Frequently Asked Questions

How do I donate by mail?
Please mail your check to:
Institute for Humane Studies
Vernon Smith Hall, 1st Floor
3434 Washington Blvd.
Arlington, VA 22201

How do I donate by PayPal?
Please send PayPal donations to:

Is my donation to IHS tax deductible?
Yes, IHS is a 501(c)(3) organization, and donations made to IHS are 100% tax deductible.  Our tax identification number is 94-1623852.

What is your refund policy?
If you have made an error in making your donation or change your mind about contributing to the Institute for Humane Studies, we will honor your request for a refund within 30 days of your donation. To request a refund, please call Margaret Annunziata at 703-993-4906. Refunds are returned using the original method of payment.

What if I have questions about my donation?
Margaret Annunziata on our team will be happy to help you. Please call her at 703-993-4937 or email

IHS mail donate, frequently asked questions
IHS tax donate, frequently asked questions
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