When you fill out your tax return this year, you can include all contributions you make to these schools as a deductible charitable contribution. In many cases, charitable donations are tax-deductible.When you donate to a qualifying organization, you can deduct the amount from your taxable income. Since most charitable organizations are considered section 501(c)(3) organizations, donations to these charities are generally tax deductible for the donor. This receipt is issued to individuals who have donated cash or payment, personal property, or a vehicle and seek to claim the donation as a tax deduction. Complete your Maryland return through the line labeled "Maryland Tax. " Complete Form 502CR, following the instructions provided. Learn how to easily create your donation receipts and the best practices to follow in the year-end receipts to your donors. For most organizations, the tax year ends December 31 so the Form 990 is due May 15. 2 File Maryland Corporate Tax Returns.