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US sales tax for AI agents: rates, economic nexus, taxability, filing. Citation-backed.
About
US sales tax for AI agents: rates, economic nexus, taxability, filing. Citation-backed.
Remote endpoints: streamable-http: https://api.taxlocus.com/mcp
Security Report
10.0
Low Risk10.0Low RiskValid MCP server (1 strong, 0 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
Endpoint verified · Requires authentication · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"com-taxlocus-taxlocus": {
"url": "https://api.taxlocus.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
TaxLocus Open Sales-Tax Dataset
Free, weekly-updated US sales-tax rate tables — the flat data behind TaxLocus, released as an open dataset for the community.
Data as of: 2026-05-19 · Refreshed weekly from the live TaxLocus corpus.
What this is
A clean, flat snapshot of US sales-tax rates and rules:
- State base rates for all sales-tax states.
- Local jurisdiction rates — ~14,000 counties, cities, parishes, boroughs, transit and special districts.
- Economic-nexus thresholds — the per-state remote-seller registration triggers.
- Taxability matrix — state × product-category taxable/exempt treatment.
Both CSV and JSON are provided for every table.
What this is not
This is the rate data only. The address-level lookup API, the polygon geometry that resolves an address to its jurisdiction stack, and the nexus tracking tools are the paid product at taxlocus.com. This dataset will tell you the rate for a named jurisdiction; it will not tell you which jurisdictions a given street address falls in.
Files & schema
All files live in data/.
state_rates — statewide base rates
| column | description |
|---|---|
state | 2-letter state code |
rate | statewide base sales-tax rate (decimal, e.g. 0.0625) |
jurisdiction_rates — local jurisdiction rates
| column | description |
|---|---|
state | 2-letter state code |
jurisdiction_type | county, city, parish, borough, transit, or special_district |
name | jurisdiction name |
fips_code | Census FIPS code, where available (may be blank) |
rate | local rate for the jurisdiction (decimal) |
nexus_thresholds — economic-nexus thresholds
| column | description |
|---|---|
state | 2-letter state code |
sales_threshold | USD sales threshold (may be blank) |
transaction_threshold | transaction-count threshold (may be blank) |
logic | sales_only, transactions_only, sales_or_count, or sales_and_count |
measurement_period | prior_calendar_year, current_or_prior_cy, rolling_12_month, or prior_4_quarters |
taxability — state × category taxability matrix
| column | description |
|---|---|
state | 2-letter state code |
category | product-category code (e.g. food.grocery, clothing.general) |
taxable | True/False |
treatment | taxable, exempt, reduced_rate, exempt_with_cert, or partial |
manifest.json
Generation date and per-file row counts for the current snapshot.
License & attribution
This dataset is licensed under the Creative Commons Attribution 4.0
International (CC-BY-4.0) license — see LICENSE.
You are free to use, share, and adapt the data, including commercially, provided you give credit. Required attribution:
Sales-tax data by TaxLocus — https://taxlocus.com
Disclaimer
This dataset is provided for informational purposes only and is not tax advice. Sales-tax rates and rules change frequently, special districts and local boundaries are complex, and this snapshot may contain errors or omissions. Always verify against the relevant state Department of Revenue before relying on it for filing or remittance. TaxLocus makes no warranty as to accuracy, completeness, or fitness for any purpose.
Need address-level accuracy?
The free dataset gives you rates by named jurisdiction. To resolve a real street address to its exact jurisdiction stack — with geometry, product taxability, and economic-nexus tracking — use the TaxLocus API at taxlocus.com.
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