Tax bills are mailed during the last week of June each year. If you do not receive a tax bill by the first week of July, please call the Tax Collector’s office at 860-663-1765, ext. 508 or send an email to mnuhn@townofkillingworth.com . Connecticut General State Statute 12-130 says that failure to receive a tax bill does not relieve the taxpayer of the requirement to pay the bill. Consequently, if you do not receive a tax bill, the tax is still due, even with any interest that may have accrued. Please note: you will only receive one bill for Real Estate and Personal Property Taxes. We do not send out a bill for the second installment of these bills.