The CT-1040 form is the backbone for filing Connecticut resident income tax returns, guiding filers through the process of reporting income, calculating taxes owed, and understanding possible credits and deductions specific to Connecticut for the tax year of January 1 to December 31, 2009. The form is meticulously structured, offering sections for personal information, income declaration, adjustments to federal adjusted gross income, and culminating in the tax computation. It emphasizes the necessity for accuracy in declaring income and taxes paid to other jurisdictions, property tax credits, individual use tax, and even contributions to designated charities. Besides the core income report, the form incorporates schedules for modifications to income, crediting taxes paid to qualifying jurisdictions, property tax credits, individual use tax obligations, and voluntary contributions. Filers must vigilantly sign the declaration on the reverse side to attest to the truthfulness of the data provided. Additionally, specific instructions on the form guide taxpayers on securely attaching supplementary documents, such as W-2s or 1099s, ensuring the Connecticut Department of Revenue Services receives a comprehensive package for processing. With options for electronic filing highlighted for quicker refunds, the CT-1040 form represents a crucial document for Connecticut residents in fulfilling their state tax obligations.