The I-526 or I-526E filing fee, later the I-829 fee, immigrant visa or adjustment fees for each family member, medical examinations, professional fees for the petition and business plan, and the cost of assembling source-of-funds evidence. Check the current amounts in the USCIS fee schedule (G-1055).
Separate the investment from the cost of the petition
The qualifying capital must be invested in the enterprise, and none of the petition costs count toward it. Government fees for the investor petition and the later petition to remove conditions are set in the fee schedule and have changed in recent years, so read the schedule when budgeting. Each family member will pay immigrant visa processing fees at the consulate, or adjustment of status fees if already in the United States, plus medical examination costs.
Professional fees typically cover the petition itself, a business plan that meets the evidentiary standard for job creation, and the source-of-funds analysis; a direct investment often needs more work on the job-creation evidence than a regional-centre subscription because there is no economic model to rely on. Also budget for the business's own legal and accounting setup, which is a company expense. A direct EB-5 avoids regional-centre administrative fees but shifts more evidentiary burden to the investor's own documents.