Sentence:  There shall be deducted from the amount of each payment made pursuant to subsection ( c ) of section 8 , as <WSD>reimbursement</WSD> for the expenses incurred by the United States , an amount equal to 5 per centum of such payment . 
Meaning of the word marked with <WSD> tags:  compensation paid (to someone) for damages or losses or money already spent etc.