https://www.trowepricecharitable.org/content/dam/pcg-site/pdfs/RMDs-and-charitable-giving.pdf
JJ's amateur summary:
IRA QCD: Once you are age 70 1/2, you can directly distribute from your IRA to qualified charities and avoid ordinary income tax on the amount. At age 73, you are required to begin IRA required minimum distributions and, with that, many are looking for qualified charities to donate that RMD money to vs paying Uncle Sam ordinary income tax.
DAF: On the other hand, I'm slightly younger and not ready to pull from my IRA so I donate to my 501(c)(3) club via a DAF. This method allows you to move equity funds into a DAF (no tax consequence). Inside the DAF, the equities can be cashed, traded, invested etc and the proceeds distributed to qualified charity(s) per your instruction all without without paying any capital gains.
One thing my club has run into with being a 501(c)(3) is staying compliant with the rules regarding Unrelated Business Income: Unrelated Business Income is money generated from any on-going activity of your organization when the activity itself does not directly further the organization’s exempt purpose... UBI is income generated by commercially-equivalent activity, meaning, your organization is providing goods or services in a commercial or business-like manner...
On occasion, we lease the use of our field to various parties as an income source. This income is taxable. More importantly, the IRS can determine that the percentage of such income and the nature of the unrelated activity is such that you lose your non-profit status. Here's a good explanation:
The tax savings and donation advantages are the big benefits of being a 501(c)(3). There is also some modest benefit in touting your non-profit status when dealing with 3rd parties or negotiating with vendors and the like. But there are also some limitations and IRS rules that require careful consideration and research to ensure compliance.
Disclaimer: I'm an engineer, not a tax specialist, and this stuff generally confuses me. Be really careful with anything I discussed here and talk to a qualified tax advisor (one who actually focuses on qualified charities).