Business owners in the state of Connecticut need to become familiar with state and local tax in Connecticut. While learning and following tax rules and regulations can come with some difficulty, the Connecticut Department of Revenue Services tries to make this task easier on businesses.

Using the Department of Revenue Services' website, you can obtain tax information, file taxes online, request Connecticut tax forms and even register a new business. You can perform all of these tasks in an easy and secure manner online. Be sure to:

1. Use Connecticut state and local tax resources to help you understand business taxes in Connecticut.

2. Obtain applicable Connecticut tax forms.

3. File your business taxes online using the Taxpayer Service Center.

4. Use online tax tools provided by the Connecticut Department of Revenue Services.

Action Steps
The best contacts and resources to help you get it done

Use Connecticut tax resources to gain information about business taxes

For information about various business taxes, including sales and use tax, corporation taxes and income tax withholding, look to the many Connecticut local tax and state tax resources online. The Connecticut Department of Revenue Services has many tax resources designed to help businesses successfully understand business taxes. Use these resources to learn about business taxes in Connecticut.

I recommend: Search the Taxpayer Answer Center for answers to common tax questions. View information on sales and use tax in Connecticut. Obtain information on income tax withholding. Locate S corporation tax information.

Gather and review the necessary Connecticut state tax forms

If you need to review or obtain Connecticut state tax forms for businesses, look to the website of the Connecticut Department of Revenue Services to fill your tax form needs. Download a variety of business tax forms directly from the website. You can also request to have forms sent to you in the mail. When requesting forms by mail, have the form number or numbers handy.

I recommend: Download and review Connecticut tax forms for businesses. Request tax forms in the mail from the Connecticut Department of Revenue Services.

File local Connecticut taxes for your business online

Businesses in Connecticut can file both Connecticut local tax and Connecticut state tax online through the Taxpayer Service Center for businesses (TSC-BUS) on the website for the Connecticut Department of Revenue Services. To use this service, you must have a Connecticut tax registration number (CT REG). Also, be sure to check out the tax calendar online to make sure you file state and local tax in Connecticut in accordance with tax filing deadlines.

I recommend: File state of Connecticut tax for your business using the Taxpayer Service Center for businesses (TSC-BUS). View the online tax calendar for information on filing deadlines for businesses.

Take advantage of online tax tools for Connecticut state taxes

Online tax tools from the Connecticut Department of Revenue Services can help businesses take care of various tax related tasks in a secure and simple manner. New businesses can register online, and existing businesses can add additional tax types to their current business registration. Businesses can also obtain copies of tax returns for previous years by using the online Taxpayer Service Center.

I recommend: Register your new business through the Taxpayer Service Center to receive a Connecticut tax registration number. Add additional tax types to your Connecticut business registration. Request copies of previous state of Connecticut tax returns through the TSC-BUS.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Consider signing up for the free electronic newsletter, DRS E-NEWS, from the Connecticut Department of Revenue Service. This newsletter contains valuable information on TSC-BUS, and it provides quick links to Connecticut tax forms for businesses. You can find information about how to sign up on the Department of Revenue Services website.