Illinois General Assembly

  Bills & Resolutions  
  Compiled Statutes  
  Public Acts  
  Legislative Reports  
  IL Constitution  
  Legislative Guide  
  Legislative Glossary  

 Search By Number
 (example: HB0001)
Search Tips

Search By Keyword

Illinois Compiled Statutes

 ILCS Listing   Public Acts  Search   Guide   Disclaimer

Information maintained by the Legislative Reference Bureau
Updating the database of the Illinois Compiled Statutes (ILCS) is an ongoing process. Recent laws may not yet be included in the ILCS database, but they are found on this site as Public Acts soon after they become law. For information concerning the relationship between statutes and Public Acts, refer to the Guide.

Because the statute database is maintained primarily for legislative drafting purposes, statutory changes are sometimes included in the statute database before they take effect. If the source note at the end of a Section of the statutes includes a Public Act that has not yet taken effect, the version of the law that is currently in effect may have already been removed from the database and you should refer to that Public Act to see the changes made to the current law.

50 ILCS 45/30

    (50 ILCS 45/30)
    Sec. 30. Statute of limitations. Units of local government have an obligation to review tax returns in a timely manner and issue any determination of tax due as promptly as possible so that taxpayers may make timely corrections of future returns and minimize any interest charges applied to tax underpayments. Each unit of local government must provide appropriate statutes of limitation for the determination and assessment of taxes covered by this Act, provided, however, that a statute of limitations may not exceed the following:
        (1) No notice of determination of tax due or
    
assessment may be issued more than 5 years after the end of the calendar year for which the return for the period was filed or the end of the calendar year in which the return for the period was due, whichever occurs later. An audit or review that is timely performed under Section 35 of this Act or Section 8-11-2.5 of the Illinois Municipal Code shall toll the applicable 5-year period for a period of not more than 1 year.
        (2) If any tax return was not filed or if during
    
any 4-year period for which a notice of tax determination or assessment may be issued by the unit of local government the tax paid or remitted was less than 75% of the tax due for that period, the statute of limitations shall be no more than 6 years after the end of the calendar year in which the return for the period was due or the end of the calendar year in which the return for the period was filed, whichever occurs later. In the event that a unit of local government fails to provide a statute of limitations, the maximum statutory period provided in this Section applies.
    (3) The changes to this Section made by this amendatory Act of the 102nd General Assembly do not revive any determination and assessment of tax due where the statute of limitations has expired as of the effective date of this amendatory Act of the 102nd General Assembly, but the changes do extend the statute of limitations for the determination and assessment of taxes where the statute of limitation has not expired as of the effective date of this amendatory Act of the 102nd General Assembly.
    This Section does not place any limitation on a unit of local government if a fraudulent tax return is filed.
(Source: P.A. 102-1144, eff. 3-17-23.)