An abatement is a reduction in a real estate valuation based on a correction to the assessed valuation. The only criteria the assessors examine on an abatement application are the accuracy of the property data and the market value of the property. An exemption is a reduction in a real estate tax based on an individual meeting certain qualifications set forth by the Commonwealth of Massachusetts. For example, being a disabled war veteran for a veteran’s exemption, or being blind for a blind exemption. Please refer to “Personal Exemption Information” under the BOA section of the Town website for a more detailed explanation of the requirements for these and other exemptions.