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Federal Extension or Waiver
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For Corporation Franchise Tax
If you grant the Internal Revenue Service an extension to re-compute your federal corporation income tax (using Form 872), this also extends the allowable time for the Minnesota Department of Revenue to re-compute your Minnesota tax. (See Minnesota Statute 289A.42.)
The department has six months after the expiration of your federal extension or waiver to re-compute your state Corporation Franchise Tax.