[E-file Error Code F990N-901-01] How do I resolve it?
8.6k views | Last modified 3/29/2022 2:32:42 AM EST | Added by ExpressTaxExempt Team

Applicable To
990-PF 990-N 990-EZ 990 8868 1120-POL

IRS Error Code [F990N-901-01]:

If Form 990-N, checkbox "Termination" is not checked, then the Tax Period End Date in the Return Header must match data in the e-file database. 

Rejection Message:

The IRS has rejected your return since the tax period end date in the return filed doesn't match the IRS e-file database.

What does it mean:

The tax period end date in the return is incorrect. For instance, if your organization follows a calendar tax year, the tax period end date in the return should be December 31. On the other hand, if your organization follows a fiscal tax, let's say from April through March, in which case, the tax period end date would be March 31. If the return has an end date other than March 31, the IRS will reject it. 


You need to check the tax period's start date and end date. Refer to this list of documents to confirm your organization's tax period.

Here's how you correct the tax period on your return:

  1. Log in to your ExpressTaxExempt account.
  2. Identify the rejected return either from the Dashboard or Forms History.
  3. To identify it from the Dashboard, keep a note of the rejected return's Return ID that you find in the rejection email. 
  4. To identify it from the Forms History page, click the Tax Returns on the menu, and you'll land on the Forms History page, where you'll find the rejected return listed. 
  5. In both options, you need to click on the Rejected by the IRS button found against the rejected return to find the list of errors. Then, click the Fix Me button against the error code F990N-901-01. 
  6. You'll land on the Tax Year page. Here you can correct the Tax Year End Date.
  7. Review the details, and click the Transmit button to re-transmit your return to the IRS at no additional cost.

We'll keep you informed on the return status once we hear back from the IRS.

For any further assistance or clarifications such as IRS rejections for tax period end date despite the correct tax period from your end, we recommend contacting the IRS e-Help Desk Toll-Free Number 1-866-255-0654.

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