Why does Coinbase ask for your SSN and ID?

Coinbase asks for your Social Security number and a photo ID for two broad reasons. Federal rules require it to know who its customers are, and it needs a valid tax number to report sales to the IRS. It also uses ID checks to stop someone else from taking over an account. This guide focuses on the identity side, and the tax number side is covered in can you buy crypto without a Social Security number.

Why does Coinbase need to verify my identity?

FinCEN's rule for money services businesses, 31 CFR 1022.210, says their anti-money laundering programs must include procedures for verifying customer identification. Coinbase's help center says it requires ID to comply with laws such as anti-money laundering rules, to prevent fraud and to make sure only the account owner can change payment details. Coinbase says customers may need to verify before using buy and sell features. The general idea is explained in what is KYC.

For the SSN specifically, Coinbase asks US customers to complete Form W-9, which certifies their name and taxpayer number. Coinbase says it uses this to report taxable activity accurately, and that the W-9 itself is not sent to the IRS.

Why does Coinbase need my ID?

In the US, Coinbase accepts a valid state-issued driver's license or ID card, and it lists US passports, green cards, military IDs and temporary paper IDs among the documents it does not accept. Uploads go through the app or website, not email. A selfie may also be requested for account recovery, such as after losing a two-step verification device.

Larger trades can trigger more checks. Coinbase says its policy requires a full name, home address and date of birth before certain large transactions go through.

Why is Coinbase asking for my ID again?

Coinbase says it may ask for verification at any time for security reasons or before account changes. Changing a legal name or country of residence also requires a new ID, from the current country. Separately, Coinbase periodically asks customers to confirm the personal information on file, saying financial regulations require accurate records. If that request is ignored, the account is restricted until it is completed, as covered in why is my Coinbase account restricted.

Scammers copy these requests. Coinbase advises acting on them only after signing in through its official app or site, not through email links.

Is it safe to give Coinbase your SSN and ID?

Coinbase says it limits staff access to ID data, runs background checks on employees and never sells or rents personal information. No company can rule out exposure, though. In May 2025 Coinbase disclosed that criminals had bribed overseas support agents to copy customer data, including names, addresses, the last four digits of SSNs and images of government IDs, affecting under 1% of monthly transacting users, Help Net Security reported. Coinbase said passwords, two-factor codes and private keys were not taken, but warned the data could fuel impersonation scams. Coinbase staff will never ask for a password, two-factor code or seed phrase.