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Operate in Mexico with structure,
control and institutional certainty.

Operate in Mexico with structure, control and institutional certainty.

Blexium is a fiscal, accounting, and regulatory advisory firm specialized in mining operations and Canada-Mexico cross-border structures.

We support our clients from company formation, through daily accounting and tax compliance, to international audits and advanced regulations.

At Blexium, tax is not reaction, it is structure.

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Our Team

Brayan Erubey Vargas Trevizo, Senior Accountant at our firm. A 2023 graduate with a Bachelor’s Degree in Accounting from the Universidad Estatal de Sonora, Brayan . . .

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Jorge Cárdenas, the CEO and Managing Partner of our firm. A distinguished professional with a long-standing commitment to academic and technical excellence, Jorge . . . 

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Moises Jimenez, our Senior Tax Accountant at Blexium. Moises holds a Bachelor’s Degree in Public Accounting from the Universidad de Sonora (2016) and a Master’s . . .

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Osiris Cárdenas, our Administrative Manager at Blexium. With a unique multidisciplinary background as a Geosciences Engineer, Osiris provides an invaluable . . .

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The BLEXIUM Method

A firm built on structure, not improvisation.

BLEXIUM is not just a name. It is the methodology that governs how we structure companies, mining concessions and cross-border operations.

B

- Balance

Fiscal equilibrium as the foundation of control.
Every solid fiscal structure begins with balance: between income and deductions, risk and compliance, growth and protection.
Balance ensures that financial decisions are sustainable, defensible and aligned with regulatory reality.

L

- Ledger

Order, traceability and audit-ready accounting.
We build accounting systems designed for clarity, review and inspection.
Ledger represents structured records, verifiable transactions and accounting discipline that withstands audits and institutional scrutiny.

E

- Equity

Capital protection, fiscal fairness and asset efficiency.
Equity ensures that corporate value is protected, fiscal exposure is fairly managed and assets are structured efficiently for long-term operations.

X

- eXpertise

Advanced judgment for complex and regulated scenarios.
Mining operations and cross-border structures require specialized fiscal judgment.
Expertise is applied where standard solutions fail.

I

- Intelligence

Anticipation of fiscal and regulatory risk. We do not wait for issues to arise.
We anticipate changes in regulation, audits and exposure before they become problems.

U

- Umbrella

Preventive compliance and regulatory protection.
Umbrella represents layered compliance: fiscal, legal, labor and regulatory, providing protection against unexpected inspections or disputes.

M

- Management

Continuous fiscal governance and institutional control.
Fiscal control is not a one-time setup.
It is an ongoing governance process that requires monitoring, reporting and strategic oversight.

Is where corporate structure becomes fiscal control

Explore Our Methodology

Company Formation
& Corporate Structuring

What this service is:

We design and execute the complete legal and fiscal structure required to operate formally and securely in Mexico, aligned with Blexium’s principles of Balance, Equity and Management.

Includes:

  • Entity name registration with the Ministry of Economy
  • Drafting and execution of Articles of Incorporation before a Notary Public
  • Registration with the Federal Taxpayer Registry (RFC)
  • Obtaining the company’s Advanced Digital Signature (e.firma)
  • Bank account setup
    • Individual or joint accounts
    • Controlled operational structures when required

Companies correctly structured from day one, minimizing future fiscal and legal risk.

Structure Your Company

Accounting & Tax Compliance

What this service is:

Comprehensive accounting and tax management, structured by company, project or mining concession, fully aligned with the Ledger and Intelligence principles.

Includes:

  • Design of accounting and tax charts of accounts in Contpaq
  • Project-based accounting catalogs
  • Electronic invoicing (CFDI)
  • Budget design and control per project or concession
  • Monthly review of supplier XML files
  • Accounting capture and reconciliation

Monthly financial statements:

  • Profit & Loss
  • Balance Sheet
  • General Ledger and journal entries

Monthly electronic accounting filings:

  • Trial balance
  • Chart of accounts

Review and calculation of federal taxes:

  • VAT
  • Income Tax
  • VAT and Income Tax withholdings
  • Employment subsidies

Monthly informative filings:

  • DIOT
  • DIM

Annual obligations:

  • Annual Corporate Income Tax return
  • Fixed asset depreciation
  • Amortization of prepaid insurance

Financial clarity, traceability and continuous fiscal compliance.

Ensure Continuous Compliance

Mining Tax &
Regulatory Services

What this service is:

Specialized fiscal and regulatory advisory for Mexican mining operations and concessions, applying Expertise, Intelligence and Umbrella principles.

Includes:

  • Mining duties calculation per concession
  • Minimum investment reports (Proof of Assessment Works)
  • VAT and mining duties refund filings
  • Monitoring of private contracts related to mining concession transfers
  • Legal status review of mining concessions
  • Contract status verification

Mining operations fully aligned with fiscal and regulatory requirements.

