Non-profit vendors participating in Arkansas tradeshows must comply with several sales tax requirements. They need to register for a sales tax permit with the Arkansas Department of Finance and Administration (DFA). During the event, they are responsible for collecting sales tax on all taxable tangible personal property sold. If eligible, non-profits can claim sales tax exemptions by providing proper documentation, such as exemption certificates. Additionally, non-profit vendors must adhere to filing and remittance schedules based on their assigned frequency (monthly, quarterly, or annually). Accurate record-keeping and timely compliance with reporting deadlines are crucial to avoid penalties and ensure adherence to Arkansas’s sales tax regulations.