What Claude (Anthropic) with web search answered for payment processing (nonprofits) on 2026-09-14

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-14

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best payment processing for nonprofits

Brands named, in the order the engine gave

1. Zeffy mentioned
   For most small-to-mid nonprofits: Zeffy if you want to keep 100% of donations, Givebutter if you want a real fundraising platform, Stripe if you have a developer and want plain processing.
2. Givebutter mentioned
   For most small-to-mid nonprofits: Zeffy if you want to keep 100% of donations, Givebutter if you want a real fundraising platform, Stripe if you have a developer and want plain processing.
3. Stripe mentioned
   For most small-to-mid nonprofits: Zeffy if you want to keep 100% of donations, Givebutter if you want a real fundraising platform, Stripe if you have a developer and want plain processing.
4. you're mentioned
   Best if you're embedding donations in your own site/app or need clean API-level control.
5. PayPal mentioned
   PayPal - 1.99% + $0.49 for US 501(c)(3)s.
6. Bloomerang mentioned
   Bloomerang - 2.4% + $0.30 with the nonprofit discount, but the real reason to pick it is that payments are native to the donor CRM: gift, payment, and donor record update in one system.
7. CharityEngine mentioned
   CharityEngine - Full fundraising platform and a PCI-certified processor in-house, including ACH, so there's no middleman markup at each hop.

Sources the engine cited

The answer, as recorded

## Short answer For most small-to-mid nonprofits: **Zeffy** if you want to keep 100% of donations, **Givebutter** if you want a real fundraising platform, **Stripe** if you have a developer and want plain processing. Here's the ordering I'd actually give: **1. Zeffy** - Genuinely $0 to the nonprofit: no platform fee, no per-transaction fee, and they eat the card costs. They fund it with an optional tip prompt to donors (default ~17% under $99.50, ~15% above), which about two-thirds of donors pay. The catch is real - that prompt confuses some donors and reads as a surprise charge, and you can't turn it off. Best for small orgs, churches, and grassroots groups where 3% actually hurts. Weak on auctions, deep reporting, and CRM. ([zeffy.com](https://www.zeffy.com/blog/zero-fee-fundraising), [donorbox.org](https://donorbox.org/nonprofit-blog/zeffy-reviews)) **2. Givebutter** - The best balance of features and cost. 2.9% + $0.30, but donors can cover fees via the tip model, so effective cost often lands near zero. You get donation pages, peer-to-peer, event ticketing, auctions, text-to-give, and a light CRM in one place. This is my default recommendation if you run events or campaigns, not just a "Donate" button. ([charitycharge.com](https://www.charitycharge.com/nonprofit-resources/givebutter-vs-zeffy/)) **3. Stripe** - 2.2% + $0.30 for verified 501(c)(3)s vs. the standard 2.9% + $0.30. You have to apply, and eligibility requires an EIN/IRS letter *plus* 80%+ of your Stripe volume coming from tax-deductible donations. Best if you're embedding donations in your own site/app or need clean API-level control. It's a processor, not a fundraising platform - you'll bolt something on top. ([support.stripe.com](https://support.stripe.com/questions/fee-discount-for-nonprofit-organizations), [zeffy.com](https://www.zeffy.com/blog/stripe-for-nonprofits)) **4. PayPal** - 1.99% + $0.49 for US 501(c)(3)s. Lower percentage than Stripe but a much higher fixed fee, so it's *worse* on small gifts and only wins above roughly $27 per donation. Worth adding as a secondary option because some donors simply trust and prefer it. ([rallyup.com](https://rallyup.com/learn/paypal-vs-stripe-which-payment-processor-is-best-for-nonprofits/)) **5. Bloomerang** - 2.4% + $0.30 with the nonprofit discount, but the real reason to pick it is that payments are native to the donor CRM: gift, payment, and donor record update in one system. Choose this when donor retention and stewardship matter more than shaving 0.5%. ([wildapricot.com](https://www.wildapricot.com/blog/payment-processing-for-nonprofits)) **6. CharityEngine** - Full fundraising platform *and* a PCI-certified processor in-house, including ACH, so there's no middleman markup at each hop. Overkill for small shops; makes sense at higher volume where negotiated rates and in-house ACH beat everything above. ([charityengine.net](https://charityengine.net/blog/payment-processing-for-nonprofits-10-top-options-for-2026/)) ## The one thing that decides it Run your own numbers on **average gift size**, not the headline rate - the fixed per-transaction fee dominates for small donations, which is exactly what most individual donors give. And push **ACH/bank transfer** for recurring and major gifts regardless of who you pick; it's flat-fee and saves far more than switching processors ever will. Sources: - https://www.zeffy.com/blog/zero-fee-fundraising - https://donorbox.org/nonprofit-blog/zeffy-reviews - https://www.charitycharge.com/nonprofit-resources/givebutter-vs-zeffy/ - https://support.stripe.com/questions/fee-discount-for-nonprofit-organizations - https://www.zeffy.com/blog/stripe-for-nonprofits - https://rallyup.com/learn/paypal-vs-stripe-which-payment-processor-is-best-for-nonprofits/ - https://www.wildapricot.com/blog/payment-processing-for-nonprofits - https://charityengine.net/blog/payment-processing-for-nonprofits-10-top-options-for-2026/

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Answer Watch records what one AI answer engine said on one date, nothing more. Each page names the engine and the model, carries the date the question was asked, and lists the brands that appeared in the answer in the order the engine gave them, with the sources it cited. It is a measurement, not a ranking, not a recommendation and not a claim about the world. Brands that did not appear in an answer are not named on any public page. Coverage: Claude (Anthropic) with web search. Other engines not included.