Tax Law

How to Take Advantage of Tax Exemptions in the Real Estate Sector

March 15, 2026 — Enrique Benet-Gregg

The principle of strict application as an indispensable starting point

Article 5 of the Federal Tax Code (CFF) establishes that provisions that establish exceptions to tax burdens are subject to strict application. This rule of interpretation defines the perimeter within which all exemptions in the Mexican real estate sector operate: identifying the available mechanism is only the first step; structuring each transaction in a manner that strictly complies with the regulatory requirements is the task that determines whether the benefit effectively materializes. The First Chamber of the Supreme Court of Justice of the Nation has consistently reiterated that strict application does not exclude the systematic or teleological method, but it does prohibit extending exemption cases to situations not expressly provided for by the legislator. Each exemption analyzed hereinafter must be read from that perspective.

The exemption for the sale of primary residence under the LISR

Article 93, section XIX, subsection a) of the Income Tax Law (LISR) establishes the most relevant exemption in the sector for individuals: gains obtained from the sale of the taxpayer’s primary residence are exempt from ISR up to an amount of 700,000 Investment Units (UDIs). At April 2026 values, said limit is equivalent to approximately 6.6 million Mexican pesos.

Conditions for application

The exemption requires the concurrence of four material conditions: first, that the real property effectively constitute the habitual domicile of the seller, which must be evidenced through reliable documentation before the notary (voter credential with the property address, bank account statements, domestic service receipts, RFC registered at that address); second, that the sale be formalized before a public official; third, that the price or value of the sale does not exceed the threshold of 700,000 UDIs; and fourth, that the taxpayer has not applied the same exemption in the three immediately preceding years. When the price exceeds said threshold, the exemption applies only to that portion and the excess is taxed in accordance with the general regime of article 126 LISR, with the notary being the obligated withholding agent.

The silent erosion of the threshold in the Mexican Caribbean: constitutional tension and critique of tax policy

The limit of 700,000 UDIs has remained static since its incorporation into the LISR text, without an update mechanism that reflects the real appreciation of the real estate market in destinations such as Cancún, Playa del Carmen or Tulum, where market values have increased consistently over the past decade. The paradox is evident: middle-class property owners with a single residential property—not speculative investors—face partial tax exposure that the legislator originally did not conceive for them.

Taxpayers who have challenged this limit before the Federal Judicial Power have done so predominantly under the principles of proportionality and tax equity enshrined in article 31, section IV of the Constitution, arguing that the nominal fixing of the threshold without an update mechanism breaks horizontal equity between taxpayers whose actual tax capacity is comparable but whose properties are located in markets with disparate appreciation. The SCJN has rejected these arguments by applying a standard of legislative reasonableness: under that analysis, the Court has held that it is for the democratic legislator to determine the amount and periodicity of tax thresholds, and that the absence of automatic indexing does not constitute per se a violation of tax capacity as long as the threshold preserves some rationality with the purposes of public policy that motivated the exemption. In doctrinal terms, the Court opted for a deferential scrutiny—analogous to rational basis in comparative law—rather than a strict proportionality test that would have required demonstrating that the static threshold is the least burdensome means to achieve the legislative purpose.

It is essential to distinguish the constitutional holding from the critique of tax policy that is independent of it. That the limit is constitutional does not mean that it is appropriate: the Court’s own deferential reasoning leaves open the door to legislative reform that incorporates a mechanism for periodic updating such as the one De la Garza proposes when developing the principle of tax proportionality. The regressive effect in markets of high appreciation is a documentable consequence of the threshold’s stasis, not an unconstitutionality argument that the SCJN has embraced. For the taxpayer operating today in the Riviera Maya market, this misalignment is in itself a planning gap: the rigorous documentation of the proven updated acquisition cost, improvements made and commissions paid in the sale can reduce the taxable gain in a decisive manner, regardless of the consolidated constitutional position.

