The minimum legal age to purchase electronic cigarettes (e-cigs) in the United States is federally mandated.
Federal Minimum Age
21 years old is the baseline age requirement nationwide. This standard was established by federal law (Tobacco 21 or T21) enacted in December 2019. It applies to all retailers across the country, including online sales.

State Variations
While the federal age is 21, state laws may have specific nuances, exceptions (largely grandfathered pre-T21), or stricter enforcement details:
- States Enforcing Only Federal Minimum (21): The vast majority of states enforce the federal minimum age of 21 without additional state-level variation for purchasing age. Retailers must adhere to 21+.
- States with Historical Lower Limits (Now Superseded): Before the federal law, many states had a minimum age of 18 or 19. These state laws are superseded by the federal standard but may still technically exist on state books for other tobacco products or different contexts. Enforcement for e-cig purchases follows federal law (21+).
- Territories: U.S. territories like the U.S. Virgin Islands align with the federal minimum age of 21.
- Tribal Lands: Age restrictions on Native American tribal lands may vary depending on specific tribal law, though many adhere to federal or surrounding state standards.
Critical Considerations
- No Lower Age: No state allows purchasing e-cigs under the age of 21 due to the federal law.
- Enforcement: Enforcement primarily targets retailers selling to anyone under 21. Penalties for retailers and sometimes underage buyers can apply at both federal and state levels.
- Other Restrictions: Many states impose additional restrictions beyond age, such as licensing requirements for sellers, taxation, bans on flavored products, or specific marketing rules.
- ID Verification: Retailers are required to verify age using valid identification.
In summary: You must be at least 21 years old to legally purchase e-cigarettes anywhere in the United States due to federal law, regardless of prior state age limits.