You can donate directly to the defense and reconstruction of Ukraine:

https://u24.gov.ua/

Donations towards medical aid or rebuilding (but not defense and demining) appear to be tax deductible (EIN 87-2080907).

For every boost this post gets, I'll add a dollar to my next donation.

UNITED24 — The initiative of the President of Ukraine

The official fundraising platform for collecting donations to support Ukraine

u24.gov.ua
@theruss I’ve given several times but have no reason to believe it’s tax deductible - can you back that claim up?
@peterwbackes Good point; I am going to take that out while I recheck my sources. It may only apply to donations via a partner organization.

@peterwbackes Found it, I think.

Page 4 of https://files.u24.gov.ua/report_20220512_EN.pdf includes "receipts to the accounts of the Ukraine House DC Foundation"

Their Tax ID is 87-2080907.

@peterwbackes @theruss You get this text when you try to donate to the medical or rebuilding targets.