SFEcon is a non-profit, public benefit corporation registered in California, USA, for educational and research purposes. Our CCN is 3381371.

We have federal 501(c)3 tax status. Our EIN is 45-2537301. Donations are greatly appreciated and fully tax deductible.

SFEcon's online e-book and tutoring services are available without charge. Contributions will be directed to keeping this site up and current, and to providing honoraria for the young people whose tutoring you might have found beneficial.

The PayPal button above provides the most direct method of support, plus a receipt for your generosity. Thank you.

Note: There are a number of scam internet sites that purport to accept donations for any nonprofit that you might be searching for. SFEcon does NOT do business with any such site.