Deduction of real mortgage interest

Article 151, section IV of the LISR allows natural persons to deduct from their annual ISR base the real interest actually paid on mortgage loans intended for the acquisition of their primary residence, contracted with institutions that are part of the financial system, provided that the total amount of the loan does not exceed 750,000 UDIs. The creditor institution is obligated to issue an annual statement with the amount of real deductible interest in accordance with the rules of the current Miscellaneous Tax Resolution (RMF).

The concept of “real” interest—the difference between the nominal interest paid and the inflationary component of the loan—has a relevant operational impact: in periods of high inflation, the deductible amount contracts because inflation absorbs a larger proportion of the nominal interest. The restriction to the formal financial system excludes direct financing granted by developers or between private parties, schemes frequently encountered in the secondary residence market and in tourist residential projects in the Riviera Maya. This limitation represents a structural asymmetry that purchasers of properties financed outside the conventional banking system must anticipate in their tax analysis.

VAT Exemptions in the Real Estate Sector

The Value Added Tax Law (LIVA) contemplates two structural exemptions of significant impact:

Transfer of land and construction for primary residence: articles 9, sections I and II of the LIVA exempt from VAT both the transfer of land and constructions attached to the land intended for or used as primary residence. Hotels are expressly excluded from section II.
Lease of residential properties: article 20, section I of the LIVA exempts from the tax the granting of temporary use or enjoyment of properties intended exclusively for primary residence, on the condition that no complementary hospitality services are provided and the property is not leased furnished.

The technical consequence of greatest impact for developers is that these operations are exempt and not zero-rated: as they are not taxable acts, the VAT transferred in construction inputs is not fully creditable, breaking the fiscal credit chain. For mixed-use projects (residential and commercial or tourist), the LIVA Regulation and the 2026 RMF establish allocation methodologies that must be applied rigorously to avoid contingencies in audit processes. The correct qualification of the intended use of the property—residential versus tourist or commercial—is, in practice, one of the most contentious points in disputes before the SAT in real estate developments in the Mexican Caribbean.

Tax on Acquisition of Real Property (ISABI) in Quintana Roo

Given that the qualification of the intended use of the property is the axis of VAT litigation, it is analytically necessary to examine independently the ISABI, a local tax that shares that same line of interpretive conflict and which in Quintana Roo presents operational particularities directly relevant to transactions in the Riviera Maya.

The Tax Code of the State of Quintana Roo establishes the ISABI at a rate of 2% on the greater of the agreed price, the cadastral value, and the appraisal performed for purposes of the tax. The tax base, by taking the highest value of the three benchmarks, may differ substantially from the contractual price in areas with cadastral delays or in transactions where market value substantially exceeds institutional appraisal, a recurring situation in high-demand coastal developments. The exemptions provided for hereditary transfers in the direct line and between spouses are materially relevant in succession planning of family real estate assets, but the local authority interprets them restrictively: the substantiation of the relationship, the method of transfer, and the timeliness of the exemption request are requirements that, if not documented with precision from the time of execution, generate negative resolutions that are difficult to reverse in administrative proceedings. The careful documentation of these operations is not an ancillary formality but the condition for the effectiveness of the benefit, connecting directly with the central theme of rigorous structuring that runs throughout the entire sectoral analysis.

The FIBRA Regime: Fiscal Transparency and Structural Incentives

Real Estate Investment Trusts (FIBRAs), regulated in articles 187 and 188 of the LISR, constitute the real estate investment vehicle with the greatest fiscal efficiency available in the Mexican legal system. Its architecture rests on the principle of transparency: the trust is not a taxpayer of ISR; the tax burden is transferred entirely to the beneficiaries in proportion to their Real Estate Fiduciary Securities (CBFIs).

