Free donation platforms: what the catch actually is

Every platform in this article uses the word "free" somewhere on its pricing page. None of them is running a charity for charities. Payment processing costs real money—the card networks take their cut on every gift, whoever's logo is on the donation form—and platform engineers do not work for exposure. So when a giving platform says free, the honest question is not "is there a catch." There is always a catch, in the narrow sense that someone is paying. The question is who, and whether the arrangement suits your organization or quietly works against it.

"Free" is not a price. It's a fee architecture—a decision about which party the cost lands on. In the five-architecture framework we use across this pillar, three of the five can honestly print the word free on a pricing page. They are very different products, and the differences matter more than the word they share.

The three ways "free" gets built

Free to the org, donor tips fund it (Architecture E). You pay nothing. Your donors are asked, at checkout, to add a tip to the platform on top of their gift. Zeffy, Givebutter with tips on, and Txt2Give run this way.

Free plan, percentage rates (Architectures A and B wearing a free hat). The subscription is $0. The per-gift percentage is not, and it applies to every dollar you ever raise. Tithe.ly's Free Giving plan, standalone Subsplash Giving, and Givelify are the pattern.

Flat subscription, donor mandatorily covers processing (Architecture D). You pay a fixed monthly fee. The platform takes no cut of any gift, and processing costs are passed to the donor automatically—not as an option the donor can decline. Nucleus and RebelGive. The "free" claim here refers to the org's percentage, which is genuinely zero. It does not refer to the total cost, which is the subscription plus what your donors absorb.

Let's take them in order.

When your donors pay: the tip-funded platforms

Zeffy is the cleanest version of this model. 0% platform fee, 0% processing—Zeffy covers the Stripe costs itself (verified July 2026, from Zeffy's own support and product pages). The platform is funded by an optional tip your donors are asked to add at checkout. The default has been reported at 17% on gifts under $100 and 15% above—that's a secondary source, not Zeffy's own documentation, so treat the exact numbers as unconfirmed. Two more asterisks: Zeffy is available only to registered US and Canadian nonprofits, and Zeffy says that in rare high-volume, low-tip cases it contacts the organization directly. That's the entire fine print. For a registered 501(c)(3) whose leadership is comfortable with donors seeing a tip prompt, it is the real thing—we cover it fully in our Zeffy review, and Zeffy pays us nothing for saying so.

Givebutter with tips on works the same way for accounts created on or after September 9, 2025: $0 platform fee, $0 processing to the org (verified April 2026, givebutter.com/pricing and Help Center). The wrinkle is what happens on the donor's screen. The default tip has been reported at 15%, displayed as a percentage rather than a dollar amount, and TruthInAdvertising argued in June 2026 that the prompt isn't meaningfully optional from the donor's side. Whether you agree or not, that is the trade: your zero is funded by a checkout experience some donors will notice and some will resent. Turn tips off and Givebutter becomes a normal paid platform—a flat 3% platform fee plus processing at 2.9% + 30¢ on cards (April 2026). Accounts opened before September 9, 2025 sit on a legacy 1%/3%/5% schedule we're not covering here.

Txt2Give is the one we have to flag rather than recommend. Its pricing page (April 2026) says $0/month, no platform fee, funded by an optional 15% donor tip, with Stripe processing at 2.3% + 30¢ for verified nonprofits and churches. That would make it a straightforward tip-funded platform. The problem: Txt2Give's own website states three different prices on three different pages—the pricing page says $0 plus tips, a church landing page says $19/month plus a 1% platform fee, and their own blog says $0/month with a 2.5% platform fee. We could not reconcile them. Maybe they migrated pricing and left stale pages up; maybe plans differ by entry point. Either way, a platform whose own site can't agree on what it costs is a buyer-relevant finding all by itself. If text-first giving is what you need, get current pricing from them in writing before you sign anything.

The honest accounting on all three: your org's line item is zero, but the money doesn't vanish. On a $100 gift with a 15% tip, your donor paid $115 for you to receive $100. Most donors are fine with that. Some aren't, and a few will tell you about it. The model works precisely because the cost is moved to the person least likely to scrutinize it—which is worth sitting with for a moment before you decide it's fine.

When the percentage never sleeps: free plans with per-gift rates

This is the oldest trick in software pricing, and it isn't even a trick—it's just framing. The plan is free. The rate is not, and the rate is where all the money is.

