Asset vs. Stock: Structuring the Deal for Mexican Acquirers

Current as of: April 4, 2026. This article reflects legal and regulatory authorities, administrative guidance, and market practice available as of the date above. Rules, thresholds, agency guidance, and administrative practice may change after that date, and the analysis may not apply the same way to every set of facts.

Asset vs. Stock: Structuring the Deal for Mexican Acquirers

The choice between an asset purchase and a stock purchase is often one of the most important structural decisions in an acquisition. It can affect tax treatment, contract continuity, diligence scope, post-closing liability exposure, and financing options. For Mexican acquirers entering the U.S. market, the analysis may become more complex because financing eligibility, treaty issues, transfer pricing, and cross-border enforcement considerations can materially affect the economics of each structure.

Key Points

• Asset purchases offer tax benefits and liability protection. The buyer assumes only disclosed liabilities and receives a stepped-up basis in acquired assets, generating depreciation deductions. The cost: complex multi-asset transfers and the need to renegotiate customer contracts and key agreements.

• Stock purchases preserve contract continuity and regulatory status. The legal entity remains the same, so contracts generally continue without formal reassignment - though many agreements contain change-of-control provisions that may allow counterparties to terminate or renegotiate. This continuity is critical for businesses holding non-assignable permits or franchise agreements. The drawback: the buyer inherits all liabilities (known and unknown) and receives no tax deductions for the acquisition premium unless a qualifying election (such as §338(h)(10) for S-corp or consolidated group targets) is made.

• SBA eligibility should be confirmed against current policy before it is built into the deal model. As of April 4, 2026, SBA policy materially limits eligibility where the ownership structure includes non-qualifying foreign ownership. Buyers should confirm the current rule directly with SBA guidance or qualified counsel and should generally model alternative financing sources from the outset.

• Reps and warranties allocate information risk to the party best positioned to know the truth. The seller has intimate knowledge; the buyer is a relative outsider. Broad representations with limited carve-outs provide protection. Survival periods for tax, employment, and operational representations are negotiated terms that should be aligned with the underlying risk profile, applicable statutes, and the parties' credit support.

• Indemnification escrow is often a critical remedy. Escrow size, survival periods, baskets, and caps are negotiated transaction terms and vary by deal size, industry, seller creditworthiness, and cross-border enforceability.

• Due diligence scope depends on structure. Asset purchases require detailed liability schedules and contract review. Stock purchases require deeper investigation into litigation history, environmental exposure, and undisclosed tax disputes - all things the buyer is inheriting.

• Cross-border financing coordination is essential. US and Mexican lenders often operate at the subsidiary level (US lender funds US acquisition debt; Mexican parent funds equity). Currency exposure must be managed; intercompany loan terms must be structured at arm's-length prices to satisfy transfer pricing rules.

I. Asset Purchases: Tax Efficiency and Liability Isolation

a) The Step-Up in Basis Advantage

When assets are purchased, Section 1060 of the Internal Revenue Code requires allocation of the purchase price across individual assets at their fair market value. This allocation creates an immediate tax benefit: depreciation and amortization deductions can create meaningful future tax benefits, but the magnitude and timing depend on asset mix, purchase-price allocation, recovery periods, and the buyer's tax profile.

Contrast this with a stock purchase, where the seller's original cost basis survives the transaction. The buyer pays a premium above book value, but the corporation's assets retain their old depreciated basis. The buyer's acquisition cost generates no deduction - unless a qualifying election is available. For targets that are S corporations or members of a consolidated group, the parties may jointly elect under IRC §338(h)(10) to treat the stock purchase as a deemed asset purchase for tax purposes. A §338(h)(10) election results in the step-up in basis while preserving the legal form of a stock purchase for non-tax purposes (the entity remains the same, though contract consents, permit transfers, and regulatory approvals triggered by the stock sale itself must still be analyzed). The election requires seller agreement because it accelerates the seller's tax recognition; this should be negotiated early. (For other targets, alternatives such as §338(g) or §336(e) may warrant analysis.) Any present-value estimate of the step-up benefit should be modeled from the actual purchase-price allocation, recovery periods, and the buyer's tax profile.