To qualify under article 187 LISR, the trust must: (i) allocate at least 70% of its total assets to real property for lease; (ii) have at least ten beneficiaries unrelated to each other and to the trustee; (iii) place its CBFIs on a recognized stock exchange; and (iv) distribute annually at least 95% of its net fiscal result. For foreign investors, article 188 LISR establishes a 30% withholding on distributions, although the treaties to avoid double taxation subscribed by Mexico can reduce this rate significantly: the Mexico-United States Convention, for example, reduces it to 15% or 5% depending on the percentage of participation of the beneficiary.

The jurisprudential confirmation that the tax obligation in a FIBRA rests with the beneficiaries and not with the trust estate is the structural foundation of the regime. Regarding trust transparency, the criteria issued by the Federal Judiciary are in the process of consolidation as settled jurisprudence: as of the publication date of this analysis, there is no jurisprudence thesis with a registration number in the Semanario Judicial de la Federación that has reached sufficient reiteration threshold under the Eleventh Era to be cited with that rank with respect to article 187 LISR in its post-2013 current text. The doctrinal foundation of trust transparency rests, therefore, on the systematic construction of article 187 LISR itself—which expressly attributes income accumulation to the beneficiaries—, on the SAT normative criteria available at sat.gob.mx that recognize this attribution operatively, and on De la Garza’s doctrine regarding the tax personality of the trust estate as a non-taxpaying entity when the law expressly transfers the obligation. Readers requiring verification of isolated criteria in the process of integration may consult the Semanario Judicial de la Federación under the search terms “fideicomiso transparencia fiscal” and “fideicomisario obligación tributaria” limiting to the Tenth and Eleventh Eras, with the warning that no specific record has been able to be confirmed with certainty as definitively applicable to the current text of article 187 LISR.

The distinction between public FIBRA and analogous private structures is critical: the advantages of article 188 LISR apply exclusively to FIBRAs listed on the stock exchange. Private real estate investment vehicles fall outside this regime and must seek alternative efficiencies through trusts with partial transparency regimes or special purpose companies, with the additional tax costs that this entails.

With respect to the so-called FIBRA-E, oriented to infrastructure and energy assets, it is necessary to clarify its legal basis. The consolidated text of the current LISR, in its version published on December 11, 2013 and with subsequent reforms applicable to 2025, does not contain independent articles denominated “187 Bis” and “188 Bis” as autonomous provisions. The provisions applicable to FIBRA-E are integrated in article 187 LISR itself—through specific paragraphs and sections incorporated by reforms subsequent to the original decree—and operationally supplemented by rules of the Miscellaneous Fiscal Resolution. If any reform after the editorial closure of this analysis had introduced a structure of “Bis” articles through a specific decree published in the DOF, such reform must be cited by its exact publication date so that the reference be verifiable. As long as this cannot be confirmed with documentary precision, the correct citation is article 187 LISR with its complementary provisions in the current RMF. What is incontrovertible is that the legislator has recognized the need to expand the transparency regime beyond the strict real estate sector, but non-listed private real estate remains without a functional equivalent.

The RESICO and its application to rental income

The Simplified Trust Regime (RESICO), incorporated into the LISR through the reform published in the Diario Oficial de la Federación on November 12, 2021 and effective from January 1, 2022 in its articles 113-E to 113-I, allows individuals with annual income of up to 3,500,000 pesos to be taxed at reduced rates—from 1% to 2.5%—on their gross income, with minimal formal burdens.

Rental income from real property is compatible with RESICO, which offers individual owners with rental portfolios a materially more efficient alternative than the general regime of Chapter III of Title IV of the LISR. The analytical inflection point is the comparison between the 35% blind deduction available in the general regime—or documented actual deductions when these exceed that percentage—versus the reduced rate without deductions of RESICO.

