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US Corporate Tax Calculator

US Corporate Tax Calculator MCP Connector for Claude

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Estimate US federal and state corporate income taxes, providing comparative analysis between C-Corp, S-Corp, and LLC structures.

3 tools Official Updated Jun 28, 2026 Official Vinkius Partner
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This MCP server provides a specialized calculation engine for estimating US corporate tax liabilities. It allows AI agents to retrieve state-specific tax rates using get_state_tax_rate, calculate detailed federal and state tax breakdowns with calculate_tax_liability, and perform complex comparative analyses between different business entities like C-Corp, S-Corp, and LLC via compare_business_structures. The tool accounts for the 21% flat federal rate and applies hardcoded state-level corporate income tax rates to provide an accurate effective tax rate estimation.

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

calculate_tax_liability

Calculates the specific tax breakdown for a single profit amount in a given state

compare_business_structures

Provides a side-by-side comparison of tax burdens for different business structures

get_state_tax_rate

Retrieves the hardcoded corporate income tax rate for a specific US state

See how to talk to your AI agent using US Corporate Tax Calculator.

What is the corporate tax rate in California?

The tool `get_state_tax_rate` can be used with 'CA' to retrieve the current hardcoded rate.

Calculate the tax liability for a $500,000 profit in Texas.

Using `calculate_tax_liability` with a profit of 500000 and stateCode 'TX' will provide the federal, state, and total tax breakdown.

Compare C-Corp vs LLC for a $1,000,000 profit in New York.

The `compare_business_structures` tool will analyze the tax implications for C-Corp, S-Corp, and LLC based on the $1,000,000 profit in NY.

You can use the `get_state_tax_rate` tool by providing the two-letter US state abbreviation (e.g., 'NY' for New York).

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