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As a service to our clients, we'll keep this page current on all critical due dates related to small business and personal taxes, as well as other important financial activities.
Calendar & Due Dates
July 31, 2008 Annual 5500 Return/Report deadline for business retirement plans without extensions.
September 15, 2008 Corporate Tax return due. If you extended the due date of your 2007 corporate income tax return, Form 1120 or 1120S is due September 15, 2008.
Estimated tax payment. Your third-quarter estimated tax payment for 2008 is due.
State tax returns. If you are required to file a state tax return, it is probably due -- but check with your state to be certain. Many states automatically extend the filing time to those who have filed for a federal extension.
October 1, 2008 SIMPLE IRA: Deadline for establishing a SIMPLE IRA
October 15, 2008 Final extensions for partnerships and certain LLCs: Final extensions for partnerships and certain LLCs (Form 1065) expire.
Tax return due. If you extended the due date of your 2008 individual income tax return for six months, Form 1040 is due October 15, 2008.
December 31, 2008 Deadline to convert traditional, SEP or SIMPLE IRA to Roth IRA taxable in 2008.