On September 8, 2026, the Federal Executive submitted the 2027 Economic Package to the Congress of the Union. The package comprises the Federal Revenue Law Bill (Ley de Ingresos de la Federación, LIF), the Federal Expenditure Budget Bill (PPEF), the General Economic Policy Guidelines (CGPE), and several bills to amend the Income Tax Law (LISR) and the Federal Duties Law. Together, these documents outline the fiscal strategy for the coming fiscal year and anticipate measures that, if approved, will affect how Mexican companies determine, comply with, and are audited on their tax obligations.
When presenting the package, the Office of the President described it as a responsible proposal that safeguards social welfare, involves no new taxes and no fuel price hikes, and preserves existing tax incentives. In the same vein, the Ministry of Finance and Public Credit (SHCP) confirmed that the proposals do not contemplate structural changes to the general rates of Income Tax (ISR) or Value Added Tax (IVA).
That said, the package does introduce a significant set of measures aimed at strengthening tax collection, compliance, and enforcement. Below, we summarize the points we consider most relevant for our clients. It is important to keep in mind that these proposals are still subject to the legislative process before the Congress of the Union, so their final scope may change before eventual approval and publication in the Federal Official Gazette (Diario Oficial de la Federación).
Economic and Public Finance Outlook
The 2027 General Economic Policy Guidelines are based on the following macroeconomic projections:
- GDP growth of between 1.5% and 2.5%.
- Estimated inflation of 3.0% by year-end.
- Reference exchange rate of 18.0 pesos per US dollar.
- Nominal 28-day CETES interest rate of approximately 6.0%–6.1%.
- Average price of the Mexican crude oil basket of USD 61.8 per barrel.
Public Sector Borrowing Requirements (RFSP) are estimated at 3.9% of GDP for 2027, down from an estimated 4.1% at year-end 2026, reflecting the goal of continuing gradual fiscal consolidation. On the revenue side, the SHCP projects total budgetary revenue of approximately 10.64 trillion pesos, with tax revenue reaching a historic high of 15.9% of GDP (roughly 6.26 trillion pesos), representing real growth of 5.9% versus the estimated close of 2026. According to Finance Ministry’s own criteria, this increase would only be partially explained by expected economic growth, meaning a significant portion would depend on the effect of the proposed tax changes and stronger enforcement.
Key Proposed Changes to the Income Tax Law (LISR)
The proposed LISR reform is primarily aimed at combating tax evasion through adjustments to how companies determine their taxable base:
- Cap on authorized deductions: deductions would be limited to 96.67% of accruable income (or 99% of deductions, as applicable), effectively setting a minimum taxable-base floor.
- Tax loss carryforwards: prior-year losses could only be offset against up to 50% of the fiscal year’s taxable profit; any excess could be applied over the following 20 fiscal years.
- The effects of this reform would apply as early as January 2027, since the calculation of provisional payments would also be modified accordingly.
- Reduction of the net interest deduction limit from 30% to 20% of adjusted taxable profit.
- New conditions for deducting payments abroad and advance payments for services and leases.
- Repeal of the optional tax regime for corporate groups, together with payment of the deferred tax.
- Clarifications to the Contributed Capital Account (CUCA), the tax cost basis of shares, and the Net Tax Profit Account (CUFIN).
Federal Revenue Law (LIF) and Tax Incentives
Key incentives are preserved.
- Repatriation of capital: the preferential 7.5% ISR rate (instead of 15%) is maintained, subject to investment and in-country holding requirements of at least three years.
- Tax regularization program: would continue for taxpayers with annual income of up to 300 million pesos, offering a 100% reduction of fines, surcharges, and collection costs (or 90% in certain cases), through a single payment due no later than October 31, 2027.
- Merits-only revocation appeal (recurso de revocación exclusivo de fondo), without the need to secure the tax interest.
- Existing incentives for diesel, biodiesel, agricultural and forestry activities, transportation, production processes, and mining remain in place, as does the 50% toll-fee credit (although the income threshold to access this benefit would drop from 300 to 250 million pesos).
New Measures for Digital Platforms
The proposal would extend to legal entities the withholding scheme currently applicable to individuals operating through digital platforms: 2.5% ISR withholding on gross income (20% if no tax ID/RFC is provided), and IVA withholding of 50% or 100%, depending on whether the taxpayer’s registration is provided. The 100% IVA withholding would also extend to foreign residents selling goods within Mexican territory and to providers who receive payment into foreign bank accounts. In addition, platforms’ obligation to report all of their clients to the SAT would be broadened, even in cases where the platform has not processed the payment.
