In most cases, to apply for a grant your organization must have a charitable designation from the Internal Revenue Service such as a 501(c)(3) exemption, however, some grants are available to for-profit entities.
If your organization is for-profit, you will find that federal grants generally prevent you from profiting from the activities funded with federal dollars. To find information on available federal grants now open to receive applications in which you or your organization may have an interest, follow the directions given on the federal grants website to obtain information and forms to apply for those grant opportunities for which your organization is an eligible recipient.