Ct-1040 Instructions 2025. To request an extension of time to file your return, you must file form ct‑1040 ext, application for extension of time to file connecticut income tax return for individuals, and pay all the tax you expect to owe on or before the due date. 2022 connecticut resident income tax return instructions:

Simple, secure, and can be completed from the comfort of your home. Calculate your total tax due using the ct tax calculator (update to include the 2025/26 tax brackets).