Tax Calculator MCP. Automate Brazilian Corporate Tax Compliance.
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The Presumed Profit Tax Calculator determines Brazilian corporate taxes, handling both Corporate Income Tax (CIT) and Social Contribution on Net Profit (SCLL) using the specific rates of the 'Presumed Profit' regime.
It calculates the precise taxable base—using 8%, 16%, or 32% based on activity type—and then computes the full tax liability into a single, auditable summary report.
What your AI agents can do
Calculate cit breakdown
Calculates the detailed components of Corporate Income Tax (CIT) payable.
Calculate scll liability
Determines the Social Contribution on Net Profit (SCLL) amount due.
Generate tax summary report
Compiles all calculated tax figures into a single, finished summary document.
It calculates the starting taxable amount based on gross revenue and the specific tax rate tied to your business activity.
You get a detailed breakdown of Corporate Income Tax (CIT), including monthly surcharge calculations, all in one go.
It calculates the Social Contribution on Net Profit (SCLL) liability based on your net profit data.
You receive a single, consolidated report that summarizes all tax liabilities and calculations for easy filing.
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Supported MCP Clients
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Presumed Profit Tax Calculator with 4 Tools
These tools allow you to calculate every step of Brazilian corporate tax liability, from determining the initial taxable base to generating the final summary report.
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Start using Presumed Profit Tax Calculator on Vinkius019ed0fbcalculate cit breakdown
Calculates the detailed components of Corporate Income Tax (CIT) payable.
019ed0fbcalculate scll liability
Determines the Social Contribution on Net Profit (SCLL) amount due.
019ed0fbgenerate tax summary report
Compiles all calculated tax figures into a single, finished summary document.
019ed0fbget taxable base
Calculates the initial taxable amount using gross revenue and the activity-specific rate.
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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 4 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
The headache of manual tax compliance
Right now, calculating corporate taxes means jumping between several sheets. You start with gross revenue, figure out which presumptive rate applies to your specific activity, calculate the taxable base on one tab, then copy that number into a second sheet for CIT, and finally paste *that* total into yet another section just for SCLL. It's tedious, slow, and you are always worried about misplacing a decimal or using the wrong tax code.
With this MCP, your agent handles the entire workflow. You input the revenue data once, and we automate that complex chain of calculations—from base determination to final summary report. You just get the clean answer, ready for review.
Tax Summary Report Generation
Today, generating a complete tax picture requires running multiple functions and then spending time manually aggregating the results into one single document. You have to reconcile the numbers from CIT against SCLL to ensure they match up for filing.
The `generate_tax_summary_report` tool fixes that. It runs all necessary components—the base, the CIT breakdown, and the SCLL liability—and delivers them as a finished, consolidated report instantly. The result is accurate, auditable, and ready to go.
What you can do with this MCP connector
Okay, so here's the deal with Brazilian corporate taxes under the 'Presumed Profit' regime. This MCP handles the math that usually takes hours of cross-referencing spreadsheets. You feed it your gross revenue and tell it what kind of business you run; the tool figures out the correct taxable base first.
From there, it calculates two major liabilities: Corporate Income Tax (CIT) with its monthly surcharges, and Social Contribution on Net Profit (SCLL). It doesn't just give you numbers; it walks you through every step. All this complex calculation—from determining the starting revenue amount to generating the final tax summary report—is automated into one clean process.
Vinkius enforces a financial circuit breaker with human-in-the-loop approval on every call that touches money. Your AI sets the intent, but no transaction fires without your explicit sign-off. This keeps your reporting accurate and compliant.
019ed0fb-a38c-71d8-aa6d-6917e624282d 
How Tax Calculator MCP Works
- 1 First, you input the gross revenue amount and specify the business activity type. The MCP determines the correct presumptive percentage rate to calculate the initial taxable base.
- 2 Next, it takes that calculated base number and runs two separate computations: one for the full CIT breakdown and another for the SCLL liability.
- 3 Finally, all those individual results—the taxed revenue, the CIT amount, and the SCLL amount—are compiled into a single, comprehensive tax summary report.
The bottom line is you get an end-to-end calculation that moves from raw revenue to final compliance report without manual data transfers.
Who Is Tax Calculator MCP For?
This MCP is for the accounting department manager who gets tired of manually adjusting spreadsheets and cross-checking tax code changes. It’s essential for financial analysts working with Brazilian corporate filings or any consultant needing instant, compliant estimations.
Using this MCP, you calculate the full tax burden quickly by chaining together base determination, CIT calculation, and SCLL computation for client reports.
You run scenario analyses on various revenue streams to estimate future corporate taxes under different activity presumption rates.
You generate the final, consolidated tax summary report required for monthly compliance filings, ensuring every number is accounted for.
What Changes When You Connect
- Instead of manually determining if a business is 8%, 16%, or 32% for tax purposes, the tool calculates the correct starting taxable base first. This prevents major calculation errors right out of the gate.
