DRS: OP-161

OP-161, Petroleum Products Gross Earnings Tax Return. Taxpayers must file a return for each calendar quarter by the last day of the month following the filing period. Quarterly filing due dates are the last day of January, April, July and October. If the due date falls on a Saturday, Sunday, or legal holiday, the next business day is the due date. A return must be filed even if no tax is due.  To find the form or further instructions, click here.

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Connecticut business taxpayers can electronically file most Connecticut business tax returns using the Taxpayer Service Center (TSC-BUS). The TSC is an interactive tool that provides a free, fast, easy, and secure way to conduct business with DRS. Click here for more information.