Do survey sites need your Social Security number?
Most don't ask for it up front. US companies must report what they pay you to the IRS once it reaches $2,000 in a year (the threshold was $600 before 2026), so they ask for tax information, a W-9 with your SSN, as your payouts approach that level. Some ask sooner: InboxDollars's terms ask once payouts pass $300. Branded Surveys and Opinion Outpost ask at about $2,000.
Which survey apps make you verify your ID?
More and more of them, to stop fraud. Freecash asks for a photo ID and selfie on your first withdrawal; Branded Surveys, Opinion Outpost and Valued Opinions may ask through Veriff; JustPlay and Testerup use a face scan. Expect some kind of check before your first cash-out.
Is it safe to give a survey site my SSN?
Only give it to the company itself, on its own website or app, and only when it asks for tax reporting. Never give it to someone who contacts you about a survey, and never pay a fee to join. Legitimate survey sites are free.