Illinois Fertilizer & Chemical Association
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IDOR Sales Tax Exemption Certificate – Equipment (Form ST-587)

This form is used to claim a sales tax exemption on qualifying equipment purchases in Illinois. This may include items such as ammonia tanks, nurse tanks, and certain application equipment or trailers, provided they meet the requirements for exempt use.
 
Complete this form and provide it to the seller at the time of purchase to document the exemption. The seller is required to keep the certificate on file as proof that no sales tax was charged.
 
This certificate may be used for:
  • Single purchases, or
  • Blanket certificates covering multiple purchases from the same vendor
Proper completion is important to ensure compliance with Illinois Department of Revenue requirements.