Connecticut Tax Forms - State Income Tax Return Guide

State Income Tax Forms for Connecticut

Connecticut is one of 41 states that collect a state income tax. If you are a full time, part-time or nonresident of Connecticut and filed a federal tax return, you must also file an individual tax return with Connecticut state.


State Income Tax Forms

Pertains To

Use These Forms If..

Individual Income Tax Return

Individual Income Earners

You earned any income in the state of CT as a full-time, part-time or nonresident.

Withholding Forms

Employers, Employees

You need to file or adjust a CT state withholding tax status.

Extension to File Requests

Individual Income Earners

You need an extension to file your state income taxes.

Estimated Income Tax Forms

Self-employed Individuals, Independent Contractors

You are required to pay monthly or quarterly estimated income taxes.

All State Income Tax Forms

Income Earners

You need to find any state income tax form applicable to Connecticut.


Property Tax Forms for Connecticut

Connecticut doesn’t collect property taxes at the state level. Property taxes are instead collected at the local level, by cities, counties and school districts. Connecticut offers property tax exemptions for veterans and the disabled exclusively; must file locally.


Property Tax Forms

Pertains To

Use These Forms If..

Homestead Exemption


No form to file. Connecticut does not offer traditional homestead exemptions.

Veterans Property Tax Exemption Forms

Veteran, Surviving Spouse Property Owners

You’re a veteran or veteran surviving spouse property owner living below a certain income level. Must file locally.

All Property Tax Forms

Home, Land, Property Owners

You own any property in CT, including a home, land or commercial real estate


All Other Tax Forms for Connecticut

Connecticut is one of 25 states that has a Vehicle Property Tax, which is filed locally. All Connecticut state specific tax forms, specialty forms and motor vehicle forms provided below.


All Other Forms

Pertains To

Use These Forms If..

Property Tax on Vehicles

Vehicle Owners

You own a vehicle in the state of Connecticut. Must file locally.

Sales Tax on Registrations

Buyer, Seller in Vehicle Transactions

You bought, sold or need to register a motor vehicle in Connecticut.

All Connecticut Tax Forms

Any Tax Filer

You need to find any tax form applicable to Connecticut.


Helpful Resources for Filing Connecticut Tax Forms

Connecticut offers installment agreements for help paying tax bills, income tax credits and official resources for understanding and filing local property tax forms. The main Connecticut tax form and instruction portal is also provided.


CT Filing Resources

Pertains To

Use This Resource If..

Installment Payment Agreement

Filers Unable to Pay Tax Bill in Full

You can’t pay your tax bill in full but wish to make monthly payments instead.

Earned Income Tax Credit (EITC)

Qualifying Individuals, Families

You want to see if you qualify for an EITC and how to apply.

Property Tax Assistance

Home, Land, Property Owners

You need any help whatsoever with property taxes for CT.

Property Tax County Directory

Home, Land, Property Owners

You need to contact your county property tax office.

Connecticut Forms and Instructions

Any Tax Filer

You need detailed information on any of the various taxes CT collects.

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