In accordance with section 640(b) of the Act, federal financial assistance to a grantee will not exceed 80 percent of the approved total program costs. A grantee must contribute 20 percent as non-federal match each budget period. The responsible HHS official may approve a waiver of all or a portion of the non-federal match requirement on the basis of the grantee's written application submitted for the budget period and any supporting evidence the responsible HHS official requires. In deciding whether to grant a waiver, the responsible HHS official will consider the circumstances specified at section 640(b) of the Act and whether the grantee has made a reasonable effort to comply with the non-federal match requirement.