Tax profile completion sat at 5.6% among U.S. drivers and couriers, despite being mandatory for IRS 1099 reporting. Uber already had the data it needed — legal name, SSN, address — but only SSN carried into the form, and validation ran offline after submission with no way to catch a mismatch before it became a support ticket or a $180 penalty Uber had already absorbed once. I redesigned the flow to auto-fill known data, validate inline, and prompt review proactively — turning a legal obligation nobody understood into a guided path earners could complete correctly in one sitting.