IRS Form W-9

Verify your W-9 form information

Form W-9 allows U.S. residents to provide and certify their Taxpayer Identification Number (TIN) or Social Security Number (SSN), name, address, and exemption from backup withholding to Coinbase.

Coinbase uses this information to report taxable income to the IRS when required. Ensuring this information is correct helps prevent tax reporting issues.

If the information you used to create a Coinbase account doesn’t match the information on your W-9 form, you’ll need to make corrections and submit your W-9 form for reverification.

Common reasons for reverification include:

  • Name mismatch – Your name must match the Social Security Administration (SSA) or IRS records, including suffixes (e.g., "Jr." or "III").

  • Incorrect TIN – Your TIN must match the SSA or IRS records.

Visit IRS.gov for more information, including how to contact the Social Security Administration.

To verify your address, legal name, and TIN/SSN on a W-9:

  1. Go to the Tax Center.

  2. Select Settings.

  3. In the Tax status section, select Verify your info.

  4. Submit your information and select Continue.

  5. Review the Confirm tax information page and select Agree. This will start the review process which can take up to 48 hours.

If you incorrectly enter any of your information, fill out the verification form again after the review period.

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