The allocation follows the §1060 residual method, with purchase price allocated among asset classes based on fair market value. Equipment may be depreciable under applicable recovery rules, inventory is generally recovered through cost of goods sold, and acquired customer-based intangibles (customer lists, relationships) and goodwill are §197 intangibles amortized ratably over 15 years. Buyers and sellers may negotiate allocations, but the allocation must be supportable with fair-market-value appraisals, comparable company analysis, and documentation that withstands IRS audit scrutiny.

US-Mexico overlay. The U.S. basis step-up in an asset purchase does not necessarily produce a parallel Mexican tax benefit. The Mexican tax consequences of an asset acquisition depend on the structure, the nature of the assets, and the applicable provisions of the LISR. Coordination with both US and Mexican tax advisors is necessary to structure the intercompany ownership and timing to maximize deductions in the jurisdiction where the economic benefit will be realized.

b) Liability Protection and Contract Renegotiation

The second advantage of an asset purchase is selective assumption of liabilities. The buyer acquires specific assets and assumes only liabilities explicitly listed in the purchase agreement. Everything else - pending litigation, environmental contamination, unfunded pensions, warranty claims - stays with the seller's entity.

This creates a "clean slate." The buyer knows exactly what is being acquired and what it is responsible for. The seller typically retains liabilities not expressly assumed, but liability isolation is not absolute - successor liability doctrines, fraudulent transfer theories, environmental statutes, and bulk-transfer-type creditor protections may apply depending on jurisdiction and facts. Buyers should not assume the selling entity will remain a meaningful indemnification source after closing; escrow, holdbacks, and guarantees remain critical.

Asset purchases also permit contract renegotiation. The buyer does not automatically assume the seller's supplier agreements, customer contracts, or leases. If a supplier contract is onerous or a lease is above market, the buyer can decline it and negotiate fresh terms from a position of strength. For distressed businesses or those with legacy vendors, this flexibility is valuable.

The cost is transaction complexity. Title must be transferred separately for each asset class: real property (via deed), equipment (via bill of sale and related assignment documents), intellectual property (via trademark/patent assignment), customer lists (via data transfer agreements and customer consents). Accounts receivable require customer notice. The process is time-intensive and involves fees for title companies, recording offices, and specialized counsel.

US-Mexico overlay. When real property in Mexico is being purchased as part of the acquisition, federal foreign ownership restrictions may apply. Under Article 27 of the Mexican Constitution and the Foreign Investment Law, foreigners generally may not directly acquire title to real property in the restricted zone (100 km from borders, 50 km from coasts). Residential property in the restricted zone is typically acquired through a bank trust (fideicomiso), while non-residential property may in some cases be acquired through a Mexican company with foreign investment, subject to statutory requirements. Title transferability must be verified before structuring as an asset purchase; if real property cannot transfer directly, the acquisition may need to be structured as a stock purchase of a Mexican entity holding the property.

II. Stock Purchases: Operational Simplicity and Hidden Risks

a) Contract Continuity and Non-Assignable Permits

In a stock purchase, all shares of the target corporation are acquired. The business continues uninterrupted in the hands of its new owner. The legal entity holding contracts remains the same, so contracts generally do not require formal reassignment. This is especially critical for businesses holding non-assignable assets.

Consider a business holding an FDA approval, a franchise agreement, a broadcast license, or an exclusive distributor contract that requires franchisor/licensor approval before transfer. In an asset purchase, reassignment may require months of regulatory or third-party approval, or may not be possible at all. A stock purchase avoids formal reassignment of these agreements, though many contracts and regulatory regimes treat a change of control as a consent event or deemed assignment - contract and regulatory consent analysis remains essential.

