Disclaimer: This application has no official connection, affiliation, or representation with the Federal Government, the Brazilian Federal Revenue Service, or public agencies.
The calculations presented are approximate simulations based on the current Simples Nacional rules and do not replace the guidance of an accountant or specialized professional.

📚 Official Sources and References

The data and rules used in this application are based on public information available on the following portals and legislation:

Brazilian Federal Revenue Service – Simples Nacional Portal:
https://www.gov.br/receitafederal/pt-br/assuntos/simples-nacional

Simples Nacional – Legislation (CGSN, Complementary Laws, Resolutions):
https://www8.receita.fazenda.gov.br/SimplesNacional/Legislacao/Legislacao.aspx

Complementary Law 123/2006 – National Statute of Micro and Small Businesses:
https://www.planalto.gov.br/ccivil_03/leis/lcp/lcp123.htm

Constitutional Amendment 132/2023 – Tax Reform (IBS/CBS - in Implementation):
https://www.planalto.gov.br/ccivil_03/constituicao/emendas/emc/emc132.htm

Federal Government – ​​Updates on Tax Reform:
https://www.gov.br/pt-br/noticias/economia-e-tributacao/reforma-tributaria

💡 About the app

The Simples Nacional Calculator is an independent tool created to help entrepreneurs, accountants, and micro-businesses quickly and intuitively simulate taxes and contributions under the Simples Nacional regime.

With a modern interface, the app allows you to enter your revenue and obtain automatic tax simulations, viewing percentages, amounts, and comparisons between different annexes and brackets.

⚙️ Features

💰 Automatic calculation of taxes based on current Simples Nacional rules.

📊 Simulation of revenue brackets and corresponding tax rates.

📈 Comparison between tax regimes, such as Presumed Profit and Simples Nacional.

📤 Responsive display and a smooth experience on any device.

🧠 Why use it

Stays up to date with official changes from the Federal Revenue Service and Tax Reform.

Ideal for microentrepreneurs, MEIs in transition, and accountants.

Helps in making decisions about the best tax regime.

No personal data collection — all calculations are performed locally.

🔒 Privacy and Transparency

The Simples Nacional Calculator does not store, share, or send user information.
All simulations are processed directly on the device, ensuring complete privacy.

🧩 Technology

Developed by B20robots, the app uses modern, responsive technologies, allowing direct use via browser or as a lightweight, functional PWA application on Android devices.