The Official Announcement: New Tax Rules in 93 Days
On September 8, 2025, the Secretary of Finance and Public Credit delivered the Economic Package for Fiscal Year 2026 to the Chamber of Deputies. This proposal, which will take effect on January 1, 2026, introduces fundamental changes that will affect the operation and tax compliance of every Mexican company.
Unlike previous years, this package does not include the creation of new taxes, but it does propose significant adjustments to existing tax provisions that will directly impact the operating costs and obligations of SMEs.
Economic Framework 2026: The Context of the Changes
The main economic variables considered in the Economic Package project a scenario of economic moderation:
- Economic growth: between 1.8% and 2.8% (slightly lower than the 2025 range of 2.0% to 3.0%)
- Inflation: 3.0% (vs. 3.5% in 2025)
- Exchange rate: 18.9 pesos per dollar (vs. 18.5 in 2025)
- Interest rate: reduction from 8.0% in 2025 to 6.0% in 2026
For the coming year, tax payments will make their largest contribution in history to public-sector revenue. The Ministry of Finance estimates that tax collection will contribute more than 67.3% of total public revenue—the highest proportion on record.
Change 1: Expanded Regularization Program - A Historic Opportunity
The Benefit: 100% Forgiveness for Mid-Sized Companies
The program expands significantly in coverage. Taxpayers with income up to 300 million pesos (2024): 100% forgiveness of fines, surcharges and enforcement costs related to final tax liabilities, provided they regularize their status before October 31, 2026.
Comparison with 2025: A Notable Expansion
- 2025: Up to 35 million pesos in income
- 2026: Up to 300 million pesos in income
- Benefit: The same 100% discount on fines and surcharges
- Deadline: October 31, 2026
Impact for SMEs
This expansion allows mid-sized companies, previously excluded, to regularize significant tax debts with full discounts on penalties.
Change 2: Significant Increase in Late-Payment Surcharges
40% Increase in Surcharge Rates
The Federal Revenue Law Initiative for fiscal year 2026 proposes setting the surcharge rate applicable to the payment of tax liabilities at 1.38 percent monthly on outstanding balances, higher than the 0.98 percent rate approved for 2025.
Financial Impact on Deferred Payments
- Payments up to 12 months: 1.42% monthly (vs 1.26% in 2025)
- Payments 12-24 months: 1.63% monthly (vs 1.53% in 2025)
- Payments over 24 months: 1.97% monthly
Calculating the Real Cost
“The annualized surcharge rate results in a very expensive compound rate, which is why tax debts grow very sharply over time, making it disadvantageous to carry tax debts,” according to specialized analysis.
Practical example: A debt of $100,000 at the new rate of 1.38% monthly:
- Annual cost: 16.56% (vs 11.76% with the 2025 rate)
- Cost increase: 41% higher
Change 3: Strict Control of Fake CFDIs
New Definition of Valid Invoices
It is clarified that CFDIs must back existing, real transactions and authentic legal acts, so the recipient of fake invoices has the obligation to correct their tax status by filing amended returns.
Automatic Sanctions
Fake CFDIs: invoices must cover real transactions, otherwise they will be deemed nonexistent. In the event of noncompliance, the digital seal certificate will be restricted.
The Recipient’s Responsibility
For the first time, the responsibility of the recipient of fake invoices—not just the issuer—is clearly established, creating a system of shared tax responsibility.
Change 4: Real-Time Access for Digital Platforms
Advanced Technological Surveillance
Within the framework of the proposed reform to the CFF 2026, a new power is established for the Tax Administration Service (SAT) that allows it to require foreign digital platforms to provide online, real-time access to their tax information.
Forced Compliance Measures
In the event of noncompliance, the SAT may order the immediate blocking of the digital services offered by such platforms within national territory, which represents a significant change in tax control over the digital economy.
Impact on Companies That Use Platforms
Companies that operate through digital platforms (e-commerce, delivery services, streaming) will have to ensure that their platforms comply with these new requirements to avoid operational interruptions.
Change 5: Capital Repatriation Opportunity
15% Tax Benefit
A benefit is proposed that allows paying ISR at a rate of 15% on capital of lawful origin that returns to the country, with no deductions, provided the funds are invested in productive activities for at least three years.
Requirements and Deadlines
Return of capital: funds held abroad through September 8, 2025, may be repatriated by paying an ISR of 15% with no deductions, provided they are invested in Mexico for at least three years.
