Since most charitable organizations are considered section 501(c)(3) organizations, donations to these charities are generally tax deductible for the donor. To be taxexempt under section 501(c)(3) of the Internal Revenue Code, an organization must be organized and operated exclusively for exempt purposes.Your non-profit must have the letter of determination from the IRS stating that your organization is exempt under 501(c)(3) status. To do this, you must file Form 1023, Application for Recognition of Exemption Under Section 501(c)(3) of the Internal Revenue Code. Qualifying organizations must complete Maryland Sales and Use Tax Exemption Certificate Application (SUTEC. In many cases, charitable donations are tax-deductible. When you donate to a qualifying organization, you can deduct the amount from your taxable income. A 501(c)(3) nonprofit is a nonprofit organization that the Internal Revenue Service (IRS) recognizes as taxexempt (excused from paying federal income tax) File Maryland Corporate Tax Exemption Renewals. Before contributing to a non-profit, ensure its IRS classification as a 501(c)(3).