Important Dates & Deadlines

August 2, 2010

• Employers
  • File Employer's Quarterly Federal Tax Return, Form 941, for the second quarter of 2010. Deposit any un-deposited tax. (If the total is less than $2,500 and not a shortfall, you can pay it when the return is filed.) Also file and pay any state taxes.
• Pension and Profit Sharing Plans
  • File Return/Report of Employee Benefit Plan, Form 5500-C/R, or apply for extension for time to file, for calendar year 2009 with IRS.

August 15, 2010

• Corporations and S-corporations (years ending May 31, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due September 15, 2010, November 15, 2010, February 15, 2011 and May 16, 2011, of your tax for the next fiscal year. If extended, the federal return will be due February 15, 2011, California due March 15, 2011.

September 15, 2010

• Individuals
  • Pay third installment of estimated income tax for 2010, accompanied by Form 1040-ES, Estimated Income Tax for Individuals and/or Form 540-ES. Check this site for electronic payment requirements.
• Corporations and S-corporations (years ending June 30, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due October 15, 2010, December 15, 2010, March 15, 2011 and June 15, 2011, of your tax for the next fiscal year. If extended, the federal return will be due March 15, 2011, California due April 15, 2011.
• Trusts
  • Pay third installment of estimated tax for 2010, accompanied by Form 1041-ES and/or Form 541-ES.
  • If extended, file U.S. Income Tax Return for Estates and Trusts, Form 1041, for 2009 with IRS and pay any tax, penalty and interest due.
• Partnerships
  • If extended, file U.S. Partnership Return of Income, Form 1065, for 2009 with IRS.

October 15, 2010

• Individuals
  • If extended, file U.S. Individual Income Tax Return, Form 1040, for 2009 with IRS and Franchise Tax Board and pay any tax, penalty and interest due.
• Employers
  • If extended, file Annual Return/Report of Employee Benefit Plan, Form 5500, for 2009.
• Corporations and S-corporations (years ending July 31, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due November 15, 2010, January 18, 2011, April 15, 2011 and July 15, 2011, of your tax for the next fiscal year. If extended, the federal return will be due April 15, 2011, California due May 16, 2011.

October 31, 2010

• Employers
  • File Employer's Quarterly Federal Tax Return, Form 941 for the third quarter of 2010. Deposit any un-deposited tax. (If the total is less than $2,500 and not a shortfall, you can pay it when the return is filed.) Also file and pay any state taxes.

November 15, 2010

• Corporations and S-corporations (years ending August 31, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due December 15, 2010, February 15, 2011, May 15, 2011 and August 15, 2011, of your tax for the next fiscal year. If extended the federal return will be due May 16, 2011, California due June 15, 2011.

December 15, 2010

• Corporations and S-corporations (years ending September 30, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due January 18, 2011, March 15, 2011, June 15, 2011 and September 15, 2011, of your tax for the next fiscal year. If extended, the federal return will be due June 15, 2011, California due July 15, 2011.

January 15, 2011

• Individuals
  • Pay fourth installment of estimated income tax for 2010, accompanied by Form 1040-ES and/or Form 540-ES. Check this site for California electronic payment requirements.
• Corporations and S-corporations (years ending October 31, 2010)
  • File U.S. Corporation Income Tax Return, Form 1120, or U.S. Income Tax Return for an S Corporation, Form 1120S, or an application for extension of time to file, and pay the balance of the income tax, if any. California corporations are due the same day as federal. A worksheet, Form 1120-W, is available to help you determine estimates, which will be due February 15, 2011, April 15, 2011, July 15, 2011 and October 17, 2011, of your tax for the next fiscal year. If extended, the federal return will be due July 16, 2012, California due August 15, 2012.
• Trusts
  • Pay fourth installment of estimated tax for 2010, accompanied by Form 1041-ES and/or Form 541-ES.

January 31, 2011

• Employers
  • Give employees their copies of Wage & Tax Statements, Form W-2 and suppliers Form 1099 for 2010.
  • File Annual Return of Withheld Federal Income Tax, Form 945, to report income tax withheld for 2010 on all non-payroll items, including backup withholding and withholding on pensions, annuities, gambling winnings and payments of Indian gaming profits to tribal members. Deposit any un-deposited tax. (If the total is less than $2,500 and not a shortfall in prior payments, you can pay it when the return is filed.)
  • File Employer's Quarterly Federal Tax Return, Form 941, for the fourth quarter of 2010. Deposit any un-deposited tax. (If the total is less than $2,500 and not a shortfall in prior payments, you can pay it when the return is filed.) Also file and pay any state taxes.
  • File Employer's Annual Federal Unemployment (FUTA) Tax Return, Form 940 or 940-EZ for 2010. If your un-deposited tax is less than $100, you can either pay it with your return or deposit it. If it is more than $100, you must deposit it.

    Next...