Help make cancer easier to understand.

National Cancer Information Foundation is recognized by the IRS as tax-exempt under Section 501(c)(3) of the Internal Revenue Code, effective July 7, 2026, and is classified as a public charity under Section 170(b)(1)(A)(vi). Contributions are tax-deductible to the extent allowed by law; your own deductibility depends on your individual tax situation, so please consult your tax advisor for specifics. This covers gifts made on or after July 7, 2026 — including gifts made before the IRS letter itself arrived — since the exemption is effective retroactive to that date.

Yes. Use the One-time / Monthly toggle at the top of this page, or visit our monthly giving page. Monthly gifts run through the same secure checkout and help sustain free cancer information all year.

Yes. You can make a gift in honor of someone or in loving memory of someone, and send a free tribute e-card to let them or their family know.

Cancer Explained does not sell medical information or require payment to access its educational tools. Donations help support source verification, accessibility, technology, translations, and free patient resources. Our funding page explains how money is handled and the firewall between funders and content.

Email donate@cancerexplained.org any time and we’ll take care of it promptly — no hoops, no guilt.

Yes. We email an official donation receipt from donations@cancerexplained.org right away. It shows the amount, the date, our legal name and EIN, and the tax year, so you can keep it for your records. No goods or services are provided in exchange for donations unless specifically stated.

Yes. Payments are processed by Stripe on our own site — your card details go directly to Stripe and never touch our servers.

If something looks wrong with your gift — the amount, the frequency, or a duplicate charge — email donate@cancerexplained.org and we’ll review it promptly and make it right.

Never. We don’t sell or share donor information, and we don’t run ads. See our privacy policy for the details.

Cancer Explained is a project of National Cancer Information Foundation, a Wyoming public benefit nonprofit corporation, recognized by the IRS as tax-exempt under Section 501(c)(3) of the Internal Revenue Code. Contributions are tax-deductible to the extent allowed by law.

Many employers match charitable gifts, often dollar for dollar, and some match gifts made by retirees or spouses. Ask your HR team or benefits portal for their matching form and give them our legal name, National Cancer Information Foundation, and our EIN, 42-3639534. Matching costs you nothing and can double what your gift supports.

No, and we say so on every page rather than implying otherwise. Pages are written with AI assistance from federal health sources such as the National Cancer Institute, then checked line by line against the sources they cite. That is source-checking, not medical review: it confirms a page matches what its source says. It does not confirm the page is complete, or right for your situation. Every page shows the review status it has actually had.

No. Funders never see content before you do, and no funder reviews or approves anything we write. We take no grants, sponsorships, advertising money, or industry funding, and any funder giving more than $5,000 a year is named publicly. There is no sponsored content and no pay-for-placement anywhere on the site.

We will not give you a percentage we cannot yet stand behind. As a newly incorporated organization we have not completed a fiscal year, so no audited financial report exists to quote. When one does, we will publish it. In the meantime our funding and independence policy sets out exactly what donations support and what we refuse to take.

No. Cancer Explained is educational only. We do not diagnose, recommend treatment, review anyone's records, or answer personal medical questions, and donating changes none of that. If something on the site worries you, contact your own care team. If it is urgent, call your team's number or 911.

Yes. Employer matching, donor-advised funds, stock or other assets, and planned giving are all covered under "Other ways to support Cancer Explained" on this page. If none of those fit, email donate@cancerexplained.org and we will help.

They are treated as real pages, not machine output left to drift. Translated pages carry the same urgent-symptom guidance as the English ones, and in August 2026 we reviewed all of them and restored safety guidance that had been lost in translation on pages across eleven languages. Keeping that work going is part of what donations support.