How to legally reduce taxes as a self-employed professional
Use a method to compare individual and legal-entity scenarios, regime, R-factor, expenses and withdrawals without confusing tax planning with the promise of savings.
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Legally reducing taxes starts with correctly classifying income and comparing permitted structures. It does not start with selecting a supposedly cheaper CNAE, booking personal expenses through the company or calling every withdrawal a dividend.
The method below shows where there is a genuine choice — and where a “strategy” can create tax liabilities instead.
1. Separate the individual and legal-entity scenarios
For an individual, self-employment income may involve withholding, Carnê-Leão monthly tax payments and a Livro Caixa expense ledger. For a legal entity, taxes depend on the chosen regime, while bookkeeping demonstrates profit and supports withdrawals.
Compare both scenarios using the same revenue and include:
- taxes and contributions;
- accounting and systems;
- professional-council fees and licenses;
- employment benefits or protections;
- payroll and pró-labore costs;
- the personal income tax impact of distributions.
2. Confirm the activity before choosing a regime
The CNAE code and corporate purpose must describe the service actually provided. The activity affects eligibility for Simples Nacional, the applicable annex, the R-factor and licensing. Changing a code merely to seek a lower rate does not change the taxable event.
Legal practice falls under Annex IV. Medicine, dentistry, consulting and several intellectual professions may fall under Annex III or V depending on the R-factor. Do not apply one rule to every profession.
3. Calculate the full R-factor
For activities subject to it, the R-factor compares payroll with revenue over the previous 12 months. A result of at least 28% leads to Annex III; a lower result leads to Annex V.
Test the total cost of payroll, compensation and contributions. Increasing pró-labore solely to move to another annex may not reduce total cash outflow.
4. Understand how expenses actually affect tax
Documented expenses do not reduce every tax in the same way:
- under Simples Nacional, DAS is calculated mainly on revenue, not profit;
- under Lucro Presumido, IRPJ and CSLL start from statutory percentages rather than each actual expense;
- under Lucro Real, deductible expenses affect taxable profit if they meet the requirements;
- for a self-employed individual, Livro Caixa may include necessary, customary and documented expenses within the rules.
Even when an expense does not reduce the tax calculated under a regime, correctly recording it affects the accounting profit available for distribution. Mixing personal and business accounts breaks that audit trail.
5. Treat pró-labore and profit according to their nature
Compensation for a partner’s work has social security and tax consequences. Profit is the result calculated after revenue, expenses and taxes. One cannot simply be renamed as the other to reduce contributions.
Since 2026, profits and dividends exceeding R$ 50,000 in a month, paid by the same legal entity to the same Brazilian-resident individual, are subject to 10% withholding income tax (IRRF) on the total amount. Annual income above the statutory thresholds may also be subject to the minimum tax on high income.
6. Update the Lucro Presumido simulation
Complementary Law No. 224/2025 increased certain statutory profit-presumption percentages by 10% for the portion of annual gross revenue above R$ 5 million. Receita Federal guidance applies the change to IRPJ from the first quarter of 2026 and to CSLL from the second quarter. Old comparisons based on a “fixed 11.2%” are incomplete.
Tax-review checklist
- monthly revenue separated by activity and source;
- payroll, pró-labore and related charges;
- expenses supported by documents and a business purpose;
- taxes withheld by clients;
- municipality and ISS treatment;
- current regime and annex;
- recalculated R-factor;
- accounting profit and distributions;
- effects of Law No. 15,270/2025;
- growth and contraction scenarios;
- the earliest possible date for changing regimes.
The next step is a documented calculation
Ask for a monthly simulation showing sources, assumptions and the break-even point — not just a final percentage. For individual expenses, see deductions and Livro Caixa for self-employed professionals. For company duties, see accounting obligations for incorporated professionals.
VMAHUB can organize the data and compare scenarios, clearly identifying potential savings, additional costs and classification risks.
Sources and references
- Simples Nacional Steering Committee — CGSN Resolution No. 140, compiled text
- Simples Nacional — Official guidance on the R-factor
- Receita Federal (Brazilian Federal Revenue Service) — Deductible Expenses and Cash Book in IRPF 2026
- Receita Federal (Brazilian Federal Revenue Service) — Taxation of high incomes and profits and dividends
- Receita Federal (Brazilian Federal Revenue Service) — Reduction of tax incentives and benefits
Brazilian and international business experience in one advisory view.
VMAHUB combines accounting, tax, legal and business strategy with more than 26 years of experience, including work connected to the pharmaceutical industry, retail and agribusiness. The next step is to understand how this scenario applies to your operation.