Form 100s 2026

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  1. Click ‘Get Form’ to open it in the editor.
  2. Begin by entering the taxable year at the top of the form. Ensure you select the correct year for your filing.
  3. Fill in your California corporation number and FEIN (Federal Employer Identification Number) in the designated fields.
  4. Provide your corporation name and address, including suite or room numbers, city, state, and ZIP code.
  5. Answer Schedule Q questions regarding your corporation's status, such as if it is a final return or has undergone any significant changes during the year.
  6. Complete sections related to income and deductions. Use Schedule F for trade or business income calculations and ensure all figures are accurate.
  7. Review all entries for accuracy before submitting. Utilize our platform’s features to save your progress and make edits as needed.

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