Updated July 1, 2025

A 3D topographic rendering of the state of Illinois in textured green, yellow, and brown hues, resting on a warm brown background. Bold white block letters across the lower half spell “ILLINOIS CANNABIS TAX GUIDE,” partially overlapping the map’s raised contours. The lighting creates soft shadows around the map and text, emphasizing the elevation details.

Key Points for Cannabis Retailers

  • Cultivation Privilege Tax – Cultivators owe 7 % of gross receipts on the first wholesale sale of both adult‑use and medical cannabis (per ounce for medical).

  • Purchaser Excise Tax – Dispensaries must collect a tiered excise tax at retail on adult‑use products:

    • 10 % on flower/concentrates with THC ≤ 35 %

    • 25 % on flower/concentrates with THC > 35 %

    • 20 % on all cannabis‑infused products (edibles, beverages, etc.)

  • Medical Cannabis – No purchaser excise tax on medical sales. Cultivation privilege tax still applies.

  • Sales (Retailers’) Occupation Tax

    • Adult‑Use – 6.25 % state rate + any local general merchandise ROT.

    • Medical – 1 % state ROT, generally exempt from locally imposed cannabis‑specific occupation taxes (except certain transit districts).

  • Local Cannabis‑Specific Taxes (Adult‑Use only) – Municipalities may add up to 3 %; counties up to 3.75 % in unincorporated areas (3 % inside municipalities).

Understanding Illinois’ Cannabis Tax Structure

280E Decoupling

Illinois fully decoupled from federal IRC §280E for state income tax in January 2023, allowing the deduction of ordinary business expenses (rent, payroll, marketing) on state returns.

Illinois Tax Overview

  • Excise Tax – 7 % cultivation privilege + tiered purchaser excise (10 / 20 / 25 %).

  • Sales/Retailers Occupation Tax – 6.25 % state ROT; adult‑use also subject to local general ROT + cannabis‑specific ROT.

  • Medical – Exempt from purchaser excise; pays 1 % state ROT only. Documentation (registry card) required at point of sale.

Cannabis Excise Tax: What Retailers Need to Know

Product Type State Cultivation Tax Retailer Excise Tax Applies to Medical?
Adult‐use flower/concentrates ≤ 35 % THC 7 % of wholesale 10 % of retail price No
Adult‐use flower/concentrates > 35 % THC 7 % of wholesale 25 % of retail price No
All cannabis‑infused products 7 % of wholesale 20 % of retail price No
Medical cannabis 7 % of wholesale 0 % Yes

Cultivation tax is remitted by cultivators on first sale; purchaser excise remitted by dispensaries.

Sales / Gross Receipts Tax: Local Impact on Cannabis

  • State Rate – 6.25 % on adult‐use; 1 % on medical.

  • Municipal Cannabis Retailers’ Occupation Tax (up to 3 %).

  • County Cannabis Retailers’ Occupation Tax (up to 3.75 % unincorporated; 3 % inside municipalities).

  • Chicago Example: 3 % cannabis retail tax + 6.25 % state + any city general sales tax.

Note: Springfield and many downstate jurisdictions do not currently impose a cannabis‑specific tax; always verify via MyTax Illinois Tax Rate Finder.

Filing & Payment Deadlines

Tax Type Filing Frequency Due Date
Cultivation Privilege Monthly (cultivators) 20th of following month
Purchaser Excise Monthly (dispensaries) 20th of following month (Form CD‑1)
Sales/ROT (Form ST‑1) Monthly or Quarterly 20th of following month/quarter
State Income Tax Annually April 15, 2026

All cannabis tax returns must be e‑filed via MyTax Illinois.

Key Illinois Cannabis Trade Associations

Illinois Government Contacts

Illinois Department of Financial and Professional Regulation (IDFPR)
Division of Cannabis Regulation
555 W. Monroe St, Suite 500, Chicago, IL 60661
General: (872) 814‑1770 | fpr.medicalcannabis@illinois.gov

Illinois Department of Revenue
Administers: Retailers’ Occupation Tax, Cannabis Cultivation Privilege Tax, Cannabis Purchaser Excise Tax

Important Legal Notice
This guide is for informational purposes only and is accurate as of July 1, 2025. Tax laws and rates may change—always consult a licensed tax professional or the Illinois Department of Revenue for the latest information.