Each eligible joining spouse and each unmarried child under 21 adds US$15,000 in processing and a US$1 million gift, including in corporate cases. Those are the published figures and should be re-verified officially before any payment, since inclusion and eligibility are decided by the program rather than by a budget.
Family amounts are per person, and eligibility is separate from cost
The published structure charges per eligible joining family member rather than treating a household as one unit, which changes the arithmetic considerably for a family of four. Corporate sponsorship does not remove those additional amounts. Two distinctions are worth holding onto.
Paying for a family member does not itself grant that person status; each person's eligibility, admissibility and, where relevant, age and marital status are assessed on their own facts, and children under 21 must be unmarried to be eligible as joining family. And because successful applicants proceed through EB-1 or EB-2, the family's outcome depends on that category's rules and on visa availability. Viktor should confirm current family terms on the official page before committing, and should not assume figures quoted in an earlier conversation still hold.