To generate a tax withholding certificate, log in to your account and click on 'My Profile' > 'My Reports'. Choose the tax year for which you want to generate the report and click the button to generate the certificate. At this point, a tax withholding certificate will be sent to you by email in PDF format, similar to Form 867.
A new report is generated annually at the end of March. The data in the report refers only to sales transactions made in the 'closed loop' in the managed cold wallet.