Charitable Organizations must register with the Nevada Secretary of State's office before soliciting charitable contributions in Nevada. Your donation receipt can be a mailed thankyou letter or an emailed acknowledgment.Select a process that works best for your nonprofit. Fill out this form carefully to ensure accurate information about your donations. For federal income taxation purposes, this letter acknowledges your contribution. Penn Wrestling Club is a non-profit, 501(c) 80-0390988. The IRS allows you to claim a deduction for the donations you make to qualified organizations. Explore a sample donation request letter for sports teams, plus get a free template and tips for writing your own fundraising letters. There is a legitimate way to do a team sponsorship for your local sports team and get a full business deduction for it. We can show you how.