Amended Returns
How to Amend Your Return
If a taxpayer discovers that an original return contains an error in the computation of income or franchise tax, an amended return should be filed. The statute of limitations for filing an amended return is three years from the date the return was filed or was required by law to be filed, whichever is later.
Use form CD-405 or CD-401S to amend your return.
Federal Revenue Agent's Report
If the amount of taxable income of any corporation subject to tax in this state, as reported or reportable to the United States Treasury Department, is changed by the U.S. Government, such corporation must file an amended return under oath reflecting such change within two years after receipt of the Federal report.
For federal determinations made on or after July 1, 2006, the time period for reporting the federal correction or determination is six months.