Here are the business taxes and due dates for those taxes which must be reported and paid in October. For 2011, October 15 taxes are due October 17, because October 15 is a Saturday.
This calendar shows the monthly deposit date for payroll taxes. If you have a large payroll, you should make payroll tax deposits according to the semiweekly deposit rule; these dates are not shown on this calendar. If you are not sure when to make payroll tax deposits, read this article on how to determine your payroll tax deposit schedule.
If you are filing your business income tax along with your personal tax return, you may have filed a request for an extension. Well, that extension runs out on October 15 and your tax return is due by this date. This deadline applies to sole proprietorship, single-member LLC and partnership filings.
If you make your payroll tax deposits according to the monthly rule, you must deposit payroll taxes for September no later than October 15.
Form 5500 (the Annual Report/Return of Employee Benefit Plan) is due 7 months after the end of your plan year. For calendar year plans, the due date is thus July 31. If you requested an extension of time to complete this form, the extension runs out October 15.
Federal excise taxes must be reported and paid quarterly. The third quarter report/payment is due October 31.
If you owe more than $500 in federal unemployment (FUTA) taxes for the quarter ending September 30, you must deposit the taxes owed by the end of October. In 2009, the last day of October is a Saturday, so you do not have to make the deposit until Monday, November 2.
If your business purchased a heavy truck (taxable vehicle weight of 55,000 pounds or more) in September, you must file Form 2290 and pay an annual vehicle tax by the end of October. Since October 31 is a Saturday in 2009, you have until Monday, November 2, to file and pay this tax.