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Fix tax-filing mistakes with form l040X (Amended US Individual Income Tax Return]. The simple form allows you to correct a mistake going back up to three tax years. It asks how much adjusted gross income you reported before ... what you are now reporting... and how much the number has changed. 

Welcome to Koifman CPA and Associates

At Koifman, CPA & Associates, we believe in individualized, detailed and comprehensive relationship between you, the client, and us, your accounting and tax professionals. We pay attention to details and your personal needs to ensure you unsurpassed professional service and guidance.

Points of Interest


Extension procedures and filing due dates for business entity taxpayers:

  • Electronically filed tax returns are accepted until September 15 and October 15th depending on your type of entity. Calendar year end corporations (including S-Corps) will be due September 15. LLCs and partnership tax returns will be due October 15.
  • If September or October15th falls on a weekend or federal holiday, you have until midnight the following business day to submit your extension request or your tax return.
  • However, for your return to be considered timely after March or April 15, you must file Form 7004Application for Automatic Extension of Time To File Certain Business Income Tax, Information, and Other Returns on or before March or April 15th, again depending on the type of entity.
  • With a timely filed extension request, you have until September or October 15th to timely file your return, depending on the type of entity.
  • If an extension of time to file has not been timely submitted you may be subject to a failure to file penalty if your return is filed after March or April 15th, depending on the type of entity.