Understand what a charitable donation is and how to claim a tax deduction without a tax receipt with IRS Form 8283. 1 Enter the amount you wish to donate to each of the following voluntary charitable donation funds.You may contribute any whole-dollar. Generally, you can only deduct charitable contributions if you itemize deductions on Schedule A (Form 1040), Itemized Deductions. Taxpayers with an active income tax account must apply online to IDOR for approval to make contributions through our free online tax portal, MyTax Illinois. Find out which expenses you can claim as income tax deductions and work out the amount to claim. Political party and independent candidate donations. Use Guest mode to sign in privately. Make your mission a movement. Streamline fundraising and donor management with GiveSmart's modern, all-in-one nonprofit fundraising software.