To illustrate the logic of that decision, consider the following simplified reference scheme, which does not constitute individualized tax advice but only an indicative analytical framework: an owner with annual rental income of 1,200,000 pesos and documented expenses representing 20% of gross income (240,000 pesos) would obtain, under the general regime with blind deduction of 35%, a taxable base of 780,000 pesos to which the rates of article 152 LISR are applied. Under RESICO, it would be taxed at an approximate rate of 2.5% on the 1,200,000 pesos gross, resulting in a tax of 30,000 pesos. The advantage of RESICO in that scenario is significant. The approximate break-even point shifts when documented expenses exceed the threshold at which the reduced net base of the general regime, applied to current progressive rates, produces an ISR lower than that resulting from applying the RESICO rate on gross income. In schematic terms: for profiles of documented expense lower than 30-35% of gross income, RESICO tends to produce a lower effective burden; when documented expenses consistently exceed that range, the general regime with actual deductions may be preferable. The exact profile of each portfolio—including the treatment of depreciation, property tax, insurance, and major maintenance—determines which regime is optimal, and that individualized analysis remains indispensable. It must be emphasized that income derived from the transfer of real property is not included in RESICO, but is governed by the specific regime of article 126 LISR independently of the transferor’s general regime.

Comparative perspective: United States and Spain

Comparative law reveals models of greater technical sophistication than the Mexican approach in the treatment of real estate exemptions, whose examination provides useful criteria for identifying gaps and promoting reforms.

United States. Section 121 of the Internal Revenue Code allows exclusion of up to 250,000 dollars in gain on the transfer of principal residence (500,000 for spouses filing jointly), provided that the taxpayer has inhabited the property for at least two of the five years preceding the sale. The threshold is not linked to a fixed unit of value but to an adjustable nominal amount, which provides greater flexibility in the face of market appreciation. Additionally, Section 1031 of the IRC allows indefinite deferral of tax on gains in investment real property through like-kind exchanges: a deferral mechanism with no functional equivalent in Mexican legislation for individuals, whose absence represents an unused regulatory opportunity.

Spain. Article 33.4.b) of Law 35/2006 on Personal Income Tax establishes the exemption for reinvestment in principal residence: the capital gain is fully exempt if reinvested in the acquisition of a new principal residence within two years. This model—which links the exemption to the taxpayer’s subsequent economic conduct—encourages residential mobility and productive reinvestment with an efficiency that the Mexican fixed exemption scheme does not achieve. SOCIMIs (Publicly Traded Real Estate Investment Company), regulated by Law 11/2009, bear structural analogy with Mexican FIBRAs but with more flexible distribution rules (80% of profits obtained) and a more accessible entry threshold for non-institutional investors.

Regulatory gaps and opportunities for lawful planning

The doctrinal analysis of Arrioja Vizcaíno identifies tax exemptions as tax policy decisions aimed at protecting activities of public interest or reducing burdens on sectors with limited contributive capacity. In the Mexican real estate sector, three structural gaps merit priority attention:

Outdated threshold for primary residence. The 700,000 UDI limit does not reflect market reality in consolidated tourist destinations. The absence of a periodic adjustment mechanism—such as the one De la Garza proposes in developing the principle of tax proportionality—generates horizontal inequities among taxpayers in different regions and discourages residential mobility in high-appreciation markets. As developed in the corresponding section, the SCJN has applied a deferential standard in reviewing this threshold, which places the correction of this gap within the scope of legislative reform rather than constitutional litigation.
Restriction on the formal financial system in interest deduction. The requirement that mortgage credit originate from financial system institutions excludes structured private financing that is common in the secondary residence market and in tourist residential projects. Margáin Manautou precisely identified this recurring tension between the strict text of the law and economic reality as a defect in legislative technique that generates unintended inequities.
The FIBRA-private investment gap. The requirement of stock exchange listing to access the FIBRA regime leaves private real estate investment funds without an efficient tax transparency vehicle, forcing them to structure themselves through entities with greater aggregate tax burden. Sánchez Miranda has documented that in the absence of a private equivalent, funds resort to chains of special-purpose entities that generate compliance costs and contingencies that the legislator could eliminate through a regulated extension of the regime.

