Where can I find out more information about Form ST-556, Sales Tax Transaction Return, and ST-556-LSE, Transaction Return for Leases?

For information about Form ST-556 and Form ST-556-LSE, see the instructions to these forms; ST-9, A Guide for Reporting Sales Using Form ST-556, Sales Transaction Return; STS-76, Illinois Aircraft/Watercraft and Vehicle Use Tax Guide; or Illinois Administrative Code, Title 86, Section 130.540.

If you have additional inquiries, you may submit them to the Questions, Comments, or Request form.