MCP For Claude Marketplace
ICMS Calculator

ICMS Calculator MCP Connector for Claude

A+

Calculate Brazilian ICMS taxes, including tax substitution (ST), tax differentials (DIFAL), and tax-inclusive base calculations.

4 tools Official Updated Jun 28, 2026 Official Vinkius Partner
More Details Connect to Claude

This MCP server provides specialized tools for calculating complex Brazilian ICMS taxes. It handles the 'inside' calculation method to find grossed-up product values, calculates Tax Substitution (ICMS-ST) using MVA (Added Value Margin), determines the tax differential (DIFAL) for B2C interstate transactions, and retrieves correct interstate rates based on regional movements. Use calculate_tax_base for tax-inclusive bases, calculate_icms_substitution for ST calculations, calculate_tax_differential for DIFAL, and get_interstate_rate to identify applicable rates between Brazilian regions.

icmsbraziltax-calculatorst-calculationdifalmva

4 tools expose this connector's capabilities to your AI agent.

calculate_tax_differential

Calculates the DIFAL amount for B2C interstate operations

calculate_icms_substitution

Calculates the amount of ICMS-ST (Tax Substitution) to be collected

calculate_tax_base

Calculates the grossed-up product value using the "inside" calculation method

get_interstate_rate

Retrieves the correct interstate tax rate based on origin and destination regions

See how to talk to your AI agent using ICMS Calculator.

Calculate the tax base for a product worth 100.00 with an 18% tax rate.

The `calculate_tax_base` tool would return a tax base of approximately 121.95 and a tax amount of 21.95.

What is the interstate rate for a shipment from Southeast to North region?

Using `get_interstate_rate` with origin 'Southeast' and destination 'North', the tool returns a rate of 7%.

Calculate DIFAL for a product worth 500.00, with an interstate rate of 12% and destination internal rate of 18%.

The `calculate_tax_differential` tool calculates a DIFAL amount of 30.00.

Use the `calculate_tax_base` tool. You provide the net product value and the tax rate, and it returns the grossed-up base and the tax amount included in that base.

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