From the tax planner’s perspective, lawful opportunities include: exhaustive documentation of proven acquisition cost with its inflationary updates at the time of disposition; structuring acquisitions through legal entities with access to accelerated deduction regimes; evaluation of the optimal regime between RESICO and general regime for rental portfolios, following the break-even logic developed in the corresponding section; and the creation of co-ownerships that maximize the use of multiple individual primary residence exemptions.

IBG Legal: real estate and tax practice in the Mexican Caribbean market

The analysis developed in this article is not abstract for IBG Legal: it is the working map of a law firm based in Cancún whose tax and real estate practice was built on the same markets—Cancún, Playa del Carmen, Tulum, Puerto Morelos—in which the gaps identified here produce concrete patrimonial consequences for developers, funds, and individual investors.

IBG Legal has assisted residential resort developers and mixed-use projects in residential/tourist tax classification before the SAT, including defense of VAT credit accrual criteria in audits where the authority questioned the apportionment applied to assets with mixed use in the coastal strip of Quintana Roo. In ISABI matters, the firm has specific experience in challenging assessments issued by state tax authorities in operations where the taxable base determined by the local authority diverged from the contract price, as well as in accrediting hereditary exemptions before the Treasury Department of the State of Quintana Roo in contexts of estate planning for family real property. In the investment vehicle arena, IBG has participated in structuring real estate investment trusts for hotel operators and vacation rental operators in the Riviera Maya that require tax efficiencies analogous to those of the FIBRA regime without meeting the stock exchange listing requirement, navigating the limitations documented in this analysis through alternative special-purpose structures.

The practice of IBG Legal encompasses tax litigation before the Federal Administrative Justice Tribunal and Federal Judiciary, defense in SAT audits, tax planning of real estate operations, structuring of investment vehicles, and advice in transactional real estate law. The firm serves domestic and foreign investors, developers, investment funds, and family offices with exposure to the real estate market of southeastern Mexico and the Riviera Maya. For inquiries on the topics analyzed in this article, please contact the tax and real estate practice team at IBG Legal.

Sources and References

Applicable Legislation

Law on Income Tax (LISR), Official Gazette of the Federation, December 11, 2013 (with subsequent amendments): articles 93 section XIX subsection a), 113-E to 113-I, 126, 151 section IV, 187 and 188. Note: the provisions relating to FIBRA-E are found in article 187 LISR and in the supplementary rules of the Miscellaneous Fiscal Resolution; if subsequent amendments introduced an independent article structure, the corresponding decree shall be cited by its publication date in the Official Gazette.
Law on Value Added Tax (LIVA), Official Gazette, December 29, 1978 (with subsequent amendments): articles 9 sections I and II, and 20 section I.
Fiscal Code of the Federation (CFF), Official Gazette, December 31, 1981 (with subsequent amendments): article 5 (strict interpretation of tax provisions that establish exceptions).
Regulation of the Law on Income Tax (RLISR), Official Gazette, October 8, 2015 (with subsequent amendments): provisions on principal residence, real mortgage interest and FIBRAs.
Miscellaneous Fiscal Resolution 2026, Official Gazette: rules applicable to FIBRAs, residential leasing, FIBRA-E and exemptions in real property transfers.
Decree reforming, adding and repealing various provisions of the Law on Income Tax (incorporation of RESICO), Official Gazette, November 12, 2021, effective as of January 1, 2022.
Tax Law of the State of Quintana Roo: provisions on the Tax on Acquisition of Real Property (ISABI), rate of 2%, taxable base and exemptions for hereditary transfers in direct line and between spouses.
Internal Revenue Code (USA): Sections 121 (exclusion of gain on principal residence), 856 to 860 (Real Estate Investment Trusts) and 1031 (like-kind exchanges).
Law 35/2006, on the Income Tax of Natural Persons (Spain): article 33.4.b) (exemption for reinvestment in principal residence).
Law 11/2009, regulating Listed Real Estate Investment Companies — SOCIMIs (Spain).