Similarly, businesses with valuable credit terms with suppliers, established banking relationships, or government contracts benefit from stock purchase continuity. The legal entity holding these relationships doesn't change; the relationships survive ownership change.

For regulated businesses (banks, insurance companies, healthcare providers), stock purchases remain a common approach. Regulatory approval is required for change of control, but once granted, the business operates with minimal disruption. An asset purchase of a regulated business is often impractical.

b) The Liability Inheritance Problem

The critical downside of stock purchases is inheritance of all liabilities. The buyer assumes every obligation - pending litigation, environmental claims, tax disputes, employment liabilities, product liability, breached contracts - whether disclosed or undisclosed. The seller has exited; their liability is limited. The buyer is now responsible.

Even with extensive due diligence, surprises emerge post-closing. An environmental assessment may miss groundwater contamination. A litigation search may not surface pending claims filed after the search date. An employment audit may not identify wage-and-hour violations. These become the buyer's problem after closing.

The seller's indemnification is the buyer's recourse, but only if the seller has sufficient assets and is willing to fight the claim. For many acquisitions, the seller has spent or distributed the purchase proceeds within months of closing, leaving the indemnification escrow as the buyer's only real remedy. For cross-border transactions where the seller is in Mexico or has dissolved the US entity, the buyer's practical recourse is even more limited.

Stock purchases also offer no step-up in basis. The corporation retains its original basis in assets. The buyer has paid a premium, but captures no deduction for that premium. From a tax perspective, the buyer has paid above value and received no deduction - a significant disadvantage relative to asset purchases.

III. Representations, Warranties, and Indemnification: Allocating Information Risk

a) Scope and Survival Periods

Representations and warranties are the seller's assurances about the target's condition. They cover financial accuracy, tax compliance, litigation, contracts, environmental compliance, intellectual property, employment matters, and regulatory compliance. The scope of reps is negotiated; buyers seek broad, unqualified statements; sellers seek narrow, heavily qualified ones.

A balanced representation includes three elements: (1) the core assertion ('Financial statements are accurate and complete'), (2) standard carve-outs ('except as disclosed in Schedule A'), and (3) a materiality threshold ('except for matters that would not reasonably be expected to result in liability greater than $50,000 individually or in the aggregate').

Survival periods determine how long after closing indemnification claims can be brought. Standard practice: ordinary business reps (contracts, customers, operations) survive 12-24 months; tax and employment reps survive 3-6 years; fundamental reps (ownership, authority) survive indefinitely or 5-7 years. The longer survival reflects the reality that tax and employment claims take years to surface.

US-Mexico overlay. Mexican tax authorities have longer statute of limitations than the US (up to 5 years for corporate tax disputes, longer for certain issues). Indemnification survival for tax matters should extend 3-5 years to align with Mexican statute of limitations. Similarly, Mexican employment law claims can surface years after employment termination. Extend employment-related rep survival to 3-4 years.

b) Escrow Mechanics and Baskets/Caps

Indemnification typically works through escrow. Escrow size, survival periods, baskets, and caps are negotiated transaction terms and vary by deal size, industry, seller creditworthiness, and cross-border enforceability.

Two parameters limit indemnification exposure: baskets and caps. A basket is a de minimis threshold below which individual claims do not trigger indemnification; once total claims exceed the basket, indemnification begins. A cap is a ceiling on total indemnification exposure. Basket and cap levels are negotiated transaction terms and vary by deal size, industry, seller creditworthiness, and cross-border enforceability.

For cross-border deals, escrow and indemnification terms should reflect the buyer's limited practical recourse against a foreign or dissolved seller entity.

When making claims, the buyer must notify the escrow agent with detailed evidence, quantified damages, and citation to the specific rep breached. Sellers often contest claims, asserting the issue was disclosed, damage is speculative, or the rep doesn't apply. Clear, unambiguous reps and thorough disclosure schedules reduce claim disputes.

