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Avalara Help Center

Set Up Connecticut Returns

This article applies to:Returns Central

Tell Us Where You Collect Tax 

Add Connecticut to the places where you collect tax. This tells AvaTax to calculate tax on Connecticut transactions. See the Connecticut Department of Revenue Services website for details about nexus, registration, and taxes in Connecticut.

Before you add Connecticut, there are two things you need to do:

You don't have to select a tax type for Connecticut.

"Sourcing" determines the location where a sale is taxed. Connecticut is a destination-sourced state.

Add Your Company Locations 

Connecticut doesn't require location reporting on the returns. Add any physical locations you have in Connecticut to enhance your company setup and track sales by location.

Schedule Your Returns

After you tell us where you collect tax and add locations, you're ready to schedule returns. Go to Returns in AvaTax to provide a funding power of attorney and schedule your returns

Your company name and taxpayer ID from Your Company Details show up on your returns. Make sure they match what’s on your registration information.

Use this info to schedule your returns. Keep in mind that the selections you made when you told us where you collect tax, any location codes you entered, and the forms you select are related and should tie together.

  • Select form CT OS 114 to report all tax types
    • Confirm your filing frequency by viewing your Registered Tax Types on your CT Business Profile
    • Enter your eleven-digit Connecticut registration ID (CT REG) exactly as it appears on your registration

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