• Ensure accurate application of backup withholding and NRA withholding rates on reportable transactions • Monitor and ensure timely withholding tax deposits in accordance with IRS requirements • Reconcile withholding tax liabilities and support preparation of Form 945 and Form 1042 • Monitor withholding rate changes and coordinate system updates accordingly • Track and respond to IRS notices including B-notices, C-notices, and withholding tax assessments • Support withholding tax audits and tax authority requests • Research and analyze U.S. withholding tax developments and assess impact on Coinbase operations • Identify and implement improvements to withholding tax processes and procedures • Respond to inquiries from product, onboarding, and customer support teams regarding U.S. withholding tax requirements • Partner with product and data teams on system requirements and business rules for withholding tax processes • Support customer service teams through internal education and customer escalations related to withholding tax • Coordinate across departments including product, data analytics, onboarding, customer service, and communications