IV. Financing Implications for Mexican Acquirers

a) The SBA Lending Collapse for Foreign Owners

On February 2, 2026, the SBA announced a policy change (effective March 1, 2026) materially restricting SBA 7(a) eligibility for ownership structures that do not satisfy the SBA's current citizenship and principal-residence requirements. Current requirements should be verified directly with the SBA.

Mexican acquirers should generally consider alternatives: traditional bank financing, seller financing, and private capital each have lender-specific leverage, tenor, covenant, and pricing terms that should be modeled for the particular transaction.

US-Mexico overlay. Mexican lenders (BBVA México, Scotiabank México, Banorte) are sometimes willing to finance US acquisitions, typically at the parent level or through cross-border credit facilities. However, they require strong financial covenants and typically demand personal guarantees from the buyer. Currency exposure becomes a concern if borrowing occurs in USD while earnings are in pesos; exchange rate movements then affect debt service.

b) Structuring Cross-Border Financing

Most acquisitions combine multiple financing sources: equity (buyer's cash or investor capital), bank debt, and seller notes. For a Mexican buyer, structuring often involves a US lender financing acquisition debt at the subsidiary level and a Mexican lender (or Mexican parent capital) financing equity at the parent level.

This creates complexity: two debt documents with different covenants, currency exposure at the conversion point, and intercompany loan terms that must satisfy transfer pricing rules (pricing at arm's-length rates, proper documentation, consistent application).

Currency exposure must be managed explicitly. If the acquisition is priced in USD but the target generates MXN revenue, FX risk arises. A strengthening peso reduces the dollar value of distributions; a weakening peso increases dollar debt service. Hedging strategies include forward contracts to fix USD/MXN rates, natural hedges (USD revenue from exports), or pricing adjustments at exit.

Intercompany loans from Mexican parent to US subsidiary are common, but must be documented with written terms (interest rate, maturity, prepayment provisions) and must be priced at arm's-length rates. The IRS and Mexico's tax authority both scrutinize intercompany pricing; undocumented or below-market rates trigger transfer pricing disputes.

V. Cross-Border Tax Considerations for Mexican Buyers

If the acquisition structure uses a partnership or LLC taxed as a partnership, the partnership may have withholding obligations under IRC §1446(a) on income effectively connected with a US trade or business allocable to foreign partners. Withholding generally applies at the highest applicable rate under §1 or §11, subject to detailed rules. Separate withholding may also arise under §1446(f) on transfers of partnership interests. For Mexican buyers acquiring through pass-through entities, these withholding obligations may exceed anticipated tax liability, requiring careful structure selection.

Mexican buyers with a controlling participation in a US C-corporation may face potential exposure to Mexico's REFIPRES anti-deferral regime, depending on their level of participation, the character of the income, and applicable statutory exceptions. Under the Mexican CFC rules, the analysis generally looks to whether the foreign entity is subject to an effective foreign income tax of less than 75% of the Mexican tax that would apply to the same income. Because the US federal corporate rate (21%) may fall below this threshold depending on the income character and effective rate analysis, REFIPRES may require the Mexican shareholder to recognize the actual proportional income of the US entity and pay Mexican income tax at the applicable statutory rate (currently 30% for corporations, up to 35% for individuals depending on marginal bracket). This is not "deemed income" but the shareholder's actual share of the entity's profits. Whether a specific US C-corporation falls into the regime depends on entity-level and income-level analysis - it cannot be determined solely by comparing statutory rates. This regime fundamentally affects the economics of retaining earnings in the US entity.

When a foreign person disposes of a US real property interest (USRPI), FIRPTA withholding under IRC §1445 applies. The buyer must generally withhold 15% of the amount realized (10% if the amount realized is $300,001 to $1,000,000 and the buyer intends to use the property as a residence; no withholding is required if the amount realized is $300,000 or less and the buyer intends residential use). The withholding obligation depends on the seller's foreign status and the nature of the property transferred. For Mexican sellers, the withholding may be reduced or eliminated through a withholding certificate (Form 8288-B) if the anticipated tax liability is lower than the default withholding.

