Donor-covered fees can send 100% of a gift to your cause. See the mechanics, opt-in vs default, what share of donors cover, and the ethics.
How donor-covered fees work
A supporter gives $100 and the nonprofit does not receive $100. The card network, the processor and the fundraising platform each take a cut before the money lands, and the finance team sees $95 or so. Donor-covered fees turn that round: a small box at the point of giving lets the supporter add the fee on top, so she pays about $105, the organisation receives $100, and the gift stewarded is the gift she meant to make.
We think the interesting question is not whether to offer this but how, because the whole thing lives inside the giving form. A well-built smart checkout calculates the fee as the amount changes, shows the donor exactly what covering it means, and keeps it to one tap. On Whitelabel the all-in cost is 3.5 percent platform plus 1.1 percent processing, covered by the donor by default, so 100 percent of a gift can reach the cause; the full working is in our guide to nonprofit payment processing fees. The rest of this piece is about the two ways to present the box, what the data says about each, and where the line is.
Opt-in, default-on, and the data
There are two ways to present the choice. Opt-in leaves the box unticked and the donor decides to add the fee; default-on ticks it and lets her untick. The difference is not cosmetic. Studies of default settings consistently find that a pre-selected option is taken far more often, because most people accept the path of least resistance, and the same psychology that fills organ donor registers and pension schemes applies to a fee box.
Industry reporting from fundraising platforms suggests that when coverage is the default a large majority of donors leave it on, often well above half and frequently much higher, though the number to trust is the one from your own donors. The money is real: on a $10,000 month, covered fees mean hundreds of dollars reaching programmes rather than processing. Let your donation flows test both presentations and report the actual cover rate, rather than taking a vendor's marketing figure, ours included.
Transparency beats dark patterns
Default-on is only ethical when it is honest. A pre-ticked box is fine; a hidden, hard-to-find or deceptively worded one is a dark pattern, and it costs you the donor the moment she notices it on her statement. The standard is that she always sees the exact amount she is adding, understands in plain words that it is optional, and can untick it in one obvious action. Transparency here is not a compliance box; it is retention insurance.
There is a values question too, and it deserves naming. Some organisations prefer to absorb fees as a cost of doing business rather than ask donors for more. Others think letting a committed supporter cover a few dollars so her whole gift reaches the mission is the more honest choice. Both positions are defensible. What is not defensible is pretending the fees do not exist.
Stacking it with other levers
Fee coverage is one lever, not the machine. The same gift that reaches you in full can also be doubled if the donor's employer matches, and industry estimates suggest billions in matching gifts go unclaimed every year because nobody prompted the supporter. Connecting matching gifts detection to the giving form, powered by our partner Double the Donation, surfaces the employer match in the same moment the donor is covering the fee, so both effects land on one transaction.
Layering is what makes that possible. Whitelabel sits on top of your existing stack rather than replacing it, with two-way sync to Salesforce, HubSpot and Klaviyo so covered-fee and matched-gift data flow straight to the donor record, and PCI DSS Level 1, SOC 2 and HIPAA compliance through a Vanta-powered trust centre. There is no monthly fee and no contract. The $100 the supporter meant to give arrives as $100, and sometimes as $200.
Frequently asked questions
What percentage of donors cover the processing fee?
It depends heavily on how you present the option. When fee coverage is the default (pre-checked but plainly optional), industry reporting suggests a large majority of donors leave it on, often well above half. When it is opt-in and starts unchecked, uptake is meaningfully lower. The only reliable number is the cover rate from your own donors, so test both and watch the data.
Is it legal and ethical to pre-check the fee-coverage box?
Yes, default-on fee coverage is legal and widely used, provided it is transparent. The donor must clearly see the exact added amount, understand it is optional in plain language, and be able to uncheck it in one obvious action. The line you must not cross is hiding the charge or making it hard to decline, which damages trust and can trigger chargebacks.
Does covering fees really mean 100% of my gift reaches the cause?
Yes. When the donor adds the platform and processing fees on top of their gift, the nonprofit receives the full intended amount and the fees are paid separately by the donor. With Whitelabel the all-in cost is 3.5% platform plus 1.1% processing, covered by donors by default, so 100% of a gift can reach your programs.