Connecticut Forms
Find Connecticut state forms for tax, business, vehicle, employment, and other government filing workflows with fillable PDFs and source-backed form pages.
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Browse state-specific form pages for tax, business, vehicle, and government workflows. Each listing is filtered through DocuHub quality checks before it appears in indexable catalog pages.
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8 Connecticut Forms
Page 1 of 1
CT-1040 (Connecticut)(2024)
Connecticut Resident Income Tax Return
Connecticut resident individual income tax return. The primary form for Connecticut residents to file state income taxes.
CT-1040 EXT (Connecticut)(2024)
Application for Extension of Time to File
Connecticut application for extension of time to file individual income tax return.
CT-1040 TCS (Connecticut)(2024)
Tax Calculation Schedule
Connecticut tax calculation schedule used with Form CT-1040 to compute tax liability.
CT-1040NR/PY (Connecticut)(2024)
Nonresident/Part-Year Resident Income Tax Return
Connecticut nonresident and part-year resident income tax return for individuals who moved into or out of Connecticut during the tax year.
CT-1040X (Connecticut)(2024)
Amended Connecticut Income Tax Return
Connecticut amended income tax return for individuals who need to correct a previously filed CT-1040.
CT-W4 (Connecticut)(2024)
Employee's Withholding Certificate
Connecticut employee withholding certificate, the state equivalent of federal W-4. Used to determine Connecticut income tax withholding.
CT-W4NA (Connecticut)(2024)
Employee's Withholding Certificate - Nonresident Apportionment
Connecticut withholding certificate for nonresident employees who apportion income earned in Connecticut.
CT-W4P (Connecticut)(2024)
Withholding Certificate for Pension or Annuity Payments
Connecticut withholding certificate for pension, annuity, and other retirement distributions.