databutler-us-rates
US federal 2026 tax brackets, standard deductions, payroll and retirement limits, sourced.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"databutler-us-rates": {
"url": "https://databutler.dev/api/mcp/us-rates"
}
}
}Remote endpoints
https://databutler.dev/api/mcp/us-ratesstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢us_rates_lookup(category)
Current US federal (tax year 2026) rates and thresholds read from the IRS revenue procedures and notices, SSA's Federal Register notice and irs.gov pages, each figure with its source URL, the quoted sentence or table row, verifiedDate and the prior-year value where one exists. Categories: income-tax (rate schedules for Single, Married filing jointly, Head of household and Married filing separately as bracket rows, standard deduction by filing status, additional and dependent standard deduction, top rate), social-security (OASDI wage base, employee and employer rates, COLA, quarter of coverage), medicare (rate, Additional Medicare Tax rate and thresholds by filing status, employer withholding threshold), retirement (401(k)/403(b)/457(b)/TSP deferral limit, age-50 and age-60–63 catch-ups, Roth catch-up wage threshold, § 415(c) and compensation limits, IRA and IRA catch-up, SIMPLE, highly compensated employee), hsa (contribution limits, HDHP minimum deductible and out-of-pocket maximum, excepted-benefit HRA), estate-gift (basic exclusion, GST exemption, annual gift exclusions). Federal only: state income taxes, AMT, EITC and capital-gains brackets are not covered. An unknown category answers covered:false with the nearest keys.
Input Schema
{
"type": "object",
"properties": {
"category": {
"type": "string",
"description": "one of: income-tax, social-security, medicare, retirement, hsa, estate-gift (omit to list all)"
}
}
}Community
Evidence