Difference between Tolling Agreement and a Purchase Agreement

Tolling Agreements:

  • Customer retains ownership of product
  • ONEOK processes transmix for a set fee per gallon
  • Processing time is less than 45 days
  • Finished products are allocated at Fractionator location
  • Customer has option of re-consigning product
  • Product price risks are retained by Customer

Purchasing Agreements:

  • Customer sells the product to ONEOK
  • ONEOK purchases transmix for a set discount per gallon to index
  • Product price risks are assumed by ONEOK


Transmix Processing Services

Whether you have a mix-load trailer or need monthly transmix processing services, ONEOK can meet your needs. 

Use the links below for additional information or key documents.

Contact: Email transmix@oneok.com with any questions.