If you have heard one number from the science of money and happiness, it is probably this one: $75,000. Past that, the story went, more money stops doing much for your day to day mood. The figure came from a 2010 paper by the Princeton psychologists Daniel Kahneman and Angus Deaton, and for over a decade it sat in the culture like a settled fact. You could quote it at dinner and nobody would push back.
I should say up front that I am a curious reader of this stuff, not a psychologist or an economist. What follows is reading and reflection on a few specific studies, all of them observational, measuring patterns across large groups rather than rules that predict what any one person, including you, will feel about their own paycheck.
The rule that stuck
Kahneman and Deaton’s paper had a careful title, “High income improves evaluation of life but not emotional well-being,” and they drew it from more than 450,000 Gallup responses. They split happiness into two things. One was how you rate your life overall when you stop to think about it. The other was your actual emotional texture day to day, the mood you are in while the day is happening. Life evaluation kept climbing with income. Emotional well-being rose too, then leveled off around $75,000.
That second half is the part that traveled. It flattered an intuition a lot of us already hold, that beyond some comfortable point, chasing more is a mug’s game. I believed it myself, partly because I had felt something like it.
I once chased income targets and the usual markers, including a new motorbike, and the arrival was oddly flat. It was nice for about a week, then it was just the thing I drove. I had wanted that motorbike in Vietnam for ages, finally bought one, had a great day, and within a fortnight it was just my bike.
What 1.7 million data points actually showed
In 2021, a researcher published a paper measuring the day to day mood part more directly. Instead of asking people to summarize how they felt yesterday, Matthew Killingsworth pinged them at random moments through an app and asked how they felt right then. His 2021 paper, “Experienced well-being rises with income, even above $75,000 per year,” drew on 1,725,994 real-time reports from 33,391 employed US adults.
He found no ceiling. Experienced well-being rose steadily with income. As put in the paper:
“There was no evidence for an experienced well-being plateau above $75,000/y, contrary to some influential past research. There was also no evidence of an income threshold at which experienced and evaluative well-being diverged, suggesting that higher incomes are associated with both feeling better day-to-day and being more satisfied with life overall.”
So now there were two careful studies, both in the same journal, pointing in opposite directions. The neat fact you may have repeated at dinner had a serious challenger.
The reconciliation, and who the ceiling was really for
Rather than trade rebuttals, Kahneman and Killingsworth ran what is called an adversarial collaboration, a deliberate effort by people who disagree to find out together where the truth sits, with the psychologist Barbara Mellers as arbiter. The 2023 result has a tidy title, “Income and emotional well-being: A conflict resolved“.
The resolution turned on splitting people up by how happy they already were. As Mellers put it, “The function differs for people with different levels of emotional well-being.” For most people, happiness kept rising with income. But for an unhappy minority, the modeled relationship rose and then flattened, around $100,000, the rough inflation-adjusted cousin of that old $75,000 figure. Killingsworth’s own summary is the line I keep coming back to: “for most people larger incomes are associated with greater happiness. The exception is people who are financially well-off but unhappy.”
Set that against the original 2010 data and something clicks. The earlier ceiling looks less like a wall where money stops working and more like an artifact of what that older measure was capturing, closer to the absence of misery than the presence of joy. Money relieves the kind of unhappiness that comes from not being able to pay for things, and once that relief is done, it is done. But that is not the whole of happiness.
The picture is not fully settled, either. A 2024 analysis by Mikkel Bennedsen argued the reconciliation’s conclusion is sensitive to where the income threshold is drawn, and suggested a plateau closer to $200,000. The debate over the exact shape continues.
Closing thoughts
Killingsworth’s other line is the one that keeps everything in proportion. Money, he said, “is just one of the many determinants of happiness. Money is not the secret to happiness, but it can probably help a bit.” That is a long way from “more money always makes you happier,” and a long way from “money stops mattering at $75,000.”
Perhaps what the evidence licenses is modest and a little freeing. Money keeps doing something for most people, well past the figure we were handed. It does less for those already unhappy, because the thing making them unhappy was probably never about money. The ceiling was real for some people, but not the universal wall we turned it into.
If you are reading this from a hard place financially, where the question feels less like a curiosity and more like pressure, a good counsellor or financial advisor is worth more than any study summary.
