[header] How to avoid selling alcohol to someone illegally [title] Apply for the necessary license. [step] All states require anyone who sells alcohol, either by the drink on premises or for off-premises consumption, to have the appropriate license. [substeps] If you are applying for a liquor license, you must meet personal eligibility requirements. 
Typically, you must be over 21 and not have been convicted of a felony or an alcoholic beverage or controlled substance offense. Bartenders and servers of alcoholic beverages may be required to complete state training or testing and have a state or local permit or license to serve alcohol.