Financial Sector
- Reduction of the annual interest withholding rate from 0.90% to 0.68% of the principal generating the interest.
- Substantive restrictions remain in place for credit institutions, insurers (limits on IVA crediting when indemnities are paid through third parties), and IPAB (multiple banking institutions may only deduct one-fourth of their IPAB fees).
- New withholding obligations for crowdfunding institutions: 20% ISR on nominal interest paid and 16% IVA on the nominal value of accrued interest.
Federal Duties Law
The bill contemplates updated fees for government services and for the use of national assets, with notable impacts on sectors such as financial services, telecommunications, water, and maritime activities, along with new billable items arising from recent regulatory changes. The stated objective is to recover the actual cost of the services provided by the authorities, meaning that in several cases the adjustments would exceed inflation.
A Central Theme: Greater Tax Enforcement
Although the Federal Government has emphasized that the 2027 Economic Package creates no new taxes and does not raise existing rates, the General Economic Policy Guidelines themselves acknowledge that the projected growth in tax revenue (up to a historic high of 15.9% of GDP ) will depend heavily on stricter control, compliance, and enforcement mechanisms, as well as on combating tax evasion, tax avoidance, and companies that issue invoices for simulated transactions (EFOS).
Several private-sector organizations and analysts share this reading and anticipate a climate of greater scrutiny for taxpayers during 2027:
- The cap on deductions and loss carryforwards effectively functions as a minimum taxable-base floor for medium and large companies, narrowing their room for tax planning.
- The expanded withholding and reporting obligations for digital platforms are intended to close compliance gaps within the digital economy.
- Financial-sector analysts and business organizations have noted that, in the absence of a comprehensive tax reform, the tax authority is likely to rely on stricter enforcement measures and greater collection efficiency to meet its revenue targets.
For companies, this means that, even without changes to the general ISR and IVA rates, the risk of inquiries, information requests, and audit actions by the SAT will increase. It is advisable to prepare for this scenario by reviewing the company’s tax structure, the supporting documentation for deductions, transfer pricing, and compliance with formal obligations, ahead of the proposed provisions taking effect.
The 2027 Economic Package confirms a strategy of stability in general tax rates, combined with a substantial strengthening of the enforcement and compliance tools available to the tax authority. For companies, the challenge does not lie in new tax rates, but in an environment of greater evidentiary and formal compliance requirements, where properly supported deductions, sound loss-carryforward planning, compliance with digital platform obligations, and timely responses to authority requirements will be decisive.
At ST Stratego, with nearly two decades of experience in tax, customs, and foreign trade matters, and experience working with both the public and private sectors, we support our clients in reviewing and strengthening their tax and customs compliance, handling audit proceedings and legal defense, and consolidating their processes under ISO 9001–certified quality standards. Our multidisciplinary team is ready to assess the specific impact of these proposals on your operations and to work alongside you in designing the actions needed to get ahead of their eventual entry into force.
En ST Stratego, con casi dos décadas de experiencia en materia fiscal, aduanera y de comercio exterior, y experiencia en sector público y privado, acompañamos a nuestros clientes en la revisión y fortalecimiento de su cumplimiento fiscal y aduanero, la atención de procedimientos de fiscalización y defensa legal, y la consolidación de sus procesos bajo estándares de calidad certificados ISO 9001. Nuestro equipo multidisciplinario está listo para analizar el impacto específico de estas propuestas en su operación y diseñar, junto con usted, las acciones necesarias para anticiparse a su eventual entrada en vigor.
Legal Notice and Copyright

The content of this article is for informational and general information purposes only. It does not constitute a legal opinion, personalized advice, or specific tax advice. Consequently, ST STRATEGO assumes no liability arising from the interpretation or use of this document.
Reproduction of this publication in whole or in part, by any means or format, is strictly prohibited without prior, express, and written authorization from the author. Any unauthorized use will be punished in accordance with the Federal Copyright Law and other applicable provisions.
If you would like more information on the information presented here or to learn more about our legal, tax, and foreign trade solutions, please do not hesitate to contact us at info@stratego-st.com.
