You are right -- the 8% rate is usually on TDC (total direct costs).
The grant application should specify this for certain.  Often the
types of grants that have the 8% IDC recovery rate include only
salary and fringe benefits, therefore require lower expenditure of
institutional support.

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Evelyn J. Ford, Research Administrative Manager
ASRI Neurosciences Research Center
Pittsburgh PA 15212  U.S.A.
412.359.4499 FAX   412.359.4475 voice   xxxxxx@singer.asri.edu