The short answer

Legal in almost every US state. Sweepstakes casinos operate under federal sweepstakes promotion law, which is distinct from gambling law. Because they always provide a free method of entry — usually via mail or online form — they are classified as promotional sweepstakes rather than gambling.

States with restrictions

A handful of states have either banned sweepstakes casinos outright or pressured operators to withdraw. As of June 2026, the following states have limited or no sweepstakes casino availability:

• Washington — most operators have withdrawn voluntarily due to broad state gambling statutes.
• Idaho — restrictive promotional sweepstakes law has pushed many brands to exclude residents.
• Michigan — partial restrictions; available, but some brands and prize methods are limited.
• Nevada — many brands exclude residents to avoid conflict with the state’s licensed casino industry.

If you live in one of these states, check each operator’s terms of service before depositing. Brands frequently update their accepted-states list.

Why this is not “grey market” gambling

Real-money online casinos require a gambling licence in each US state they operate in. As of 2026, only seven states have legalised real-money online casino play. Sweepstakes casinos avoid that licensing question entirely by structuring themselves as promotional sweepstakes — a model that has been used in US marketing for almost a century.

Tax considerations

Prize redemptions from sweepstakes casinos are generally treated as gambling income for federal tax purposes once you cross the IRS reporting threshold (currently $600 per redemption). Most operators will issue a 1099-MISC for redemptions above that level. Consult a tax professional for your specific situation.

Age requirements

The minimum age is 18 at most brands, though some require 21 in states with higher gambling-age laws. We list the exact age requirement in every review.