The federal income tax filing deadline for calendar-year partnerships, S corporations and LLCs treated as partnerships or S corporations for tax purposes is March 15, about a month earlier than the deadline for personal returns. If you haven’t filed your partnership or S corporation return yet, you may be thinking about an extension. An extension can be tax-smart if you’re missing critical documents or an unexpected life event is preventing you from devoting sufficient time to your return now. But there are additional considerations. Contact us to learn more about your filing requirement, 314-727-3700.