Taxlocus Data MCP Server

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

jurisdiction_rates — local jurisdiction rates

nexus_thresholds — economic-nexus thresholds

taxability — state × category taxability matrix

manifest.json

Generation date and per-file row counts for the current snapshot.

Payroll-tax open data (new — Plan 14)

Reference tables for US payroll tax — federal FICA/FUTA, state personal income tax (PIT) and SUTA wage bases, and local income tax where it exists (PA, OH, MD, IN, NYC, etc.). Same shape + CC-BY-4.0 licence; every row carries a citation_url to the authoritative source (IRS, state DOR, state UI agency) so any value can be verified or refreshed against the source. This is rate / reference data only — not a withholding-tax calculation engine, not the per-employer SUTA experience rate (which is state-assigned and not lookupable). Consumers compute their own withholding and take liability for it.

payroll_federal_rates

FICA (SS + Medicare + Additional Medicare 0.9% > $200k) and FUTA rates, wage bases, and credit max by year.

payroll_state_pit — state personal income tax (wage withholding)

payroll_state_suta — state unemployment-insurance wage base + rate range

Per-employer SUTA rates are NOT included — each employer's rate is experience-rated and assigned by the state UI agency annually.

payroll_local_income_tax — city / county / municipal income tax

Local income tax coverage (3,662 rows, 8 states): PA (2,627 PSDs) · OH (890 munis: RITA + CCA + DOR self-administered) · IN (92 counties) · MD (24 counties) · MI (24 cities) · NY (NYC + Yonkers) · MO (KC + STL) · DE (Wilmington). The remaining ~8 states with some local income tax are not yet covered (KY, IA, OR, AL, CO, WV, KS, NJ-Newark); the other ~34 states have no local income tax at all. Read PAYROLL-COVERAGE.md before relying on this data for withholding — it documents every gap and the disclaimer in detail.

payroll_reciprocity — state income-tax reciprocity agreements

Reciprocity exempts the non-resident state from withholding when an employee files the exemption form (e.g., PA REV-419, MD MW507).

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.