Connecticut State Department of Revenue Services

Highway Use Fee - Registration is now open for certain carriers to register for the new Connecticut Highway Use Fee - Click here for more information.

IMPORTANT INFORMATION - the following tax types are now available in myconneCT: Individual Income Tax, Attorney Occupational Tax, Unified Gift and Estate Tax, Controlling Interest Transfer Tax, and Alcoholic Beverage Tax. - Click here for the latest information.

Connecticut Source Income of Partnership- Nexus

Income derived from or connected with Connecticut sources includes income, gain, loss, or deduction attributable to:

  • The ownership or disposition of any interest in real property or tangible personal property located in Connecticut;

  • The ownership of any intangible personal property to the extent it is used in a business, trade, profession, or occupation carried on in Connecticut; or

  • A business, trade, profession, or occupation carried on in Connecticut.

A partnership has income, gain, loss, or deduction from sources in Connecticut if it is a partner in a partnership which itself has income, gain, loss, or deduction derived from Connecticut sources. This flow-through of income, gain, loss, or deduction extends through all layers of partnerships.

A partnership carries on a business, trade, profession, or occupation within Connecticut if:

  • It has or operates an office, shop, store, warehouse, factory, agency, desk space, or other place in Connecticut where its affairs are systematically and regularly carried on; or

  • Activities in connection with the business are conducted in Connecticut with a fair measure of permanency and continuity for livelihood or profit, as distinguished from isolated or incidental transactions.