Eligible Activities
- Research, training, innovation and technology development
- “Plan México” projects and investments in Development Hubs (Polos de Desarrollo)
- Payment of federal liabilities and wages arising from subordinated services
- Food production, infrastructure, and manufacturing that generates jobs
Change 6: Restrictions in the Federal Taxpayer Registry
Preventive Control of Shell/Invoice-Mill Companies
The SAT will be able to deny RFC registrations if partners or representatives have been linked to invoice mills or companies with nonexistent transactions. Restriction of the digital seal for taxpayers with unpaid final tax liabilities, or when their CFDIs exceed four times the historical amount of the liability.
Impact on New Businesses
This measure will affect the incorporation of new companies whose partners or representatives have had ties to sanctioned companies, creating a “tax history” that impacts future business activities.
Change 7: Increases in Specific Taxes
Products with High Social Impact
Flavored Beverages: It is proposed to increase the duty to 3.0818 pesos per liter of product for flavored beverages, including those containing any type of non-caloric sugars (sweeteners). Flavored beverages: increase from $1.6451 to $3.0818 per liter (+87%).
Tobacco Products:
- Manufactured tobacco: increase in the rate from 160% to 200%
- Hand-rolled cigars: increase from 30.4% to 32%
- Cigarettes: specific duty rises from $0.8516 in 2026 to $1.1584 in 2030
Video Games and Entertainment:
- Provision of digital video-game services with violent content: incorporation of an 8% ad valorem special tax
- Games with betting and raffles: from 30% to 50%, also applicable to those conducted over the internet
Obligations for Digital Platforms
Foreign digital platforms that facilitate taxable transactions must register with the RFC, designate a legal representative and tax domicile in Mexico, withhold 100% of the corresponding IEPS and report monthly to the SAT.
Change 8: Increase in Financial Withholding
80% Increase in Interest Withholding
The withholding rate on interest paid by the financial system is increased to 0.90% for fiscal year 2026 (in 2025 it was 0.50%).
New Withholding by Sector
FinTech Sector: Obligation to withhold and remit ISR and IVA for the transactions in which they participate as intermediaries.
Digital Services:
- 20.0% for individuals who do not provide an RFC
- 8% IVA for legal entities with an RFC, 16% without an RFC
- 16% IVA for foreign residents without an establishment in Mexico
Implementation Timeline: Critical Dates
September 2025 - December 2025: Preparation
- September: Analysis of the impact on your specific company
- October: Updating of internal systems and processes
- November: Training of the accounting and administrative team
- December: Verification of compliance with the new requirements
January 2026 - October 2026: Implementation and Opportunities
- January 1, 2026: All provisions take effect
- October 31, 2026: Deadline for the expanded regularization program
- Continuous monitoring: Adaptation to new interpretations and clarifications
Impact Analysis by Type of Company
Professional Services Companies
Opportunities:
- Tax regularization with discounts through October 2026
- Possible capital-repatriation benefit if applicable
Risks:
- Higher cost from surcharges in case of delays (40% more expensive)
- Strict review of real transactions in CFDIs
Commerce and Distribution
Direct Impacts:
- Strict control of CFDIs to validate real transactions
- Possible restrictions if partners’ history is questionable
- Increase in financial costs due to higher surcharges
Recommendations:
- Internal audit of all tax invoices
- Verification of the history of partners and representatives
- Immediate regularization of debts to avoid high surcharges
Companies with Digital Operations
Critical Changes:
- Digital platforms will require real-time access for the SAT
- New withholding and tax obligations
- Risk of blocking if platforms do not comply
Preparation Needed:
- Coordination with platforms for compliance
- Updating of contracts and terms of service
- Backup of operations in case of interruptions
Manufacturing and Production
Potential Benefits:
- Capital-repatriation opportunities with the preferential 15% rate
- Regularization program for historical debts
Considerations:
- Thorough validation of the supply chain for real CFDIs
- Investment planning to take advantage of repatriation
Strategic Preparation: Immediate Action Plan
Risk Assessment (October 2025)
Internal Tax Audit:
- Review of all tax debts to evaluate the regularization benefit
- Analysis of the actual validity of transactions in CFDIs issued and received
- Verification of the tax history of partners and legal representatives
- Evaluation of dependence on foreign digital platforms
Opportunity Analysis:
- Quantification of potential savings with the regularization program
- Evaluation of eligibility for capital repatriation
