Up to 25%. http://www.law.cornell.edu/uscode/text/19/1619
The above information does not establish an attorney client relationship nor is it meant to provide legal advice.
Not more than 25% of the money or appraised value of non-liquidated assets; however, the compensation shall not exceed $250,000.00 in any case. (19 USC Section 1619(a) and (b).)
Joshua Sabert Lowther, Esq.
NATIONAL FEDERAL DEFENSE GROUP
Up to 25% but greatly depends on the US Attorney's office. This should be discussed with the USAO as early as possible when considering to be an informant.