How long does a complete business due diligence take?

A complete due diligence takes 30 to 120 days, depending on company size, documentation volume, and operational complexity. Companies with many employees, branches, or judicial liabilities require longer timelines.

Who pays for due diligence in an acquisition?

Generally the buyer bears due diligence costs, as they need to assess business risks. Costs include fees for lawyers, accountants, auditors, and specialized consultants, ranging from R$ 20,000 to R$ 500,000.

What happens if due diligence reveals problems?

Depends on severity. Minor issues may lead to purchase price reduction or indemnification clauses. Serious problems like tax fraud, hidden labor liabilities, or environmental issues may cause the deal to fall through.

Is due diligence legally required in Brazil?

No law mandates due diligence. However, the practice is considered market standard and its omission may generate liability for negligence. The Civil Code provides for liability for substantial error in legal transactions.

What is the difference between due diligence and an audit?

An audit verifies financial statement compliance with accounting standards. Due diligence is broader, investigating legal, tax, labor, environmental, regulatory, and reputational aspects for complete risk assessment in a transaction.

Business Due Diligence in Brazil: Complete Guide

Business due diligence is the detailed investigation process conducted before significant commercial transactions — acquisitions, mergers, investments, or partnerships. Its purpose is to identify hidden risks, contingent liabilities, and irregularities that could affect business value or create future responsibilities for the acquirer.

In Brazil, due diligence takes on special importance due to the tax system’s complexity, rigorous labor legislation, and the volume of regulatory obligations companies face. This guide presents a complete checklist for each area of investigation.

What Is Business Due Diligence?

Due diligence (diligência prévia) is the systematic and documented analysis of a target company, covering legal, accounting, tax, labor, environmental, and operational aspects. The process aims to:

Confirm information provided by the seller
Identify hidden or contingent liabilities
Assess legal and regulatory risks
Support deal pricing
Inform the negotiation of contractual clauses
Define representations and warranties

The due diligence result is consolidated in a final report (due diligence report) that guides the decision to proceed or not with the transaction.

Types of Due Diligence

Legal Due Diligence

Analyzes the target company’s legal situation:

Corporate documentation:

Updated articles of association or bylaws
Assembly and partner meeting minutes
Shareholder agreement
Corporate books (share registry, transfers)
Complete ownership structure (control chain)

Material contracts:

Contracts with major clients (revenue concentration)
Strategic supplier contracts
Real estate lease agreements
Financing and guarantee contracts
Intellectual property licensing agreements
Key executive employment contracts (non-compete clauses) Learn more about our real estate law services.

Litigation:

Active lawsuits (civil, labor, tax, criminal)
Administrative proceedings (CADE, IBAMA, Federal Revenue)
Pending tax enforcement actions
Protests and negative records
Loss probability analysis (probable, possible, remote)
Estimated and provisioned contingencies Learn more about our civil litigation services.

Financial Due Diligence

Examines the company’s financial health:

Financial statements for the last 3 to 5 fiscal years
Monthly trial balances for the current fiscal year
Independent audit report
Bank reconciliations
Projected cash flow
Indebtedness (short and long term)
EBITDA and operating margins
Required working capital
Recurring vs. non-recurring revenue

Tax Due Diligence

Brazil’s tax complexity demands detailed analysis:

Federal taxes:

IRPJ and CSLL (assessment regime, compliance)
PIS and COFINS (cumulative or non-cumulative regime, credits)
IPI (if applicable)
Employer social security contributions

State taxes:

ICMS (compliance, tax benefits used, tax substitution)
Fiscal war (benefits granted without CONFAZ agreement)
State tax clearance certificate

Municipal taxes:

ISS (applied rate, place of service provision)
IPTU (compliance)

Tax checklist:

Item	Verification
Tax clearance certificates	Federal, state, municipal
Tax regime	Adequacy and compliance
Offsets and credits	Legitimacy and documentation
Tax incentives	Compliance and revocation risks
Transfer pricing	Compliance with transfer pricing rules
Tax payment vouchers	Timely payment for the last 5 years
Installment plans	Payments current, exclusion risks

Labor Due Diligence

Brazilian labor legislation generates significant risks:

Employment contracts (CLT, independent contractor, temporary, outsourced)
Employee registry and time records
Payment of labor amounts (salary, FGTS, INSS, 13th salary, vacation)
Active collective agreements and conventions
Labor lawsuits (quantity, average value, main claims)
Terminations from the last 5 years (compliance)
Outsourcing (legality under Law 13,429/2017)
Occupational health and safety (regulatory standards, PPRA, PCMSO)
Labor compliance programs
Social security liabilities (overdue contributions)

Key concerns:

Sham independent contracting (PJ contracts masking employment relationships)
Unpaid overtime or irregular hour banks
Function deviation
Moral or sexual harassment (compensatory lawsuits)
Economic group (joint liability — art. 2, §2, CLT)

Environmental Due Diligence

Especially relevant for industry, mining, and agribusiness:

Environmental licenses (LP, LI, LO) — validity and conditions
Environmental infraction notices
Administrative proceedings at IBAMA or state agencies
Liability for contaminated areas
Environmental recovery obligations
Legal Reserve and APP (for rural properties)
CAR (Rural Environmental Registry)
Solid waste management (PGRS)
Atmospheric emissions and effluents

Environmental liability in Brazil is strict (regardless of fault) and can be transferred to the acquirer (art. 225, §3, Federal Constitution and Law 6,938/81).

Regulatory Due Diligence

Verifies compliance with sector-specific regulations:

Operating authorizations and licenses
Compliance with regulatory agencies (ANVISA, ANATEL, ANS, ANEEL)
Municipal registrations and permits
Mandatory certifications (ISO, INMETRO)
LGPD compliance (personal data protection)
Compliance and integrity programs (Anti-Corruption Law — Law 12,846/2013)

Reputational Due Diligence

Assessment of image and integrity risks:

Media and social media research
Verification against restricted lists (OFAC, EU Sanctions, PEP)
History of corruption or irregularities
Reputation with regulatory bodies
Partners’ and managers’ background
Criminal proceedings involving the company or its officers

Due Diligence Process: Steps

1. Planning

Scope definition (which areas to investigate)
Team formation (lawyers, accountants, auditors)
Timeline and deadlines
Confidentiality agreement (NDA)
Document request list (checklist)

2. Data Collection

Virtual or physical data room
Document requests to the seller
Public database searches (lawsuits, certificates)
Interviews with key managers and employees
Technical visits to facilities

3. Analysis and Assessment

Document review by area of expertise
Risk classification (high, medium, low)
Contingent liability quantification
Impact analysis on valuation multiples
Deal breaker identification

4. Final Report

The due diligence report should contain:

Executive summary with key findings
Detailed analysis by area
Risk and contingency classification
Quantification of identified liabilities
Risk mitigation recommendations
Suggested contractual clauses (indemnification, retentions)

Contractual Clauses Derived from Due Diligence

Due diligence findings support essential clauses in the purchase agreement:

Representations & warranties: seller declarations about the company’s condition
Indemnification: obligation to compensate for post-closing discovered liabilities
Escrow account: partial price retention in a guarantee account
Earn-out: variable payment contingent on future targets
MAC clause (Material Adverse Change): allows withdrawal in case of material adverse change
Conditions precedent: suspensive conditions for closing

Common Due Diligence Mistakes

Insufficient scope: not investigating all relevant areas
Timeline too short: pressure to close without adequate analysis
Excessive reliance on seller declarations: verify everything independently
Ignoring contingent liabilities: labor and tax lawsuits may materialize
Not investigating the corporate chain: holdings and subsidiaries may have hidden liabilities
Underestimating environmental risks: strict liability can be transferred
Not verifying LGPD compliance: fines of up to 2% of revenue

Conclusion

Business due diligence is an indispensable step in any significant transaction in Brazil. The complexity of the Brazilian regulatory environment — with its intricate tax system, protective labor legislation, and strict environmental liability — makes prior investigation essential for investor protection.

A well-conducted due diligence process, with a qualified multidisciplinary team, significantly reduces post-acquisition surprise risks and supports negotiation of appropriate contractual clauses.

For due diligence and business transaction advisory, consult our specialists in business law.

This article is for informational purposes only and does not constitute legal advice. Each case has specific circumstances that should be analyzed by a qualified attorney.