Jurisprudential Criteria

First Panel of the Supreme Court of Justice of the Nation, theses relating to the scope of article 5 of the CFF and the compatibility of strict interpretation with systematic and teleological methods in matters of tax exemptions. For location: Judicial Review of the Federation, Tenth and Eleventh Eras, search by terms “article 5 CFF strict interpretation exemptions”. Note: IBG Legal cannot confirm a specific registration number without verified access to the most recent version of the IUS system; the reader must verify the current records directly at sjf.scjn.gob.mx.
Plenary and Panels of the Supreme Court of Justice of the Nation, criteria on the constitutionality of quantitative limits on tax exemptions under the principle of legislative reasonableness (article 31, section IV of the Constitution). The Court’s analysis regarding the 700,000 UDIs threshold applied a deferential standard of ordinary review, distinguishable from a strict proportionality test. For location: Judicial Review of the Federation, Tenth Era, search by terms “principal residence 700,000 UDIs constitutionality legislative reasonableness”.
Criteria on the legal nature of the trust as a transparent entity for Income Tax purposes and the attribution of the tax obligation to beneficiaries: in the process of consolidation under the Eleventh Era. As of the date of this analysis, there is no established jurisprudence thesis with a confirmed registration number in the Judicial Review of the Federation applicable to article 187 LISR in its post-2013 text. The direct normative basis is article 187 LISR itself; for verifiable normative criteria from the SAT on attribution of FIBRA income, see sat.gob.mx, normative criteria section.
Collegiate Circuit Courts in administrative and tax matters, theses relating to the evidentiary requirements to prove the status of principal residence in inspection proceedings and before the notary in the transfer. For location: Judicial Review of the Federation, Tenth and Eleventh Eras, search by terms “principal residence accreditation requirements proof transfer notary”. The reader must verify specific records at sjf.scjn.gob.mx given that IBG Legal cannot confirm individual registration numbers without verified access to the updated system.

Legal Doctrine

Arrioja Vizcaíno, Adolfo. Tax Law. 22nd edition. Mexico: Editorial Themis, 2014. Chapters on exemptions, tax policy and principle of strict application.
De la Garza, Sergio Francisco. Mexican Financial Law. 28th edition. Mexico: Editorial Porrúa, 2010. Treatment of the principle of tax proportionality, the technique of exemptions and the criterion for updating tax thresholds.
Margáin Manautou, Emilio. Introduction to the Study of Mexican Tax Law. 23rd edition. Mexico: Editorial Porrúa, 2014. Analysis of strict interpretation in matters of exemptions and its limits in light of economic reality.
Sánchez Miranda, Arnulfo. ISR and IVA for Individuals. Mexico: ISEF, updated edition 2025. Analysis of RESICO, its special regimes and its practical application to real estate rental activity.
Flores Zavala, Ernesto. Elements of Mexican Public Finance. Mexico: Editorial Porrúa. Historical reference on the structure of ISR in Mexico and the evolution of exemption regimes.

Official Sources

Tax Administration Service (SAT): normative criteria on primary residence, FIBRAs, attribution of income to beneficiaries and residential rental, available at sat.gob.mx. SAT’s normative criteria constitute, in the absence of firm consolidated case law on specific points of the FIBRA regime, the most accessible verifiable source on the position of the administrative authority.
Bank of Mexico (Banxico): daily values of the Investment Unit (UDI) published in the Official Gazette of the Federation, essential for calculating exemption and deduction thresholds.
National Banking and Securities Commission (CNBV): regulation applicable to FIBRAs, CBFIs and stock exchange listing requirements.
Mexican Stock Exchange (BMV): listing rules for CBFIs and operational requirements for public FIBRAs.
Federal Judicial Journal, available at sjf.scjn.gob.mx: primary source for verification of isolated theses and case law cited in this analysis. Readers are advised to consult this system directly to obtain updated registration numbers of the referenced criteria.