Tracking Cost Share
The principal investigator should work with his or her departmental grant administrator at the inception of the award to identify the expenses that are anticipated to be used for cost share (with the exception of waived overhead, which is automatically tracked by OSP).
Yes. It is not enough to provide a letter of commitment from the third-party. The PI/department must provide written documentation from the third party that committed cost share is complete. This documentation must be signed by someone with signature authority and specifically indicate that none of the cost share was provided from Federal sources.