Donate by wire, ACH, stock, or cryptocurrency
To donate by wire, ACH, stock, or cryptocurrency, please email [email protected].
Donate by check
Donations can be mailed to:
The Long Now Foundation
P.O. Box 475668
San Francisco, California 94147
Corporate sponsorship
Many of our programs are made possible through generous sponsorships — including our popular Talks. Please email [email protected] for more information about how you can sponsor our work.
Legacy giving
Legacy giving is long-term thinking in action! For details on bequests and planned giving at Long Now, please email [email protected].
Tax ID number and fair market value of membership gifts
Your donations and membership dues are tax-deductible to the extent allowed by law, minus the fair market value of any gifts you have received from us. For more detailed information about the tax deductibility of your membership dues, please consult your local tax laws, or speak with a tax professional. The Long Now Foundation is a 501c3 nonprofit organization and our tax identification number is 68-0384748.
The fair market values for most of our goods and services are listed below (please note that some items are not currently available).
| Challenge Coin | $3 |
| Long Now Membership Card | $15 |
| Works in Progress book | $20 |
| Brian Eno’s Bells CD | $20 |
| Titanium Flask | $33 |
| Etched Flask | $60 |
| Bottle keep (fill or refill) | $90 |
| Rosetta Wearable Disk | $150 |
| Interval Tea Club | $150 |
| Equation of Time Cam | $900 |
If we can help, please contact us at [email protected].