Tithe.ly's Free Giving plan is $0/month with 2.9% + 30¢ on cards, 3.5% + 30¢ on Amex, and 1% + 30¢ on ACH (July 2026—consistent across four secondary sources citing Tithe.ly's pricing page, though we could not retrieve it from Tithe.ly directly, so hold the figures a little loosely). Subsplash Giving standalone is $0/month at the non-exclusive rate of 2.99% + 30¢ on Visa and Mastercard, 3.5% + 30¢ on premium cards, and 1% on ACH (verified directly, July 2026—better rates exist, but they require an exclusivity commitment or volume tiers, which is not "free," it's a contract). Givelify charges 2.9% + 30¢ on Visa, Mastercard, and Discover and 3.5% + 30¢ on Amex, with no monthly fee, setup fee, or contract (Givelify Support Center, July 2026).

None of these numbers is hidden. What the "free plan" framing obscures is the shape of the cost: it scales with your success, forever. Run Tithe.ly's published card rate over $10,000 a month in giving at a $50 average gift and you're at roughly $4,200 a year—2.9% of $120,000, plus 30¢ on each of 2,400 gifts. Nothing about that is scandalous. It's what Architecture B costs. But calling the plan free while the org pays four figures a year is the exact gap between advertised price and real price that this whole pillar exists to close.

The percentage model has a genuine virtue, though: at low volume, it's the cheapest thing going. A church collecting $800 a month pays these platforms a few hundred dollars a year and no subscription. The model only turns against you as you grow—which brings us to the platforms built for exactly that moment.

When you pay a flat fee and your donors pay the rest

Nucleus charges a flat subscription and takes no cut of any gift. Processing—2.7% on cards, a flat 25¢ on ACH (Nucleus's own site and help center, July 2026)—is passed to the donor automatically and mandatorily. A church on Nucleus cannot choose to absorb those fees. Nucleus frames this as philosophy: the church always receives 100%, the donor always pays. One catch worth knowing before you call them: the subscription price itself isn't published. You'll have to ask.

RebelGive runs the same architecture—flat subscription, no cut of gifts, donor covers processing automatically through CardConnect—and we can't tell you what it costs either, for a worse reason. Four sources give four different prices ($29/month; $49/month plus 1.9%; $99/month or $79 annual; up to $219/month), RebelGive's own site publishes no tier table, and one of those sources contradicts RebelGive's central no-fees marketing claim. We rank nothing we can't verify. Get the number from them directly, in writing.

Notice what "free" means here: it's your percentage that's free, not your total. The org pays the subscription. The donors pay the processing, whether they'd choose to or not. On a $100 card gift a donor pays about $102.70; the church receives $100. It's the tip-funded model's cost-shifting with the optionality removed—and, to be fair to it, with the awkward 15% tip prompt removed too. A mandatory 2.7% is a much smaller ask of a donor than a suggested 15%.

At what volume does each stop being cheap

You don't need our spreadsheet—you need the shape of the curve.

Tip-funded (E) never stops being cheap for the org, at any volume. Its cost is denominated in donor experience, not dollars, and that cost doesn't scale down—every donor sees the prompt, whether you raise $500 a month or $50,000. The bigger you get, the more donors you're asking to tip a software company.

Free-plan-percentage (A/B) is cheapest at low volume and gets linearly worse forever. There is a crossover point—for every org, at some monthly giving level, a flat subscription beats 2.9%—and most orgs sail past it without noticing, because the percentage never shows up as a bill. It's just money that never arrives.

Flat-sub-donor-pays (D) inverts that: worst at low volume (a fixed monthly fee looms large over $1,000 a month in giving), better every month you grow, with the caveat that your donors are carrying the processing whether they like it or not.

Where's your crossover? That depends on your monthly volume, your average gift size, and how much of your giving arrives by bank transfer—which is exactly what our donation fee calculator computes. Put in your real numbers and it will show you what each architecture costs your organization per year. Five minutes, and you'll know which "free" is actually free for you.

Our recommendation, by situation

Registered 501(c)(3), comfortable with a tip prompt at checkout: Zeffy. It's the only platform here where nobody in your organization pays anything, the fine print is short, and we earn nothing for telling you so.

Church without its own 501(c)(3) registration, or small and just getting started online: Tithe.ly Free Giving or Givelify. At low volume the percentage is the cheapest honest structure available, there's no subscription to justify to a board, and you can leave when you outgrow it. See our church platform comparison for the fuller picture.

Growing church doing several thousand a month or more, with donors who'd rather cover a small fee than see a tip jar: get the unpublished subscription price from Nucleus, then run it against your volume in the calculator. Architecture D is built for exactly your trajectory—you just can't evaluate it until they tell you the number.

Anyone considering Txt2Give: not until they tell you, in writing, which of their three published prices is real.

The word "free" tells you who isn't paying. It never tells you who is. Now you know how to ask.