Can I pay my taxes with an online check sent by my bank?

Yes. We do NOT recommend paying your taxes this way, especially towards the end of any month, as the envelope that the checks are mailed in, do not have a USPS postmark. Since CT General State Statute states "No tax or installment thereof shall be construed to be delinquent...if the envelope containing the amount due..., bears a postmark showing a date within the time allowed by statute for the payment of such tax or installment.", we will process the checks using the interest date of the day that the payment was received.