As a senior tax accountant, you collect, review, and process accounting and tax documents to prepare tax returns, state pages, and tax provision schedules, estimate quarterly payments, and file extensions. You gather financial information and file federal, state, and local tax returns for businesses and individuals. You also assist the tax manager in responding to IRS and other notices received by clients. Other duties include coaching junior tax accountants and being aware of all compliance issues and deadlines for extensions, tax estimates, required filings, and more. You must research more complex tax concepts and strategies to improve each client’s tax strategy and communicate your findings and ideas with them.