Connecticut State Department of Revenue Services

WEBINAR: DRS will be holding a webinar on Wednesday, June 25, 2025, at 10:00 a.m.  This session will provide an overview of the sales and use tax requirements pertaining to Sales and Use Taxes: Selling at Antique Shows, Craft Shows, Fairs, Farmer’s Markets, or Flea Markets. Select here to register.

Ruling 89-198

Engineering

You render a professional engineering service whereby you perform optical analyses and designs of an X-ray telescope that is to be placed in orbit around the earth for a company engaged in a government contract.

The optical engineering service that you perform is not subject to sales and use tax.

LEGAL DIVISION

November 8, 1989