Here are the business taxes and due dates for those taxes which must be reported and paid in October. 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.

1. October 15 - File Your Non-corporate Income Tax Return (if you extended)

If you are filing your business income tax along with your personal tax return, you may have filed a request for an extension. 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.More »

2. October 15 - Make Your Monthly Payroll Tax Deposit for September

If you make your payroll tax deposits according to the monthly rule, you must deposit payroll taxes for September no later than October 15.More »

3. October 15 - File Form 5500 for ERISA (if you extended)

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.More »

4. October 31 - Pay Federal Excise Taxes

Federal excise taxes must be reported and paid quarterly. The third quarter report/payment is due October 31.More »

5. October 31 - Deposit FUTA Taxes Owed for September (if $500 or more)

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.More »

6. October 31 - File Form 2290, Pay Tax for Heavy Vehicles Purchased in September

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.More »