US corporations that are 25% or more foreign-owned must file Form 5472 (Information Return of a 25% Foreign-Owned US Corporation) reporting transactions with related parties. The penalty for failure to file is $25,000 per return, per year, and the IRS has increased enforcement in recent years.

Under Article 24 of the US-Mexico Income Tax Treaty, Mexico may allow a credit for qualifying US taxes paid against the Mexican tax on the same income, subject to the treaty's terms and the limitations of Mexican domestic law. However, the credit mechanics require careful coordination: the credit is limited to the Mexican tax attributable to the US-source income, and timing differences between US and Mexican tax years may create cash flow mismatches.

If the US entity is an eligible LLC, the entity may file Form 8832 to elect its US tax classification. An election to treat the LLC as a disregarded entity applies only for US federal tax purposes; Mexican tax treatment must be analyzed independently under Mexican law, as Mexico applies its own entity-classification rules and hybrid-entity mismatches can arise. The election timing affects when US tax obligations begin and should be coordinated with the closing timeline.

VI. Practical Structuring Recommendations

Decision framework. The target's liability profile and contract criticality drive the structural choice. Manufacturing businesses with potential environmental exposure typically favor asset purchases. Regulated businesses with valuable permits typically favor stock purchases. High-growth tech companies with valuable customer contracts typically favor stock purchases (since contracts are non-assignable and represent significant value).

Due diligence tailoring. For asset purchases, a detailed seller liability schedule must be obtained. For stock purchases, deeper investigation into litigation history, tax disputes, environmental exposure, and employment liabilities is necessary. The diligence scope should match the structure chosen.

Reps and warranties strategy. Buyers will often seek broad representations with carefully negotiated carve-outs, with the scope and survival periods tailored to the target's risk profile and the parties' practical credit support. Baseline representations should cover tax (all taxes filed and paid, no disputes), employment (no undisclosed wage claims, benefits compliance), and environmental compliance (no contamination, compliance with environmental law). For cross-border deals, representations on Mexican-specific risks should be added: Mexican labor compliance, Mexican tax filing status, and regulatory approval status in Mexico.

Indemnification sizing. Escrow size, survival periods, baskets, and caps are negotiated transaction terms and vary by deal size, industry, seller creditworthiness, and cross-border enforceability.

Financing strategy. SBA financing should not be assumed to be available. A plan for traditional bank debt, seller financing, and equity capital must be developed before negotiations begin. Price sensitivity to financing terms should influence the offer price (if debt becomes unavailable, price reduction or equity increase may be necessary).

Tax coordination. Before closing, both US and Mexican tax counsel should be engaged to finalize the holding company structure, intercompany debt terms, transfer pricing methodology, and dividend repatriation plan. The cost of early US-Mexico tax coordination is usually small compared to post-closing tax exposure if structure is misaligned.

Practical Considerations

The choice between asset and stock purchase is not reversible post-closing. The structural decision affects subsequent steps and is typically resolved before negotiations begin. The due diligence scope must be defined, purchase agreement reps and warranties finalized, and financing strategy committed to at this stage. Early clarity regarding structure and liability allocation reduces disputes about what information was available at closing and what risks each party allocated.

This Insight is provided by HIRO LAW for general informational and educational purposes only. It does not constitute legal, tax, investment, or other professional advice and should not be relied upon as such. No attorney-client relationship is created by your receipt of or access to this material. The information contained herein may not reflect the most current legal developments and is not guaranteed to be complete, correct, or up to date. You should not act or refrain from acting based on any information in this Insight without first seeking qualified counsel licensed in the relevant jurisdiction(s). Each cross-border transaction, investment, and compliance matter involves unique facts and circumstances that require individualized analysis. Prior results do not guarantee a similar outcome.