September 15th filing deadlines

Some think that tax season only happens in April…but that's not really true. April is tax refund season. Right now, September to October, is the real tax season. When those who owe substantial taxes have submitted their tax returns.


As we approach September 15th, there are IRS forms due if you filed for an extension on them. It's always important to remember that the extension technically only applies to the filing of the form. The anticipated tax amount should still be paid, and if it is not then interest is charged on any taxes paid late.


IRS Forms due September 15th

  • Form 1120: US Corporation Income Tax Return
  • Form 1120-S: U.S. Income Tax Return for an S Corporation
  • Form 1120-C: U.S. Income Tax Return for Cooperative Associations, is used by cooperatives for tax returns.
  • Form 1120-F: U.S. Income Tax Return of a Foreign Corporation
  • Form 1120-H: U.S. Income Tax Return for Homeowners Associations, is used by condominium and housing associations for tax returns
  • Form 1120-FSC: U.S. Income Tax Return of a Foreign Sales Corporation
  • Form 1065: US Return of Partnership Income
  • 3520-A Annual Information Return of Foreign Trust With a U.S. Owner…but not Form 3520!


Bear in mind it is also the deadline for 3rd quarter estimated taxes.


If you need any assistance with tax filing or if you have an IRS issue, don't hesitate to contact us. You can call us at 888-727-8796 or email us at info@irsmedic.com.


IRSMedic.com is the website for Parent & Parent LLP, a tax law firm of IRS resolution attorneys, Certified Public Accountants, and Enrolled Agents who want to be the team that permanently resolves your tax problem where others have failed. We have developed a proven system of solving any tax problem in the least amount of time, for the smallest amount of headache. We serve US taxpayers worldwide for IRS, US Tax Court and state revenue agency issues.