A. The penalty is 10% of the tax due. Interest is charged at the rate of 1% per month from the due date of the tax return.
This answer is intended to provide general information concerning a frequently asked question about a current position, policy, or practice associated with the taxes administered by the Connecticut Department of Revenue Services. It may include an informal interpretation of Connecticut tax law by the Department of Revenue Services (DRS). However, it is not intended to serve as a legal ruling.