SECTION 1. Section 6 of chapter 62 of the general laws, as appearing in the 2022 Official Edition, is hereby amended by striking out the definition of “Real estate tax payment” and inserting in place thereof the following definition:-

"Real estate tax payment", the real estate tax levied pursuant to chapter 59 on the taxpayer's residence and actually paid by the taxpayer during the taxable year, including water and sewer debt service charges assessed pursuant to subsection (n) of section 21C of chapter 59, exclusive of special assessments and delinquent interest, and less any abatement granted. For owners of residential property located in communities which have not exercised the option to assess water or sewer debt service charges pursuant to subsection (n) of section 21C of chapter 59, the real estate tax payment to be considered for purposes of calculating this credit shall also include 50 per cent of the owner's water and sewer charges actually paid in the taxable year for which the credit is sought. In addition, the real estate tax payment to be considered for purposes of calculating this credit shall also include 50 percent of the owner’s home owners insurance policy whether or not required by a mortgage holder, if any.  In the case of a multi-unit dwelling, the real estate tax payment, including the water and sewer charges and homeowner insurance cost as applicable shall constitute that portion of the real estate tax levied and paid, and the portion of the applicable water and sewer charges and homeowners insurance charges actually paid, on the entire building or of the taxpayer in accordance with procedures established by the commissioner.