VMAHUB editorial hub

In Practice: technical clarity for business decisions

Objective content on accounting, business law, holdings, tax planning, and management for readers who need to understand quickly, compare scenarios, and know when to go deeper with a specialist.

Knowledge hub

Latest articles.

52 published articles. Content curated by the VMAHUB team and reviewed with technical standards before publication, with weekly updates focused on practical usefulness.

Open a company

CNPJ, CNAE, tax regime, and formation timelines.

15 articles
Business formation

Operating permit: when it is mandatory and how to request it

An operating permit is the license that authorizes companies to operate at an address. Understand when it is mandatory and how to request it.

22 May 2026 · Vivian Sampaio

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Business formation

CNPJ: what it is and why your company needs one

CNPJ is Brazil's national registry for legal entities. Understand what it is, what it is for, and why your company needs one to operate legally in Brazil.

22 May 2026 · Vivian Sampaio

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Business formation

How to open a company through Simplifica: complete step by step

Learn step by step how to open a company through Simplifica: register, validate the activity, issue the CNPJ, and obtain the permit in one place.

22 May 2026 · Vivian Sampaio

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Business formation

CNAE: how to choose the right code for your company

CNAE affects taxation and licenses. Learn how to choose the right code and avoid paying extra tax because of the wrong CNAE.

22 May 2026 · Vivian Sampaio

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Business formation

How much it costs to open a company in 2026: from MEI to business entity

How much does it cost to open a company in 2026? From MEI to business entity: registration, accountant, permit, and maintenance costs expected for this year.

22 May 2026 · Vivian Sampaio

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Changing accountants & accounting

Office transition, accounting routine, and operational review.

18 articles
Accounting

Accountant for companies in Belo Horizonte and the San Pedro Valley ecosystem

Advisory accounting for companies in Belo Horizonte and Minas Gerais' technology ecosystem. Remote support. Talk to VMAHUB.

12 Jun 2026 · Vivian Sampaio

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Accounting

Accountant for companies in Campinas and its technology metro region

Advisory accounting for companies in Campinas: technology, telecom, and imports through Viracopos. Remote support. Talk to VMAHUB.

12 Jun 2026 · Vivian Sampaio

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Accounting

Accountant for companies in Curitiba: industry, technology, and services

Advisory accounting for companies in Curitiba: industry, technology, and services. Remote and nationwide support. Talk to VMAHUB.

12 Jun 2026 · Vivian Sampaio

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Accounting

Accountant for companies in Porto Alegre: innovation and agribusiness

Advisory accounting for companies in Porto Alegre: innovation, agribusiness, and services. Remote support. Talk to VMAHUB.

12 Jun 2026 · Vivian Sampaio

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Accounting

Accountant for companies in Rio de Janeiro: from oil and gas to the creative economy

Advisory accounting for companies in Rio de Janeiro: oil and gas, creative economy, and services. Remote support. Talk to VMAHUB.

12 Jun 2026 · Vivian Sampaio

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Incorporated independent professionals

Physicians, consultants, and other professionals evaluating structure and tax burden.

11 articles
Incorporated professionals

How to open a company as an independent professional in 2026

Learn step by step how to open a company as an independent professional in 2026. Documents, regimes, costs, and tips to avoid mistakes with the CNPJ.

22 May 2026 · Vivian Sampaio

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Incorporated professionals

Incorporated lawyer: how taxation works in 2026

Incorporated lawyer: understand how taxation works in 2026. Simples Nacional, deemed profit, and strategies to legally pay less tax.

22 May 2026 · Vivian Sampaio

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Incorporated professionals

How an independent professional legally pays less tax

How an independent professional legally pays less tax? Discover tax planning strategies that save thousands per year.

22 May 2026 · Vivian Sampaio

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Incorporated professionals

Expense deductions in income tax for independent professionals

Which expenses can an independent professional deduct in income tax? Complete guide with allowed deductions and how to document them.

22 May 2026 · Vivian Sampaio

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Incorporated professionals

Can a dentist open a clinic as an incorporated professional? Understand the rules

Can a dentist open a clinic as an incorporated professional? Understand the rules, tax regimes, costs, and the step-by-step process to regularize the activity in 2026.

22 May 2026 · Vivian Sampaio

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Editorial and fundamentals

Planning, cash flow, regulatory context, and recurring company decisions.

8 articles
Tax

How to reduce taxes in a small company (4 real levers)

It is not only about choosing the regime. See the 4 levers that reduce tax in a small company, including the 3 almost nobody tackles.

26 May 2026 · VMAHUB team

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Tax

What a family holding is and why successful entrepreneurs use one

A family holding is not only for billionaires. Understand what it is, what it is really for, and when it does, or does not, make sense for your family.

23 May 2026 · Vivian Sampaio

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Tax

Tax planning: how to reduce tax burden safely

Legal tax planning to reduce the tax burden. See the three levers that most safely preserve cash.

19 May 2026 · Vivian Sampaio

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Editorial

Welcome to /in practice: advisory content without legal jargon

/in practice is VMAHUB's content hub: accounting, taxation, and management explained without legal jargon for business owners who need to decide and act.

18 May 2026 · Vivian Sampaio

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Financial Management

ERP and accountant: how to integrate management and accounting

Why connecting the management system to accounting reduces errors, speeds closings, and improves company decisions.

16 May 2026 · VMAHUB team

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How VMAHUB uses this hub

Knowledge to guide. Advisory to execute.

/in practice exists for business owners, partners, incorporated professionals, and managers who need to turn technical topics into practical decisions. The editorial standard is simple: explain with context, show real operational impact, and make clear when reading is enough or when the subject requires diagnosis with a technical owner.

The recurring tracks cover business formation, regime review, changing accountants, structure for incorporated professionals, financial management, contracts, and holdings. For deeper analyses on tax reform, CBS, IBS, Split Payment, and the 2026-2033 schedule, the place is the Blog VMAHUB.

  • Business formation, CNAE, and classification.
  • Accounting, changing offices, and operational routine.
  • Incorporated professionals, pro-labore, and tax burden.
  • Cash flow, planning, and managerial business review.
  • Contracts, corporate matters, holdings, and wealth protection.
Firm authority —

Meet Vivian Sampaio and the VMAHUB team

Understand who leads the firm, how VMAHUB integrates accounting, tax, and legal work, and why this view matters for sensitive business, wealth, and compliance topics.

Tax strategy —

Tax strategy to reduce tax burden safely

When the discussion leaves concept and enters cash flow, margin, and risk, this front structures planning, review, and tax decision-making without improvisation.

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