Yes. Voices of Children Ukraine Inc. is a registered nonprofit organization in the United States, with 501(c)(3) status (EIN: 99-3294424, registered address: 8 The Green Street, Dover, Delaware, 19901). This means that donations made through the U.S. entity are tax-deductible in the United States. After making a donation, you will receive an email receipt, which you should keep for tax reporting purposes (Schedule A). According to the IRS, the deductible limit may be up to 60% of your income. Donors can verify the 501(c)(3) status on the IRS Exempt Organizations Select Check website.
Donations made directly to the Ukrainian organization are not tax-deductible in the U.S.