On September 8, 2026, the Federal Executive submitted the 2027 Economic Package to the Congress of the Union. The package comprises the Federal Revenue Law Bill (Ley de Ingresos de la Federación, LIF), the Federal Expenditure Budget Bill (PPEF), the General Economic Policy Guidelines (CGPE), and several bills to amend the Income Tax Law (LISR) and the Federal Duties Law. Together, these documents outline the fiscal strategy for the coming fiscal year and anticipate measures that, if approved, will affect how Mexican companies determine, comply with, and are audited on their tax obligations.
When presenting the package, the Office of the President described it as a responsible proposal that safeguards social welfare, involves no new taxes and no fuel price hikes, and preserves existing tax incentives. In the same vein, the Ministry of Finance and Public Credit (SHCP) confirmed that the proposals do not contemplate structural changes to the general rates of Income Tax (ISR) or Value Added Tax (IVA).
That said, the package does introduce a significant set of measures aimed at strengthening tax collection, compliance, and enforcement. Below, we summarize the points we consider most relevant for our clients. It is important to keep in mind that these proposals are still subject to the legislative process before the Congress of the Union, so their final scope may change before eventual approval and publication in the Federal Official Gazette (Diario Oficial de la Federación).
Economic and Public Finance Outlook
The 2027 General Economic Policy Guidelines are based on the following macroeconomic projections:
- GDP growth of between 1.5% and 2.5%.
- Estimated inflation of 3.0% by year-end.
- Reference exchange rate of 18.0 pesos per US dollar.
- Nominal 28-day CETES interest rate of approximately 6.0%–6.1%.
- Average price of the Mexican crude oil basket of USD 61.8 per barrel.
Public Sector Borrowing Requirements (RFSP) are estimated at 3.9% of GDP for 2027, down from an estimated 4.1% at year-end 2026, reflecting the goal of continuing gradual fiscal consolidation. On the revenue side, the SHCP projects total budgetary revenue of approximately 10.64 trillion pesos, with tax revenue reaching a historic high of 15.9% of GDP (roughly 6.26 trillion pesos), representing real growth of 5.9% versus the estimated close of 2026. According to Finance Ministry’s own criteria, this increase would only be partially explained by expected economic growth, meaning a significant portion would depend on the effect of the proposed tax changes and stronger enforcement.
Key Proposed Changes to the Income Tax Law (LISR)
The proposed LISR reform is primarily aimed at combating tax evasion through adjustments to how companies determine their taxable base:
- Cap on authorized deductions: deductions would be limited to 96.67% of accruable income (or 99% of deductions, as applicable), effectively setting a minimum taxable-base floor.
- Tax loss carryforwards: prior-year losses could only be offset against up to 50% of the fiscal year’s taxable profit; any excess could be applied over the following 20 fiscal years.
- The effects of this reform would apply as early as January 2027, since the calculation of provisional payments would also be modified accordingly.
- Reduction of the net interest deduction limit from 30% to 20% of adjusted taxable profit.
- New conditions for deducting payments abroad and advance payments for services and leases.
- Repeal of the optional tax regime for corporate groups, together with payment of the deferred tax.
- Clarifications to the Contributed Capital Account (CUCA), the tax cost basis of shares, and the Net Tax Profit Account (CUFIN).
Federal Revenue Law (LIF) and Tax Incentives
Key incentives are preserved.
- Repatriation of capital: the preferential 7.5% ISR rate (instead of 15%) is maintained, subject to investment and in-country holding requirements of at least three years.
- Tax regularization program: would continue for taxpayers with annual income of up to 300 million pesos, offering a 100% reduction of fines, surcharges, and collection costs (or 90% in certain cases), through a single payment due no later than October 31, 2027.
- Merits-only revocation appeal (recurso de revocación exclusivo de fondo), without the need to secure the tax interest.
- Existing incentives for diesel, biodiesel, agricultural and forestry activities, transportation, production processes, and mining remain in place, as does the 50% toll-fee credit (although the income threshold to access this benefit would drop from 300 to 250 million pesos).
New Measures for Digital Platforms
The proposal would extend to legal entities the withholding scheme currently applicable to individuals operating through digital platforms: 2.5% ISR withholding on gross income (20% if no tax ID/RFC is provided), and IVA withholding of 50% or 100%, depending on whether the taxpayer’s registration is provided. The 100% IVA withholding would also extend to foreign residents selling goods within Mexican territory and to providers who receive payment into foreign bank accounts. In addition, platforms’ obligation to report all of their clients to the SAT would be broadened, even in cases where the platform has not processed the payment.
