Open dataset of LLC formation costs across 51 US jurisdictions, sourced from each state's Secretary of State website + IRS guidance. Released under CC BY 4.0 — free to use commercially, with attribution.
51 jurisdictions (50 states + DC where data is available). Last verified: 2026-07-01.
| Column | Type | Description |
|---|---|---|
code |
string | Two-letter state postal code (e.g., CA, TX, DC). |
name |
string | Full state name. |
filing_fee_usd |
number | One-time domestic LLC filing fee charged by the SOS. |
filing_form |
string | Form name or number used to register the LLC. |
first_year_annual_report_fee |
number | Annual report fee for year 1. |
annual_report_fee |
number | Recurring annual report fee. |
annual_report_cadence |
string | One of annual, biennial, decennial, annual-info-only, none. |
franchise_tax_year_one |
number | First-year minimum LLC franchise/privilege tax (USD). |
franchise_tax_ongoing |
number | Ongoing annual franchise tax minimum (USD). |
processing_days_standard |
number | Typical online processing time (business days). |
processing_days_expedite |
number | Expedited processing time (business days). |
expedite_fee |
number | Expedite fee (USD); 0 if not available. |
publication_required |
boolean | Whether newspaper publication is required (NY, AZ, NE only). |
publication_est_cost |
number|null | Estimated publication cost where required, USD. |
sos_url |
string | Canonical Secretary of State URL. |
last_verified_date |
string (YYYY-MM-DD) | Date the entry was last verified against the SOS. |
states.csv— flat CSV (recommended for analysis)states.json— original nested JSON
Per CC-BY-4.0, attribution is required when reusing the data:
Baidi, A. (2026). 2026 LLC Formation Cost Dataset. llcformationcost.com. Available at https://github.com/Ordertoai/us-llc-formation-fees. Licensed under CC BY 4.0.
The interactive calculator built on this data: https://llcformationcost.com
Each entry verified directly against the issuing state's Secretary of State
or DCRA/DLCP website. AI-sourced entries are tagged with verifiedSource: "gemini-grounded-search-{date}" in the original JSON. Re-verified
quarterly.
CC BY 4.0 — share + adapt freely, attribution required.