Ask someone how to spot a good charity and you'll usually get the same answer: "look for one where the money goes to the cause, not to overhead." It's the most repeated piece of giving advice in the world. It's also, taken on its own, one of the most misleading — and the people who say so most emphatically are the very watchdogs whose ratings popularised the ratio in the first place.
Where the obsession came from
Overhead ratios became the default charity metric for an unglamorous reason: they were the only number anyone could compute at scale. Tax filings disclose spending by category, so program-vs-admin percentages could be calculated for every charity in the country without evaluating a single program. The number was available, comparable, and easy to explain. Availability, not insight, made it king.
By 2013 the distortion was bad enough that the heads of GuideStar, Charity Navigator, and BBB Wise Giving Alliance published an open letter to the donors of America — titled, literally, "The Overhead Myth" — pleading with donors to stop equating low overhead with effectiveness. When the raters tell you their most famous number is being misread, it's worth listening.
What the ratio genuinely can't tell you
Imagine two food programs. One spends 95% of its budget on food purchased at retail and distributed haphazardly, with no evaluation. The other spends 80% on food bought wholesale through a logistics operation, plus staff who measure which neighbourhoods are actually underserved. The first has the better ratio and the worse outcome — the second feeds far more people per dollar. The ratio cannot see this difference. It measures how money is categorised, not what it accomplishes.
Worse, punishing overhead punishes the ingredients of competence: trained staff, working software, financial controls, and evaluation — the very thing that lets anyone know whether programs work. The sector even has a name for the result: the "nonprofit starvation cycle," in which charities underinvest in capacity to keep a ratio pretty, then underperform because they lack the capacity.
What it can tell you
The ratio isn't useless — it's a screen, not a score. Extremes are informative: an organisation spending half its budget on fundraising has a business model problem, whatever its mission. Trend matters too: a ratio deteriorating year after year invites questions a stable one doesn't. And occasionally structure makes the number genuinely meaningful — the Against Malaria Foundation runs a model where separate institutional donors cover operating costs so that 100% of public donations buy bednets. That's real, and worth knowing. It's just not the reason AMF tops effectiveness rankings; the reason is two decades of evidence that bednets cheaply prevent deaths.
What to look at instead
- Outcomes per dollar. Does the organisation publish what a unit of result costs — and does the claim survive contact with its own reports? (Our rule: we only display figures the organisation itself publishes.)
- Evidence quality. Independent evaluations, randomised trials where they exist, or at minimum honest self-measurement with published misses.
- Transparency. Current annual reports, audited financials, named leadership. Organisations behave better in daylight they create themselves.
- Scale and room for funding. Can this organisation absorb your dollars and turn them into more of what works?
This is why our composite score treats program spending as one ingredient among several rather than the headline. A charity that spends 78% on programs and can demonstrate what those programs achieve will generally serve your values better than one that spends 92% and can't.