The minimum requirement for an EB-5 investment is $1 Million or if the project is in a Target Employment Area then the minimum requirement is $500,000.00.
For an investor to obtain approval of the I-526 petition, $500,000 must be invested. If the entire business only needs that much, that will be fine. For projects looking to attract many investors (like one in a regional center program), investors like to see a moderate to substantial percentage of non-EB-5 funding involved.