In practice, the most reliable way to verify requirements is to use official public databases. Here's a simple checklist:

• FDA Tobacco Retailer Registration: This is your federal baseline. Make sure your registration is active.
• State Tobacco Control Board: Look up your state's specific retail license requirements for vape products.
• Local Business License Portal: Check your city or county for additional permits or zoning restrictions.
• State Revenue Department: Some states require a sales tax permit, which is separate from the tobacco license.

Keep copies of all your licenses and renewal dates in one place. If you have multiple locations, track each one separately.