Sample search strings are listed below:
"tax relief program" OR "tax abatement program"
"elderly tax relief" OR "elderly or aged or older or elder or geriatric"
"disabled tax relief" OR"disabled or disability or disabilities"
"tax remission"
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Think tanks collectively study virtually all issues of any importance to policymakers. This customized Google search produces results from only think tanks. Think tank reports can be excellent sources of background information and they often will be sources of both sides of an issue.
How to find more programs like this? Search google with the search string: tax relief elderly site:gov
Also try the string: tax relief elderly site:edu