mining Sector (2026 Estimates)
| Company | Jurisdiction | Disputed Amount (USD) | Status |
|---|---|---|---|
| First Majestic Silver | Mexico | $209.2 Million | Diplomatic Escalation |
| Barrick Gold | various | $140 Million | In Arbitration |
| Freeport-McMoRan | Indonesia | $185 Million | Settlement Pending |
| Anglo American | Chile | $210 Million | Court Appeal |
Data compiled by Skillings Mining Intelligence.
Operational Resilience Amidst Legal Uncertainty
Despite the tax overhang, First Majestic continues to push forward with operational improvements. The company's focus remains on its primary Mexican assets, even as it navigates the complexities of the 2026 lithium price forecast and broader critical minerals strategies.
The San Dimas mine, located in the state of Durango, remains the crown jewel of the company’s portfolio. However, the $209.2 million liability represents a significant portion of the company’s free cash flow, potentially impacting future capital expenditure for exploration and mill automation.
The Path to 2027: Arbitration or Accord?
If the Canadian ambassador's intervention fails to bring the SAT back to the negotiating table, the next logical step remains international arbitration. First Majestic has previously initiated proceedings under the International Centre for Settlement of Investment Disputes (ICSID), citing breaches of fair and equitable treatment.
However, arbitration is a multi-year process that often satisfies neither the tax authority nor the corporation's shareholders. For now, the mining industry is watching Mexico City closely. The resolution: or further escalation: of the First Majestic standoff will provide a definitive answer on whether Mexico remains a destination for "certainty-seeking" capital or a jurisdiction defined by retroactive fiscal risk.
"The goal is not to avoid taxes," a company representative stated. "The goal is to pay what is fair under the laws that existed when the investments were made. That is the basis of any functioning mining jurisdiction."
Social Media Snippet (LinkedIn/X):
Diplomatic escalation in Mexico: First Majestic Silver CEO Keith Neumeyer has called on the Canadian ambassador to intervene in a $209.2M tax dispute with the SAT. After 3 rebuffed settlement proposals since 2018, the standoff is testing the limits of North American trade protections. Is Mexico's "mining risk" reaching a breaking point for foreign investors? Read the full analysis at Skillings. #MiningNews #FirstMajestic #MexicoMining #SilverMining #TaxDispute
Frequently Asked Questions
What is the primary cause of the First Majestic tax dispute?
The dispute centers on transfer pricing at the San Dimas mine. The Mexican tax authority (SAT) is challenging a 2012 agreement (APA) that allowed the company to sell silver at fixed prices, claiming it resulted in underpaid taxes.
Why is the Canadian ambassador involved?
CEO Keith Neumeyer requested diplomatic intervention after First Majestic's three settlement proposals were rejected by the SAT since 2018. The move seeks to resolve the $209.2 million claim through higher-level government-to-government dialogue.
How does this affect First Majestic's operations?
While the dispute is a significant financial "overhang," it has not halted production at the San Dimas mine. However, the potential $209.2 million liability impacts the company's balance sheet and investor sentiment regarding jurisdictional risk in Mexico.
