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STATE OF CONNECTICUT DEPARTMENT OF REVENUE SERVICES Form CT1120SI Supplemental Attachment (Rev. 12/02) (Part I, Schedule A) PART I Schedule A S Corporation Shareholder Information and Composite Return
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01
Read the instructions: Before filling out form CT-1120SI, it is essential to carefully read the instructions provided with the form. This will help you understand the requirements and provide accurate information.
02
Gather necessary information: Collect all the required information and documents that are needed to fill out the form. This may include details about your business income, deductions, credits, and other relevant financial information.
03
Provide business details: Start by providing basic information about your business such as legal name, employer identification number (EIN), address, and contact information.
04
Report income: Fill out the income section of the form, reporting your business income from various sources. This may include sales revenue, interest, dividends, rents, or any other income received by the business.
05
Claim deductions: Identify and claim any eligible deductions that your business qualifies for. These may include expenses related to the operation of the business, depreciation, employee benefits, or other allowable deductions.
06
Calculate taxable income: Subtract the total deductions from the reported income to calculate the taxable income of your business.
07
Determine tax liability: Use the provided tax tables or tax rate schedule to calculate the tax liability based on the taxable income of your business.
08
Fill out additional sections: Complete any additional sections or schedules that are relevant to your business. This may include reporting credits, alternative minimum tax, or other special circumstances.
09
Review and submit: Double-check all the information provided on the form for accuracy and completeness. Sign and date the form before submitting it to the appropriate tax authority.
10
Keep a copy: Make sure to keep a copy of the filled-out form CT-1120SI for your records in case of future audits or reference.

Who needs form ct-1120si?

01
Form CT-1120SI is required by S corporations that are subject to Connecticut state income tax.
02
S corporations are business entities that elect to pass corporate income, losses, deductions, and credits through to their shareholders. If your business operates as an S corporation in Connecticut, you will need to file form CT-1120SI.
03
Additionally, you may need to fill out form CT-1120SI if you have income from Connecticut sources, even if your business is not registered as an S corporation.
04
It is always advisable to consult a tax professional or refer to the official tax guidelines to determine if you specifically need to file form CT-1120SI based on your business structure and circumstances.
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Form CT-1120SI is the Connecticut Corporation Business Tax Return for S Corporations.
S Corporations doing business in Connecticut are required to file form CT-1120SI.
Form CT-1120SI must be filled out with information regarding the S Corporation's income, deductions, credits, and other relevant tax information.
The purpose of form CT-1120SI is to report the S Corporation's income, calculate the tax liability, and pay any taxes owed to the state of Connecticut.
Information such as total income, deductions, credits, and tax liability must be reported on form CT-1120SI.
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