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Connecticut Department of Revenue Services Announces Start of Tax Filing Season

Taxpayers encouraged to file and pay electronically
Connecticut Department of Revenue Services Reminder: New London County Tax Filings Are Due on June 17, 2024

Extension granted due to FEMA designation after January storms
Filing Due Date Reminder
Reminder: October 15 is deadline to file Connecticut individual income tax returns on extension
Connecticut Department of Revenue Services Releases Tax Gap Report
Individual Income Tax Forms

Income Tax
2018 Corporation Tax Forms
Individual Income Tax Forms

Income Tax
Sales Tax Returns

Sales Tax Returns
DRS Forms

Forms
DRS Forms

Forms
Fraud Prevention Information
2020 Corporation Tax Forms

Corporation tax forms
Attorney Occupational Tax Form

Attorney occupational tax

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