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Income Tax Grounding Data for AI Agents

Calculate Federal Income Tax

OperationalCredits 2 per callp50 438msFinance

Overview

Income Tax Calculator works by applying the official federal income tax brackets to your gross income after the standard deduction. It calculates the tax owed at each bracket level and returns a detailed breakdown including effective and marginal tax rates.

Live Test Income Tax Grounding Data for AI Agents Source →

The tool

Once your client is connected to the VerveContext server, this appears in its tool list as IncomeTaxGroundingDataforAIAgents. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

Tool call
{
  "name": "IncomeTaxGroundingDataforAIAgents",
  "arguments": {
    "income": "85000",
    "rate": "22"
  }
}

You do not name the tool yourself; the model picks it. Asking about 85000 in the terms this source covers is enough for it to reach for IncomeTaxGroundingDataforAIAgents on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every source in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervecontext": {
      "url": "https://api.vervecontext.com/v1/mcp"
    }
  }
}

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

ArgumentTypeDescription
incomeRequirednumberGross annual income in USD
range 0–∞
rateRequirednumberTax rate as a percentage (e.g., 22 for 22%)
range 0–100
deductionOptionalnumberOptional deduction amount to subtract from income before calculating tax
range 0–∞

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

Result
{
  "status": "ok",
  "error": null,
  "data": {
    "year": 2025,
    "filing_status": "single",
    "income": 85000,
    "standardDeduction": 15000,
    "taxableIncome": 70000,
    "totalTax": 10852.5,
    "effectiveRate": "12.77%",
    "marginalRate": "22%",
    "incomeAfterTax": 74147.5,
    "monthlyTax": 904.38,
    "monthlyIncome": 6178.96,
    "brackets": [
      {
        "rate": 0.1,
        "ratePercent": "10.0%",
        "rangeMin": 0,
        "rangeMax": 11925,
        "taxableAmount": 11926,
        "taxAmount": 1192.6
      },
      {
        "rate": 0.12,
        "ratePercent": "12.0%",
        "rangeMin": 11926,
        "rangeMax": 48475,
        "taxableAmount": 36550,
        "taxAmount": 4386
      },
      {
        "rate": 0.22,
        "ratePercent": "22.0%",
        "rangeMin": 48476,
        "rangeMax": 103350,
        "taxableAmount": 21524,
        "taxAmount": 4735.28
      }
    ]
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

FieldTypeExampleDescription
yearnumber2025Tax year used for calculation
filing_statusstringsingleFiling status used
incomenumber85000Original gross income provided
standardDeductionnumber15000Standard deduction applied based on filing status
taxableIncomenumber70000Income after standard deduction
totalTaxnumber10852.5Total federal tax owed
effectiveRatestring12.77%Effective tax rate as percentage
marginalRatestring22%Marginal tax rate (highest bracket)
incomeAfterTaxnumber74147.5Take-home income after tax
monthlyTaxnumber904.38Monthly tax amount (totalTax / 12)
monthlyIncomenumber6178.96Monthly take-home income (incomeAfterTax / 12)
bracketsPremiumarray[3]Detailed breakdown of tax by bracket
brackets.0.ratePremiumnumber0.1Marginal rate for the band, as a fraction
brackets.0.ratePercentPremiumstring10.0%Marginal rate for the band, formatted as a percentage
brackets.0.rangeMinPremiumnumber0Income at which the band starts
brackets.0.rangeMaxPremiumnumber11925Income at which the band ends
brackets.0.taxableAmountPremiumnumber11926How much of the income falls inside this band
brackets.0.taxAmountPremiumnumber1192.6Tax owed on the portion falling in this band

Why ground on it

A model can produce something that looks like this answer from its training data, and be confidently out of date or simply wrong. This source returns the current value in a shape you can check, which is the difference between an answer you can cite and one you have to hedge.

Point an evaluation at year: it is the field most worth pinning a claim to, and it is either present and current or absent — never plausibly invented.

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

StatusWhat it means
400 / 422The arguments did not validate. The message names the offending one.
401The OAuth session is invalid or expired — reconnect the server.
403Blocked by a key restriction or an IP allow-list. Never a bad identity.
404This source is not part of VerveContext. Check the catalog.
429Out of credits, or a brief rate limit. The message tells them apart.

A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Job Offer Evaluation
When weighing multiple job offers, candidate compensation portals calculate net take-home pay and federal tax obligations across different filing statuses.
Payroll Withholding Estimation
HR platforms estimate employee annual federal tax liability and monthly deductions directly from gross salary inputs to forecast withholdings.
Retirement Distribution Modeling
To model retirement drawdowns, financial advisors project changes in effective and marginal rates as client taxable distributions shift across tax bands.
Custom Rate Invoicing
Compute estimated tax obligations and remaining net earnings for freelance contracts using custom tax percentages and project deductions.

Other ways to use Income Tax Grounding Data for AI Agents

Set up Income Tax Grounding Data for AI Agents on VerveContext, or reach the same source a different way. Your VerveContext account and credits work on all of them — one key, one balance.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →
Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.VerveKit →Reference →
Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →

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