The one percent shift
Rees Calder · 23 April 2026 · 6 min read
The median UK household gives roughly £20 per month to charity. That's around £240 per year, or about 0.5% of median gross household income (ONS Family Spending Survey, 2024 edition, based on 2022-23 data). The US figure is slightly higher in absolute terms ($2,000-3,000/year for the median household per Giving USA 2024) but similar as a percentage of income: roughly 1-2% for the median donating household, and well under 1% for the overall median including non-donors.
A shift of 1% of gross household income to giving, for the median UK household earning roughly £35,000, would be £350 per year, or about £29 per month. That would more than double the current median. For the average US household, 1% of gross income (~$67,000 per Census 2023) is $670, which would roughly double what the median donating household gives.
This is not a rounding error. Scaled across all households, a 1% shift would add roughly £4-5 billion to UK annual giving (currently £13.9bn per CAF 2024) and $80-90 billion to US giving (currently $557bn per Giving USA). Those are transformative numbers, and they come from a budget line that most households wouldn't feel.
Why it's small and why it stays small
Three reasons the typical household gives less than 1%.
No budget line exists. Most households have explicit budget categories for rent, groceries, subscriptions, and transport. Almost none have a budget line for giving. The ONS Family Spending Survey tracks 14 primary categories: housing, transport, recreation, food, restaurants, household goods, clothing, communication, education, health, miscellaneous, alcoholic drinks, tobacco, and "other." Charitable donations are buried inside miscellaneous. If the national statistics framework doesn't give giving its own line, most household budgets won't either.
Giving is reactive, not planned. The CAF UK Giving Report (2024) shows that 58% of individual donations are triggered by direct asks (charity appeals, sponsored events, street fundraisers, disaster coverage). Only 24% come from standing orders or planned commitments. Reactive giving is inherently lower than planned giving, because it depends on being asked rather than on a decision you've already made.
The pain of loss is immediate, the reward of giving is not. Behavioural economics 101: Kahneman and Tversky's prospect theory (1979) shows that losses loom roughly twice as large as equivalent gains. Moving £29/month from your account to a charity registers as a loss. The good it does registers as an abstract gain. The felt experience is asymmetric, and it pushes giving lower.
Why 1% is the right target
Not 10%. Not 5%. One percent.
Giving What We Can promotes a pledge to give 10% of income, and their research shows that donors who take the pledge sustain it at remarkably high rates (85%+ after 3 years, per GWWC data 2024). But the median non-pledger doesn't jump from 0.5% to 10%. They jump from 0.5% to... still 0.5%. The gap between a pledge taker and everyone else is enormous.
One percent works as a target because it sits below the threshold of felt sacrifice. Shlomo Benartzi and Richard Thaler's "Save More Tomorrow" programme (2004, later published in the Journal of Political Economy) demonstrated that people will commit to future increases they'd reject as present ones. The principle: start with a commitment so small it doesn't trigger loss aversion, then let it grow.
Applied to giving: commit to 1% now, revisit in a year. If 1% felt fine (and for most households it will), move to 1.5%. The Benartzi-Thaler curve shows that commitments starting at 3% of income and auto-escalating by 1% per year reach 13% within a decade, and almost nobody opts out. The same architecture works for giving.
The problem with big targets is not that they're wrong. It's that they scare off the median household entirely, leaving the status quo at 0.5%.
Where the money goes if everyone shifts
A 1% shift across the UK would add roughly £4.5 billion to annual giving. For context:
The entire budget of GiveWell's recommended charities in 2024 was approximately $600 million. The total annual budget of the UK's six largest international development charities (Oxfam, Save the Children, CAFOD, Christian Aid, Tearfund, ActionAid) is approximately £2.5 billion combined.
A 1% shift, if directed to high-impact charities, would roughly double the funding available to the most cost-effective global health interventions. GiveWell estimates that its current top charities could productively absorb 2-4x their current funding before hitting diminishing returns (GiveWell Room for More Funding analyses, 2024).
The constraint isn't charity capacity. It's donation volume.
The three moves
Set up a standing order for 1% of your net monthly pay. Calculate it once. Automate it. Direct it to one charity you've actually evaluated, or to GiveWell's Maximum Impact Fund if you want someone else to do the evaluation. The standing order matters more than the destination, because it moves giving from reactive to planned.
Put "giving" as a line item in your budget. Literally. Whether you use YNAB, a spreadsheet, or a notes app, add a row called "giving" next to "subscriptions" and "restaurants." The CAF data on planned vs. reactive giving suggests this single act roughly doubles giving, because it makes the category visible.
Tell one person. Social accountability is the strongest predictor of sustained behaviour change in the charitable giving literature (Bekkers and Wiepking, "A Literature Review of Empirical Studies of Philanthropy," Nonprofit and Voluntary Sector Quarterly, 2011). Telling someone you've set up a giving commitment doesn't feel like bragging if you frame it as an invitation. "I started giving 1% of my income monthly, it's been surprisingly painless" is a sentence most people can say without cringing.
The honest caveat
One percent is a floor, not a ceiling. For anyone reading this who already gives 5% or 10%, this article isn't for you. It's for the large majority of households who give under 1% and who could shift to 1% without any lifestyle change.
The point of 1% is not that it's enough. It's that it's the number most likely to actually get adopted, and the Benartzi-Thaler research shows it naturally escalates from there.
One sentence
One percent of your income, automated, to one evaluated charity, is the highest-leverage giving move most households haven't made.
Sources used: ONS Family Spending Survey (2024 edition, FY 2022-23 data), CAF UK Giving Report (2024), Giving USA Annual Report (2024), US Census Bureau household income estimates (2023), Benartzi and Thaler "Save More Tomorrow: Using Behavioral Economics to Increase Employee Saving" (Journal of Political Economy, 2004), Giving What We Can pledge retention data (2024), GiveWell Room for More Funding analyses (2024), Kahneman and Tversky "Prospect Theory" (Econometrica, 1979), Bekkers and Wiepking "A Literature Review of Empirical Studies of Philanthropy" (NVSQ, 2011). Full links in the planning doc.