Secure Your Mining Compliance

Legal Representation
& Fiscal Domicile

What this service is:

Institutional legal presence and representation in Mexico, supporting Umbrella and Management continuity.

Includes:

  • Legal representation before Mexican authorities as designated by management
  • Registered fiscal domicile in Hermosillo, Sonora, Mexico

Formal legal presence and institutional continuity

Establish Legal Presence

Canadian Audit Support

What this service is:

Structured support for Canadian and international audit processes, aligned with Ledger, Expertise and Intelligence.

Includes:

  • Bank balance confirmations
  • Accounts payable and receivable confirmations
  • Legal confirmations
  • Mining concession legal status verification
  • Contract reviews
  • Audit sample preparation

Audit-ready documentation aligned with international standards

Prepare for Audit

Payroll & Labor Compliance

What this service is:

Complete payroll processing and labor compliance under Mexican regulations, structured for traceability and institutional control.

Includes:

  • Payroll calculation and review
  • Payroll management in Excel or accounting systems
  • Electronic payroll receipt stamping (Contpaq Nóminas)
  • Monthly IMSS (SIPARE) filings
  • INFONAVIT and retirement contributions
  • SUA management
  • State payroll tax calculation
  • Employment contract drafting

Labor, tax and social security compliance with full traceability

Manage Payroll Correctly

Structure delivers results

Representative Case Scenarios:

Canadian mining company operating multiple concessions in Mexico with full fiscal compliance and audit support.

Project-based mining operation that regained financial control through structured accounting and tax systems.

Cross-border corporate group that reduced regulatory exposure through preventive fiscal structuring.

Client Testimonials:

Blexium gave us clarity, structure and confidence to operate in Mexico.

CFO, Canadian Mining Company

Their methodology goes far beyond compliance.

Director of Operations

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Start operating in Mexico with clarity and control

Tell us about your operation. A Senior advisor will review your case and contact you with a clear next step.

Contact Us

No obligation. No sales pressure.

Brayan Erubey Vargas Trevizo, Senior Accountant at our firm. A 2023 graduate with a Bachelor’s Degree in Accounting from the Universidad Estatal de Sonora, Brayan brings a dynamic and highly specialized perspective to our consulting team. Having been recognized as «Distinguished Student» by the IMCP in 2022 and 2023, he possesses extensive experience in the mining sector, where he stands out for his expertise in managing VAT refunds for exploration companies and ensuring compliance with mining rights and tax obligations. His professional background is complemented by his role as a university professor and his leadership as a former regional board member for the IMCP, guaranteeing our clients service based on constant technical updates, advanced accounting software proficiency, and an unwavering commitment to administrative excellence.

Jorge Cárdenas, the CEO and Managing Partner of our firm. A distinguished professional with a long-standing commitment to academic and technical excellence, Jorge earned his Bachelor’s Degree in Public Accounting from the IPN in 2011 and his Master’s Degree in Administration in 2016. He is currently advancing his expertise as a PhD candidate in Administrative and Economic Sciences at the Universidad de Sonora. With over 15 years of professional experience, Jorge specializes in high-level fiscal strategy, mining taxation, and corporate governance.

His leadership at JCR Ario is further enriched by more than 10 years of experience as a professor at prestigious public institutions, including the Universidad de Sonora (UNISON) and the Universidad Estatal de Sonora (UES), where he has taught subjects ranging from basic accounting to specialized mining taxes. This academic background defines his rigorous approach to financial compliance and deep understanding of the legal frameworks governing the mining and industrial sectors, ensuring our clients receive world-class consultancy and strategic results.

Moises Jimenez, our Senior Tax Accountant at Blexium. Moises holds a Bachelor’s Degree in Public Accounting from the Universidad de Sonora (2016) and a Master’s Degree in Management of Organizations (2019). With a career marked by technical precision, he specializes in federal and state tax strategy, monthly financial reporting, and the complex management of VAT refunds and mining rights. His background as an Administrative Director and IT consultant allows him to implement high-quality standards through technology-driven processes. At JCR Ario, Moises ensures our clients achieve financial peace of mind through rigorous tax compliance, expert payroll management, and timely financial advice for strategic decision-making.

Osiris Cárdenas, our Administrative Manager at Blexium. With a unique multidisciplinary background as a Geosciences Engineer, Osiris provides an invaluable bridge between technical field operations and corporate administration. He oversees the firm’s internal management, including accounts receivable, collections, and vendor payments, ensuring seamless financial operations for our clients. Furthermore, he specializes in tax compliance and accounting for individuals, delivering precise fiscal guidance. His expertise in geosciences grants him a distinctive perspective on the mineral exploration industry, allowing him to align complex administrative requirements with the practical realities of the mining field, providing our clients with truly integrated and specialized support.