• You can still donate your RMD to Vanguard Charitable. You will have to pay income taxes on the distribution, but the subsequent charitable contribution tax deduction may help offset these costs.
• You can donate your RMD to Vanguard Charitable's Sustainable Disaster-Relief Fund (SDRF), which supports communities recovering from natural disasters. The SDRF is a field-of-interest fund (targeted for a specific need), not a donor-advised fund. As a result, it is eligible to receive QCDs. But because the SDRF is not a donor-advised fund, you will not have discretion over grants from this fund.
• You can donate your RMD directly to a qualified 501(c)(3) public charity. As long as the charity qualifies, this distribution can be made tax-free.

Do I qualify for a QCD if I give Roth IRA distributions to Vanguard Charitable since I've already paid taxes on that money?

Technically yes, but you also likely may not want to. Because the Roth IRA contributions have already been taxed, qualified earnings are tax-free, and RMDs do not apply to these accounts (original account holders aren’t required to take an RMD but their non-spouse beneficiaries are when they inherit the account).

You may instead want to consider donating appreciated securities rather than donating from your Roth IRAs due to the double tax benefit of avoiding the tax on the capital gains and appreciation, in addition to receiving the charitable tax deduction.

Resources for more information on RMDs and QCDs:

https://www.irs.gov/retirement-plans/retirement-plans-faqs-regarding-required-minimum-distributions

https://www.irs.gov/retirement-plans/retirement-plans-faqs-regarding-iras-distributions-withdrawals