You may need or want to notify the IRS using more than one of these methods. IRS Form 990-series return. Written notice. IRS Form 1128, Application to Adopt, Change, or Retain a Tax Year. Call the IRS.
If the organization changed its year-end within the past 10 years, then it must file Form 1128 with the IRS to change it again. Organizational documents. Sometimes a not-for-profit's fiscal year is established in its bylaws.
File Form 3115 to request a change in either an overall accounting method or the accounting treatment of any item.
File Form 1128 to request a change in tax year. Partnerships, S corporations, personal service corporations (PSCs), or trusts may be required to file the form to adopt or retain a certain tax year.
Changing your tax year Once you have adopted your tax year, you may have to get IRS approval to change it. To get approval, you must file Form 1128 PDF. See the instructions for Form 1128 PDF for exceptions.
More In Forms and Instructions File Form 1128 to request a change in tax year.