The Bureau of Local Assessment in conjunction with the Massachusetts Association of Assessing Officers developed Income and Expense Form (LA-38D) templates. The templates are designed so that they will be easy to download and adapt to meet specific community needs. Assessors may also elect to use all or some portions of the form. Whether assessors use the recommended form or another I&E form, assessors in every community should be obtaining this confidential real estate income and expense data on an annual basis to assist in developing values that accurately reflect fluctuations in the market.