A senior tax manager's primary responsibilities are to supervise a team of other tax professionals and complete a variety of additional tax-related duties for a company. In this career, you are responsible for overseeing internal audits, developing and maintaining company tax policies, and ensuring the business is in compliance with relevant tax codes on local, state, federal, and even international levels. Some senior tax managers still work one-on-one with clients, but the client is typically a larger or more complex one than they worked with at lower levels. In addition to these responsibilities, you also document after-tax revenue payments, deductions, and other expenses.