- Identification of tax benefits retained for 2026
Implementation of Controls (November 2025)
Systems and Processes:
- Updating of procedures to validate real transactions before issuing CFDIs
- Implementation of additional controls for invoice reception
- Establishment of automatic alerts to avoid surcharges for delays
- Robust documentation of all business transactions
Team Training:
- Updating accounting staff on the new requirements
- Awareness of responsibilities regarding fake CFDIs
- Protocols for handling affected digital platforms
Execution and Monitoring (December 2025 - 2026)
Immediate Actions:
- Filing of tax regularization applications (before October 2026)
- Implementation of real-time systems for digital platforms
- Adjustment of internal processes to the new definitions of valid CFDIs
- Establishment of advance-payment schemes to avoid surcharges
Cost Considerations: Investment vs Risks
The Cost of Not Adapting
Increased Surcharges:
- 40% more expensive to defer tax payments
- Exponential accumulation of debts
- Operational restrictions from blocked digital seals
Sanctions for Fake CFDIs:
- Loss of the digital seal certificate
- Obligation to file amended returns
- Possible audits and thorough reviews
Operational Interruptions:
- Blocking of non-compliant digital platforms
- Restrictions on incorporating new companies
- Limitations on deductions from invalid invoices
Benefits of Proactive Preparation
Immediate Savings:
- Up to 100% discount on fines and surcharges (regularization program)
- 15% vs 30% ISR on capital repatriation
- Operational continuity without interruptions
Competitive Advantages:
- Systems ready for the new auditing regime
- Strengthened relationship with tax authorities
- Processes optimized for automatic compliance
Specific Risks by Sector
High Risk: E-Commerce
Companies that depend on foreign digital platforms face the greatest risk of operational interruption if their platforms do not implement real-time access for the SAT.
Medium Risk: Professional Services
The new strict definition of real transactions may affect intangible services where supporting documentation is less evident.
Low Risk: Manufacturing with Robust Documentation
Companies with well-documented processes and transparent supply chains have lower exposure to new restrictions.
Modernization Opportunities
Compliance Automation
The new requirements create opportunities to implement automated systems that:
- Validate real transactions before generating CFDIs
- Monitor due dates to avoid increased surcharges
- Automatically document all transactions
- Integrate tax information in real time
Strategic Tax Optimization
- Taking advantage of the regularization program before October 2026
- Evaluation of capital-repatriation opportunities
- Operational restructuring to maximize retained benefits
Final Message: The Window of Opportunity
The 2026 Economic Package doesn’t just bring restrictions; it offers a historic window for tax regularization not seen in a decade. However, this opportunity has strict deadlines and requires immediate preparation.
Companies that act proactively over the next 90 days will have significant advantages:
- Substantial savings on tax regularization
- Systems ready for the new auditing regime
- Guaranteed operational continuity
- Superior competitive positioning
The time to prepare is now. Implementation begins in 93 days.
Position Yourself Strategically for 2026
The changes in the 2026 Economic Package require accounting systems that adapt automatically to new regulations and provide the robust documentation the authorities will demand.
Tablia automates 2026 compliance:
- Automatic validation of real transactions in CFDIs
- Preventive alerts to avoid increased surcharges
- Complete documentation for audits
- Integration with new digital-platform requirements
- Automatic identification of regularization opportunities
Early preparation available - app.tablia.ai/sign-up
The 2026 Economic Package changes the rules of the game.
Will your company be ready?
Official Sources and Legal Documentation
Official Government Documents:
- Economic Package 2026 - Secretaría de Hacienda y Crédito Público
- 2026 Revenue Law Initiative - Centro de Estudios de las Finanzas Públicas
- General Economic Policy Criteria 2026 - SHCP
Specialized Analysis:
- PwC Mexico - 2026 Tax Reform - Detailed professional analysis
- Deloitte Mexico - Specialized interpretation
- Baker McKenzie - International legal perspective
Sources for Ongoing Updates:
- Diario Oficial de la Federación: Updated official publications
- SAT Portal: Official interpretations and clarifications
- Cámara de Diputados: Tracking of the legislative process
- Business associations: COPARMEX, CANACINTRA, CCE
Specialized Consultation Channels:
- Certified tax consultants: Personalized interpretation
- Specialized firms: Specific sector analysis
- Official webinars: Updates from tax authorities
- Specialized publications: IDC, Fiscalía, Tax ID