Financial Sector
- Reduction of the annual interest withholding rate from 0.90% to 0.68% of the principal generating the interest.
- Substantive restrictions remain in place for credit institutions, insurers (limits on IVA crediting when indemnities are paid through third parties), and IPAB (multiple banking institutions may only deduct one-fourth of their IPAB fees).
- New withholding obligations for crowdfunding institutions: 20% ISR on nominal interest paid and 16% IVA on the nominal value of accrued interest.
Federal Duties Law
The bill contemplates updated fees for government services and for the use of national assets, with notable impacts on sectors such as financial services, telecommunications, water, and maritime activities, along with new billable items arising from recent regulatory changes. The stated objective is to recover the actual cost of the services provided by the authorities, meaning that in several cases the adjustments would exceed inflation.
A Central Theme: Greater Tax Enforcement
Although the Federal Government has emphasized that the 2027 Economic Package creates no new taxes and does not raise existing rates, the General Economic Policy Guidelines themselves acknowledge that the projected growth in tax revenue (up to a historic high of 15.9% of GDP ) will depend heavily on stricter control, compliance, and enforcement mechanisms, as well as on combating tax evasion, tax avoidance, and companies that issue invoices for simulated transactions (EFOS).
Several private-sector organizations and analysts share this reading and anticipate a climate of greater scrutiny for taxpayers during 2027:
- The cap on deductions and loss carryforwards effectively functions as a minimum taxable-base floor for medium and large companies, narrowing their room for tax planning.
- The expanded withholding and reporting obligations for digital platforms are intended to close compliance gaps within the digital economy.
- Financial-sector analysts and business organizations have noted that, in the absence of a comprehensive tax reform, the tax authority is likely to rely on stricter enforcement measures and greater collection efficiency to meet its revenue targets.
For companies, this means that, even without changes to the general ISR and IVA rates, the risk of inquiries, information requests, and audit actions by the SAT will increase. It is advisable to prepare for this scenario by reviewing the company’s tax structure, the supporting documentation for deductions, transfer pricing, and compliance with formal obligations, ahead of the proposed provisions taking effect.
The 2027 Economic Package confirms a strategy of stability in general tax rates, combined with a substantial strengthening of the enforcement and compliance tools available to the tax authority. For companies, the challenge does not lie in new tax rates, but in an environment of greater evidentiary and formal compliance requirements, where properly supported deductions, sound loss-carryforward planning, compliance with digital platform obligations, and timely responses to authority requirements will be decisive.
At ST Stratego, with nearly two decades of experience in tax, customs, and foreign trade matters, and experience working with both the public and private sectors, we support our clients in reviewing and strengthening their tax and customs compliance, handling audit proceedings and legal defense, and consolidating their processes under ISO 9001–certified quality standards. Our multidisciplinary team is ready to assess the specific impact of these proposals on your operations and to work alongside you in designing the actions needed to get ahead of their eventual entry into force.
En ST Stratego, con casi dos décadas de experiencia en materia fiscal, aduanera y de comercio exterior, y experiencia en sector público y privado, acompañamos a nuestros clientes en la revisión y fortalecimiento de su cumplimiento fiscal y aduanero, la atención de procedimientos de fiscalización y defensa legal, y la consolidación de sus procesos bajo estándares de calidad certificados ISO 9001. Nuestro equipo multidisciplinario está listo para analizar el impacto específico de estas propuestas en su operación y diseñar, junto con usted, las acciones necesarias para anticiparse a su eventual entrada en vigor.
Legal Notice and Copyright

The content of this article is for informational and general information purposes only. It does not constitute a legal opinion, personalized advice, or specific tax advice.
Consequently, ST STRATEGO assumes no liability arising from the interpretation or use of this document.
Reproduction of this publication in whole or in part, by any means or format, is strictly prohibited without prior, express, and written authorization from the author. Any unauthorized use will be punished in accordance with the Federal Copyright Law and other applicable provisions.
If you would like more information on the information presented here or to learn more about our legal, tax, and foreign trade solutions, please do not hesitate to contact us at info@stratego-st.com.