- You get full transparency on CIT liabilities. The MCP runs the
calculate_cit_breakdownfunction so you see every component of your Corporate Income Tax, including monthly surcharges, without having to calculate it in Excel. - The system handles SCLL calculations automatically. Using a dedicated tool for Social Contribution on Net Profit ensures that specific liability is computed correctly and added to the total report.
- Stop juggling multiple tabs. The process culminates with
generate_tax_summary_report, which aggregates all inputs into one clean, auditable document you can immediately share. - It cuts down complex tax estimation from a multi-hour task into a single prompt response. You just need to feed it the numbers and wait for the final report.
Real-World Use Cases
Forecasting a New Client
A financial analyst needs to estimate the tax burden for a new client with mixed revenue streams. They use get_taxable_base first, then feed those results into calculate_cit_breakdown and calculate_scll_liability to give the executive team a comprehensive forecast.
Monthly Compliance Filing
A bookkeeper needs to finalize the monthly tax report. They input the period's revenue, letting the MCP run the full sequence of calculations and finally generating a single generate_tax_summary_report for submission.
Auditing Past Filings
A tax accountant must validate an old filing. They can input the historical revenue data and use the tools to recalculate both the CIT and SCLL liabilities, ensuring compliance hasn't changed since the original submission.
Business Model Change Assessment
A company plans to shift its primary activity. They run a scenario test, using get_taxable_base with different presumptive rates (8% vs 32%) to understand the exact financial impact before making any changes.
The Tradeoffs
Using simple spreadsheet formulas
Manually creating a tax sheet requires you to remember which rate applies when, and then you have to calculate CIT first, then SCLL on top of that. It's slow and easy to miss the surcharge.
→
Don't try to build this yourself. Let your agent orchestrate the process. Start by calculating the initial base using get_taxable_base, and let the dedicated tools handle the complex tax components: use calculate_cit_breakdown followed by calculate_scll_liability.
Calculating taxes piece-meal
A user calculates CIT liability, copies that number, then separately figures out SCLL. They end up with two separate numbers and have to manually reconcile them later.
→
Always let the system generate the full report in one go. The generate_tax_summary_report tool handles the entire flow, taking all necessary inputs to give you a final, reconciled number.
Ignoring Activity Rates
Assuming all revenue gets taxed at a single rate (like 16%) regardless of whether the company is selling goods or providing services. This will lead to an incorrect taxable base.
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You must first use get_taxable_base. This tool specifically reads your activity type and applies the correct presumptive percentage, ensuring the starting figure is accurate before any tax calculation begins.
When It Fits, When It Doesn't
Use this MCP if you are performing end-to-end corporate tax estimation or filing for Brazilian operations under the Presumed Profit regime. This system handles the necessary sequence: Base determination -> CIT breakdown -> SCLL computation -> Final Summary Report. Don't use it if your need is only to calculate a single, isolated metric without regard for cross-liability (e.g., just calculating sales tax). If you only need one number, you might be better off with a specialized tool dedicated solely to that calculation, but this MCP provides the required audit trail and integration.
Common Questions About Tax Calculator MCP
How does the calculate_taxable_base tool work? +
The get_taxable_base tool accepts your gross revenue and business activity type. It then applies the correct presumptive rate (8%, 16%, or 32%) to calculate the exact starting taxable base amount.
Can I get a breakdown of CIT using calculate_cit_breakdown? +
Yes, calculate_cit_breakdown provides a detailed look at your Corporate Income Tax. It breaks down the liability and includes calculations for necessary monthly surcharges.
What is SCLL calculation using calculate_scll_liability? +
The calculate_scll_liability tool determines the Social Contribution on Net Profit (SCLL) amount. You provide the net profit data, and it returns the total liability based on current rates.
Do I need to use generate_tax_summary_report after all these calculations? +
Yes, running generate_tax_summary_report is key. It takes the results from the other tools—the base, CIT, and SCLL—and stitches them together into one coherent final report.
How does the `get_taxable_base` tool calculate tax rates for different activities? +
It uses the activity type you specify to determine the correct presumption rate. You don't input the rate; you just tell the MCP your business activity, and it applies the required percentage (8%, 16%, or 32%).
What happens if I provide invalid revenue data when using `calculate_cit_breakdown`? +
The tool immediately throws an error explaining the input problem. You must ensure all financial figures, like gross revenue and periods, are provided as valid positive numbers for a successful run.
What AI client apps can I use with this MCP to automate tax filing? +
You connect your preferred agent through any service that supports the Model Context Protocol. Compatibility isn't tied to specific models, just adherence to the open MCP standard.
What key data points are included when I run `generate_tax_summary_report`? +
The report consolidates all major tax liabilities: Corporate Income Tax (CIT) with its surcharge and Social Contribution on Net Profit (SCLL). It gives you one view of the total estimated tax due.
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