Why Sweepstakes Must Disclose Odds (and Where to Find Them)

Sweepstakes odds disclosure is required by federal law for mailed promotions, and it’s expected by the Federal Trade Commission for every promotion regardless of format — so if you can’t find the odds, that’s information in itself.

Under the Deceptive Mail Prevention and Enforcement Act (Public Law 106-168, enacted December 12, 1999, codified at 39 U.S.C. § 3001), a mailed sweepstakes must publish the estimated odds of winning each prize, the quantity and estimated retail value of each prize, and whether payments are spread over time.

The FTC’s consumer guidance is blunter still: a legitimate sweepstakes has clear rules, a free way to enter, and a truthful statement of the odds. The agency also warns that it is illegal for anyone to ask you to pay to improve your chances of winning.

Here’s the honest headline. Most published odds are enormous numbers, and the biggest prizes are the longest shots of all. For scale, the official Mega Millions jackpot odds are 1 in 290,472,336, and Powerball’s are 1 in 292,201,338. Below, you’ll see exactly where the sweepstakes odds disclosure lives, what it means, and what it quietly leaves out.

What the sweepstakes odds disclosure rule actually requires

The federal mail statute is the most specific piece of law here. A sweepstakes mailing must include rules disclosing the estimated odds of winning each prize, the nature and estimated retail value of each prize, how many of each will be awarded, and whether any prize is paid out over years rather than in a lump sum.

The same law requires a clear statement that no purchase is necessary to enter and that buying something will not improve your chances. That statement has to appear in the mailing, in the rules, and on the entry form. It’s the reason you see “NO PURCHASE NECESSARY” in capital letters everywhere.

Online and on-air promotions aren’t covered by the mail statute, but Section 5 of the FTC Act prohibits deceptive practices — and misstating or hiding the odds is deceptive. In practice, that pushes sponsors toward the same sweepstakes odds disclosure they’d have to make on paper.

The real numbers, side by side

Odds figures are easier to judge next to each other. Every number below comes from an official source, and one of them changed recently.

The Mega Millions change is a good example of why current figures matter. Lottery officials removed one gold Mega Ball in April 2025, which improved jackpot odds while the ticket price rose to $5 and the starting jackpot reset climbed to $50 million.

Where to find the sweepstakes odds disclosure on any promotion

Nearly every legitimate promotion buries its sweepstakes odds disclosure in the same handful of places. Once you know the pattern, it takes about thirty seconds to find.

• The Official Rules link. Usually at the bottom of the entry page, often as small text. Look for a section headed “Odds.”
• The abbreviated rules block. The dense paragraph starting “NO PURCHASE NECESSARY” near the entry form.
• The mailing itself. Federal law puts the disclosure in the mailing, in the rules, and on the entry form.
• Broadcast fine print. On-air giveaways typically point you to a rules URL.

HGTV’s Dream Home promotion is a typical case. Its official rules state that odds of winning depend on the number of eligible entries received, and the 2026 grand prize package was announced at a value of more than $2.4 million.

Why “odds depend on entries received” is a legitimate answer

That phrase frustrates people, but it’s mathematically honest. In a free-entry sweepstakes, the sponsor cannot know how many entries will arrive, so a fixed ratio would be a guess dressed up as a fact.

Instant-win and game-piece promotions are different. Because the sponsor prints a known number of winning pieces, the odds can be stated precisely — and typically are, prize tier by prize tier. That’s why a fast-food game piece carries a table of exact ratios while an online entry form does not.

A useful rule of thumb: if the sponsor controls the number of winning chances, expect a real number. If entrants control the denominator, expect the entries-received language. Both satisfy sweepstakes odds disclosure expectations.

What happens when a sponsor gets it wrong

Enforcement is real and occasionally expensive. In June 2023, the FTC announced an action against Publishers Clearing House over “dark patterns” that the agency alleged misled consumers about how to enter and whether buying something improved their chances. PCH agreed to a court order requiring $18.5 million in consumer payments plus detailed changes to its website design.

Importantly, PCH is a real company that awards real prizes — the FTC’s case concerned how entries were presented, not whether prizes existed. Separately, scammers impersonate PCH and other well-known brands by phone and mail. The FTC’s guidance is that real prizes are free, and that anyone demanding a fee for “taxes,” shipping, or processing is running a scam.

On the postal side, the Postal Service may assess civil penalties for violating mailings — statutorily $25,000 for a mailing under 50,000 pieces, scaling upward, with inflation-adjusted amounts published in the Federal Register (the 2023 adjustment set the low tier at $42,818).

What sweepstakes odds disclosure doesn’t tell you

The disclosure covers your chance of winning. It doesn’t cover what happens afterward, and that’s where surprises live.

Prizes are income. The IRS instructions for Form W-2G set regular withholding at 24% for winnings over $5,000 from sweepstakes, wagering pools and lotteries. How that applies to any individual depends on their situation — the IRS is the authority for your own case.

If you receive government benefits such as SSI, SNAP, Medicaid, or Section 8, reporting requirements generally apply to prizes and other income. Outcomes vary by program and by household, so contact the agency administering your benefits rather than assuming an answer.

The disclosure also won’t tell you the sponsor’s finances. That’s partly what state law addresses: New York and Florida generally require registration and a surety bond when a prize pool exceeds $5,000, so the money backing the prize is verified before entries open.

Frequently Asked Questions

Is a sweepstakes odds disclosure required for online promotions?

The federal mail statute applies specifically to mailings. Online, the FTC Act’s prohibition on deceptive practices governs, and the FTC’s guidance says legitimate sweepstakes include a truthful statement of the odds. Most sponsors disclose either way.

Why do the rules say odds depend on entries received?

Because in a free-entry drawing the sponsor genuinely doesn’t know the total until entry closes. Fixed odds appear in instant-win and game-piece promotions, where the number of winning chances is printed in advance.

Does buying something improve my odds?

No. Federal law requires mailed sweepstakes to state that no purchase is necessary and that a purchase won’t improve your chances. The FTC says it’s illegal for anyone to ask you to pay to increase your odds.

Are lottery odds and sweepstakes odds the same thing?

No. Lotteries require a paid ticket and publish fixed odds — currently 1 in 290,472,336 for the Mega Millions jackpot and 1 in 292,201,338 for Powerball. Sweepstakes must offer a free entry method.

Know the Rules Where You Live

Sweepstakes and prize rules change from state to state — what a sponsor can offer, how prizes are handled, and what protections you have. Pick your state to see the exact rules that apply where you live.

See Sweepstakes Laws in All 50 States →

Sources & How to Verify

The facts on this page are drawn from official government and primary sources. Rules and figures change, so always confirm the current details with the official agency or the promotion’s own published rules.

• FTC Consumer Advice: consumer.ftc.gov — prize, sweepstakes, and lottery scam guidance
• IRS: irs.gov — how prizes and winnings are treated as income
• Social Security Administration: ssa.gov — what SSI recipients must report
• The promotion’s official rules: every legitimate sweepstakes publishes them — the rules page is always the final word

Content last reviewed August 2026. If you notice outdated information, please contact us.

Related Guides

• Sweepstakes Laws by State (50-State Guide)
• More in This Category
• Sweepstakes Resources
• Scam Checks
• Sweepstakes Tax Calculator
• All Active Sweepstakes

Informational only — not legal, tax, or financial advice. Win Big Daily is an independent educational resource. Prize rules, tax treatment, and benefit-program requirements vary by state and program and change over time, so always verify the current details with the official agency, the promotion’s published rules, or a qualified professional before acting. If a topic involves government benefits, contact the program office about your specific situation.