Connects Claude to TaxLocus's US sales tax dataset and API. Exposes state and local jurisdiction rates, economic nexus thresholds by state, product category taxability matrices, and now payroll tax reference tables including federal FICA/FUTA, state PIT and SUTA wage bases, and local income tax for eight states. Every data point includes citation URLs to the source agency. The MCP server wraps both the open weekly dataset (14,000+ jurisdictions as CSV/JSON) and the paid address lookup API. Reach for this when your agent needs to calculate tax on transactions, determine filing obligations based on sales volume, or answer nexus questions with verifiable sources instead of hallucinating tax rules.
claude mcp add --transport http com.taxlocus-taxlocus https://api.taxlocus.com/mcp