In Washington, nonprofit organizations are generally taxed like any other business. Form 8283 has two sections.When you prepare your federal tax return, the IRS allows you to deduct the donations you make to churches. The IRS offers tax deductions for any donations made to charities over the course of the tax year. Individuals and businesses alike can declare their donations. Each donor receipt should include the charity's name and name of the donor. Not yet a subscriber? 1 File IRS Form 990. Many companies offer nonprofit discounts, but in order to obtain them, you'll often need to show your determination letter as proof of tax exemption. Donors must have a bank record or written acknowledgment from the nonprofit before claiming a tax deduction for a charitable contribution.