Databutler Us Rates
US federal 2026 tax brackets, standard deductions, payroll and retirement limits, sourced.
Connect it
Settings → Connectors → Add custom connector
URL: https://databutler.dev/api/mcp/us-ratesSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://databutler.dev/api/mcp/us-rates{
"mcpServers": {
"databutler-us-rates": {
"url": "https://databutler.dev/api/mcp/us-rates"
}
}
}claude mcp add --transport http databutler-us-rates https://databutler.dev/api/mcp/us-rates{
"servers": {
"databutler-us-rates": {
"type": "http",
"url": "https://databutler.dev/api/mcp/us-rates"
}
}
}1 tools, verified live
us_rates_lookupread-onlyCurrent 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
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