To apply for a US Business Visa (typically the B-1 visa), you will need to pay a non-refundable application fee of USD $185. This fee is required for processing your visa application and must be paid whether your visa is approved or not.
Beyond the official fee, there is no fixed minimum amount of money you must have to qualify. However, you must show sufficient financial resources to cover your entire trip, including travel, accommodation, meals, and any business-related expenses. This is typically demonstrated through bank statements, income proof, or sponsorship letters.