How to Run a Legal Online Giveaway (Rules + Winner Picker)

A giveaway is a wonderful way to grow an audience — and a surprisingly easy way to stumble into legal trouble if you run it carelessly. The difference between a smooth draw and a mess comes down to clear rules, a genuinely random winner, and a record you can show if anyone asks. Here is how to get all three.

Write the rules before you collect a single entry

• Who can enter — age, residency, and any exclusions (employees, family).
• How to enter — the exact action required, and whether purchases are necessary.
• Entry window — clear start and end dates with a time zone.
• The prize — what it is, its approximate value, and any conditions.
• How and when the winner is chosen and notified.
• How the winner will be announced publicly.

Mind the "prize, chance, consideration" trap

In many jurisdictions, an illegal lottery is defined by three things together: a prize, selection by chance, and consideration (something of value required to enter, usually money). If you require a purchase to enter, you generally must also offer a free entry route of equal chance — the classic "no purchase necessary." When in doubt, keep entry free, or check the rules for your country or state before launching.

Picking a winner you can prove is fair

1. Collect every valid entry into one list, removing duplicates if your rules limit one per person.
2. Number the entries or list the names.
3. Use a verifiable random picker or numbered draw to select the winner — ideally recorded or done live.
4. Announce the winner publicly and keep a record of the draw.
5. Have a runner-up ready in case the winner cannot be reached.

Make the draw transparent

Trust is the whole point. Spin the wheel or run the number draw on camera or in front of your entrants, so the selection is visibly random and cannot be accused of being rigged. A cryptographically-seeded, browser-based picker that stores nothing gives you a result you can stand behind.

Common mistakes to avoid

• Vague or missing rules, which invite disputes.
• Requiring payment without a free entry alternative.
• Picking a winner privately with no record.
• Not following your own stated rules.
• Ignoring platform-specific rules (Instagram, TikTok and others have their own promotion policies).

This guide is general information, not legal advice. Prize-draw and sweepstakes law varies by country and state, so for anything of significant value, have a local professional review your rules first.