File Your Taxes and/or Make a Payment On-Line! You were a nonresident or part-year resident with CT source income during the 2020 taxable year and you did not file a 2020 income tax return because you had no CT income tax liability. Connecticut Sales and Use Tax. Tax Forms Available For Downloading. Generally, the quarterly tax forms and payments must be postmarked no later than 30 days after the end of each calendar quarter. Employer Links. Connecticut Department of Revenue Services. Connecticut Secretary of the State Department of Economic and Community Development. Small Business Administration - Connecticut Index of State Agencies Advance CT Make Changes to Your Account (i.e. Pursuant to Connecticut General Statutes 31-225a(j)(2) and 31-225a(j)(4) employers are required to file UI Tax returns and make payments electronically. The Connecticut Department of Revenue Services processes all State of Connecticut taxes and offers free electronic payment of taxes and liabilities. The Connecticut Department of Revenue Services provides IFTA registration, IFTA licenses, and IFTA vehicle decals, as well as Connecticut-only motor carrier licenses and vehicle decals. Below is a schedule, by quarter, of when the returns are due: 1 st Quarter returns and payments due on or before 4/30 The Tax and Wage Reporting Application has timed out. To calculate your State of CT quarterly estimated tax payments, you must estimate your adjusted gross income, deductions, and credits for the calendar year 2021. The information you have entered up to this point has been saved but you must restart the application and log in again. Employer registration and liability. Employer Contribution Returns ... Fillable On-Line: Correction of Employer Contribution Return / Correction of Employee Quarterly Earnings Report: UC-2 CORR/UC-5A CORR: PDF: 603KB: YES: File online! More information is available here: CT Department of Revenue: Connecticut Business Entity Tax Sunset. General. You also need to obtain a Sales Tax Permit before you begin selling your goods or services. These Where to File addresses are to be used ONLY by TAXPAYERS AND TAX PROFESSIONALS filing individual federal tax returns in Connecticut during Calendar Year 2021. If you continue to have problems, contact the Connecticut Department of Labor for assistance. If you live in CONNECTICUT ... and you are filing a Form ... and you ARE NOT ENCLOSING A PA EMPLOYER UPDATE: The agency’s Internet Tax and Wage Reporting System, updated November 10, 2014, now allows registered employers to file original returns for any quarter due, update name and address information, and make payments on unemployment contributions, assessments and billings. Pursuant to Connecticut General Statutes 31-225a(j)(2) and 31-225a(j)(4) employers are required to … Payroll Quarterly Reporting – Connecticut 8 1-4: End of Quarter Report: CT-941 The End of Quarter – Totals Page State-CT Report will provide you with the total Gross Wages, Total Gross Connecticut Wages and Total Connecticut Tax Withheld for completing the Connecticut Quarterly Reconciliation of Withholding Form or CT-941. Connecticut collects a state income tax at a maximum marginal tax rate of %, spread across tax brackets. Sales and use taxes are due if you sell goods or taxable services in Connecticut. Connecticut Department of Labor Connecticut Unemployment Insurance Tax Information New Hire Registry. Taxation.