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Connect US Income Tax Calculator to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get precise tax liability estimates for federal and state filings.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 4 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-04

4 capabilities in this set.

Part of 4 available through US Income Tax Calculator.

  1. 01

    Apply credits and deductions

    This capability calculates final tax adjustments. It handles standard deductions and specific credits like the Child Tax Credit or EITC.

  2. 02

    Calculate federal tax layers

    This capability determines the split between ordinary income, capital gains, and NIIT. It maps income across the progressive federal tax brackets.

  3. 03

    Calculate self employment impact

    This capability computes SECA tax liability. It also finds the deductible portion of self-employment income.

  4. 04

    Calculate state local taxation

    This capability calculates combined state and local tax liabilities. It works for various jurisdictions including NYC and DC.

Real work

What teams actually run

01

Self-Employment Planning

Calculate how much SECA tax you will owe based on your projected gross income.

02

Capital Gains Analysis

Determine the tax impact of selling assets by splitting ordinary income from capital gains.

03

Local Tax Estimation

Find out your combined state and local tax liability if you live in places like NYC or DC.

04

Tax Credit Verification

Check how standard deductions and credits like the EITC affect your final tax bill.

One connector, every AI

US Income Tax Calculator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put US Income Tax Calculator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

681ms average. Fast in production.

US Income Tax Calculator is checked daily against the live service.

Daily averagePeak 866ms
Oct 3Today
Fastest day
548ms
Slowest day
866ms
14-day trend
Improving-19%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 4 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of US Income Tax Calculator, so you can see the experience inside your AI.

It does not authenticate your account with US Income Tax Calculator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

US Income Tax Calculator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_Cv2i72fjLxjBDwBbhdE7rML1UOCedTRdcnFXPXlP/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — US Income Tax Calculator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "us-income-tax-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_Cv2i72fjLxjBDwBbhdE7rML1UOCedTRdcnFXPXlP/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up US Income Tax Calculator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work US Income Tax Calculator owners hand off.

This MCP is built for anyone needing to run precise US tax math through an AI interface. It is ideal for professionals who need to move from raw income data to tax liability estimates quickly.

  • 01

    Accountants

    Hand off raw client income data to the AI to generate quick tax liability estimates.

  • 02

    Freelancers

    Use the capability to estimate SECA tax and deductible portions of self-employment income.

  • 03

    Financial Planners

    Run scenarios involving capital gains and NIIT to advise clients on tax impact.

FAQ

Questions US Income Tax Calculator owners ask.

  • 01

    Can this MCP calculate taxes for cities like New York?

    Yes. The MCP includes capabilities to calculate combined state and local taxation for specific jurisdictions like NYC and DC.

  • 02

    How does it handle self-employment income?

    The MCP uses a specific capability to calculate SECA tax liability and the deductible portion of that income.

  • 03

    Does it account for capital gains?

    Yes. It can calculate the split between ordinary income, capital gains, and Net Investment Income Tax (NIIT).

  • 04

    Which AI clients can I use with this MCP?

    You can use this MCP with any compatible client, including Claude, Cursor, Windsurf, and VS Code.

  • 05

    Can I apply tax credits?

    Yes. The MCP has a capability to apply final adjustments including standard deductions and credits like the Child Tax Credit.

  • 06

    Does this capability account for self-employment tax?

    Yes, you can use calculate_self_employment_impact to determine your total SECA tax liability and the deductible portion that reduces your AGI.

  • 07

    Can I calculate state-specific taxes?

    Yes, the calculate_state_local_taxation capability allows you to compute liabilities for any of the 50 US states and specific local jurisdictions like NYC or DC.

  • 08

    How are capital gains handled?

    The calculate_federal_tax_layers capability calculates the split between ordinary income tax, preferential rates for long-term capital gains and qualified dividends, and the NIIT surcharge.

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