Prepare and e-File your current Connecticut State Tax return - resident, nonresident, or part-year resident returns - together with your IRS return now via eFile.com.
Connecticut State Income Tax Rate: 6.99%
Prepare only a CT State Return without an IRS return. Details
Where Is Your Connecticut Tax Refund Money
Where is Your IRS Refund?
Connecticut Income Tax Extension
Connecticut Income Tax Amendment
Connecticut, IRS Late Filing, Tax Payment Penalties
1. Outstanding Tax Balance after Original Deadline:
10% penalty and 1% interest rate for each month or fraction of a month until payment is made.4. IRS Penalties:
Calculate and Estimate your potential IRS Income Tax Return Penalties
Connecticut Income Tax Brackets
Connecticut Income Tax Forms
Connecticut Income Tax Code
Connecticut Unemployment Benefits
Unemployment benefits is taxed to the same extent as federal law in Connecticut.
Connecticut Marriage Penalty
CT-1040ES - Connecticut Estimated Connecticut Income Tax Payment Coupon for Individuals
CT-W4 - Connecticut Employee's Withholding Certificate
CT-1040 EXT - Application for Extension of Time to File Connecticut Income Tax Return for Individuals
CT-1040NR/PY - Connecticut Non-Resident and Part Year Resident
CT-1040V - 2020 Connecticut Electronic Filing Payment Voucher
CT-1040X - Amended Connecticut Income Tax Return for Individuals
CT-2210 - Underpayment of Estimated Income Tax by Individuals, Trusts, and Estates
CT-6251 - Connecticut Alternative Minimum Tax Return - Individuals
CT-8822 - Change of Address
CT-8857 - CT Request for Innocent Spouse Relief
Form CT-1040 - Connecticut Resident Income Tax Return
Form OP-186 - Connecticut Individual Use Tax Return
Schedule CT-EITC - Connecticut Earned Income
Supplemental Schedule CT-1040WH - Connecticut Income Tax Withholding
* Due to IRS and State Tax Agency tax data sharing and validation requirements, you can only e-file a State Income Tax Return while also e-filing a Federal Income Tax Return. This is not an eFile.com created policy, but all online tax web sites have to adhere to this IRS/state issued tax data sharing policy. You can however prepare all 44 State Income Tax Returns on eFile.com if you have already e-Filed or filed your IRS return. Instructions on how you can ONLY prepare and file State Income Tax Return(s). Only on eFile.com can you prepare, file or e-file unlimited State Tax Returns for one low price and not pay for each State return like you would do on H&R Block® vs. TurboTax®. Dare to Compare Now.