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Vinkius

Simples Nacional Calculator Connector for AI agents.

4 live capabilities

Calculate Brazilian DAS tax amounts and Fator R eligibility accurately.

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Why people use Simples Nacional Calculator

Simples Nacional Calculator for Brazilian Tax Compliance

This Connector handles all that math in one go. You just tell your agent the revenue and the activity, and it pulls the right constants and calculates the final amount. You get a clear, accurate DAS figure without ever having to open a spreadsheet or doubt your math.

  • Claude
  • ChatGPT
  • Gemini
  • Cursor
  • Visual Studio Code
  • Windsurf

What Vinkius changes

You get accurate Brazilian tax figures in seconds instead of spending hours on manual calculations.

Use it from Claude, ChatGPT, Cursor or another AI client you already have.

One account · 5,900+ Connectors

  1. Real-world use case 01

    Client Tax Audit

    A tax consultant needs to quickly see how much tax a client with 500k revenue will pay in Annex III using `calculate_effective_rate`.

  2. Real-world use case 02

    Payroll Optimization

    A business owner wants to know if increasing their payroll will help them qualify for a lower tax bracket by using `evaluate_factor_r`.

  3. Real-world use case 03

    Monthly Batch Processing

    An accountant is preparing a monthly summary and needs the exact DAS amount for five different clients at once using `compute_monthly_tax_amount`.

Complete set · 4capabilities

The complete Simples Nacional Calculator capability set.

These are the exact actions your AI can choose when you ask it to work with Simples Nacional Calculator.

Capability set01 / 01

01—04

4 capabilities in this set.

Part of 4 available through Simples Nacional Calculator.

  1. 01 Capability

    Get bracket parameters

    Fetches the specific tax constants for different business activities. It makes sure the agent uses the right rules for the specific industry.

  2. 02 Capability

    Calculate effective rate

    Calculates the dynamic tax rate based on revenue and deductions. This ensures your agent uses the correct percentage for the current year.

  3. 03 Capability

    Compute monthly tax amount

    Determines the final tax amount due for the month. It takes the rate and revenue to give you a final DAS figure.

  4. 04 Capability

    Evaluate factor r

    Checks if a company qualifies for the Fator R payroll requirement. This helps determine if a business can move into a more favorable tax tier.

Set up in minutes

One URL. Then ask Simples Nacional Calculator to work.

Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Simples Nacional Calculator from the conversation.

Choose your client

Live preview
Advanced clients IDE · CLI

Claude · Web + desktop

Official guide ↗

Connector URL · ready to paste

Streamable HTTP
https://edge.vinkius.com/vk_preview_wh7Vc0yyMzCvjI1VHFexb9BswR51aQnhfszsWVkb/mcp
  1. Step 01

    Open Connectors

    In Claude Web or Claude Desktop, open Settings and choose Connectors.

  2. Step 02

    Add the URL

    Choose Add custom connector, name it Simples Nacional Calculator, and paste the URL above.

  3. Step 03

    Turn it on in chat

    Select +, open Connectors, and enable Simples Nacional Calculator for the conversation.

Where the request belongs

Work Simples Nacional Calculator can move forward.

Built around the request

This is for the Brazilian accountant who doesn't want to double-check every spreadsheet entry or the small business owner trying to figure out their monthly tax bill without hiring a consultant for every single question.

01

Tax Accountant

Verifies tax brackets for multiple clients during peak filing seasons.

02

Finance Manager

Estimates monthly cash flow by predicting DAS payments for different revenue scenarios.

03

Small Business Owner

Checks if their current payroll structure qualifies for the lower Annex III rate.

Build the capability set

Add more capabilities.

Each Connector adds new actions and data without changing how you work.

Browse Connectors
PIS/COFINS Tax Calculator logo
01 3 capabilities

PIS/COFINS Tax Calculator

Calculate PIS and COFINS tax liabilities for cumulative and non-cumulative regimes.

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Brazilian Income Tax & Social Security Calculator logo
02 3 capabilities

Brazilian Income Tax & Social Security Calculator

Calculate Brazilian IRPF and INSS deductions for 2024/2025.

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Brazil CLT Payroll Calculator logo
03 4 capabilities

Brazil CLT Payroll Calculator

Calculate Brazil's CLT payroll components including INSS, IRRF, net pay, and employer costs.

View Connector
Tax Regime Comparator logo
04 2 capabilities

Tax Regime Comparator

Simulate and compare Brazilian tax regimes to find the most cost-effective structure for your business.

View Connector
DAS Payment Scheduler logo
05 3 capabilities

DAS Payment Scheduler

Automated annual calendar generator for Brazilian Simples Nacional tax payments, handling holiday-based date shifts and overdue period alerts.

View Connector
Pro-Labore Tax Calculator logo
06 3 capabilities

Pro-Labore Tax Calculator

Calculate INSS, IRRF, and compare compensation strategies for business partners.

View Connector

Bring your own AI

Change the model, client or framework. Keep Simples Nacional Calculator connected.

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Before you connect

Questions about Simples Nacional Calculator.

The practical details behind the request, access and result.

Does Simples Nacional Calculator work for all Brazilian business types?

It works for any company under the Simples Nacional regime, covering Annexes I through V. It is designed to handle the specific brackets and rules of that tax system.

Can I use Simples Nacional Calculator to check Fator R eligibility?

Yes. You can ask your agent to check if a company's payroll expenses meet the requirements for the lower tax tiers.

How does Simples Nacional Calculator handle different revenue tiers?

It uses the accumulated revenue from the last 12 months to determine the correct bracket and dynamic rate automatically.

Will Simples Nacional Calculator give me the exact DAS amount?

It calculates the final monthly tax amount based on your revenue and the specific effective rate for your business.

Can I use Simples Nacional Calculator for Lucro Real companies?

No. This Connector is specifically built for the Simples Nacional regime. For Lucro Real or Lucro Presumido, you would need a different tax engine.

How can I find the tax rate for my business activity?

You can use the get_bracket_parameters capability. Provide your accumulated revenue from the last 12 months and the specific Annex type (e.g., Annex I for commerce) to retrieve the nominal rate and deduction amount.

What is Fator R and how does it affect my taxes?

Fator R is a rule for certain service activities. By using evaluate_factor_r, you can check if your payroll costs relative to revenue allow you to move from Annex V to the more favorable Annex III.

Can I calculate the exact amount of DAS to pay?

Yes. After determining your effective rate, use compute_monthly_tax_amount with your current month's revenue to get the final currency value of your tax liability.

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