34 CFR §371.40

1. (a)Federal share Except as provided in paragraph (c) of this section, the Federal share may not be more than 90 percent of the total cost of the project.
2. (b)Non-Federal share The non-Federal share of the cost of the project may be in cash or in kind, fairly valued pursuant to match requirements in 2 CFR 200.306.
3. (c)Waiver of non-Federal share In order to carry out the purposes of the program, the Secretary may waive the non-Federal share requirement, in part or in whole, only if the applicant demonstrates that it does not have sufficient resources to contribute the non-Federal share of the cost of the project.