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Income Taxes

  • Corporation
    The Illinois Income Tax is imposed on every corporation earning or receiving income in Illinois.
  • Exempt Organization
    The Illinois Income Tax is imposed on every exempt organization on its unrelated business taxable income as determined under Section 512 of the Internal Revenue Code, without any deduction for the tax imposed or the standard exemption.
  • Fiduciary (Trust and Estate)
    The Illinois Income Tax is imposed on every trust and estate earning or receiving income in Illinois or as a resident of Illinois.
  • Individual Income Tax (Sole Proprietorships)
    The Illinois Individual Income Tax is imposed on every individual earning or receiving income in Illinois.
  • Partnerships
    The Illinois Income Tax is imposed on every partnership earning or receiving income in Illinois.
  • Subchapter S (Small Business) Corporation
    The Illinois Income Tax is imposed on every corporation earning or receiving income in Illinois.