Does Money Buy Happiness?

What research actually says about the link between income and happiness, and why the answer is more interesting than a simple yes or no.

For most of its history, economics assumed that more income meant a better life and left it at that. Over the last few decades, economists have started asking people directly how their lives are going. This field studies subjective wellbeing - how people themselves judge and experience their lives - and one of its first questions was the oldest one of all: does money buy happiness? The honest answer is “yes, but less than you might think, and not in every way.”

Two kinds of happiness

Researchers usually separate two things that everyday speech lumps together. Life evaluation is how satisfied you are with your life as a whole when you step back and think about it. Emotional wellbeing is how you feel moment to moment - how often you feel joy, calm, stress, sadness or worry during an ordinary day.

Money relates to these two differently. Income tends to be strongly linked with life evaluation: richer people, on average, rate their lives higher. The link with day-to-day emotions is weaker. A famous 2010 study by Daniel Kahneman and Angus Deaton, using survey data from the United States, found that life evaluation kept rising with income, while everyday emotional wellbeing seemed to level off at around 75,000 dollars a year. Later research, including a 2023 study co-written by Kahneman with researchers who had disagreed with him, found that for most people everyday feelings kept improving with income too, and the flattening showed up mainly among the least happy group. The debate continues, which is itself a useful lesson: this is a live area of research, not settled fact.

Why each extra dollar matters less

Almost every study finds a pattern economists call diminishing marginal utility: each additional unit of something adds less benefit than the one before. An extra 1,000 dollars transforms life for a family that is struggling to afford food and rent. The same 1,000 dollars barely registers for a family that already has plenty.

Researchers often capture this by looking at percentage changes rather than amounts. Roughly speaking, doubling your income is linked to a similar rise in life satisfaction whether you start poor or rich. But doubling income is easy to do from a low base and very hard from a high one, which is why money matters most where it is scarce.

The same raise, two different lives

Imagine two workers each receive a raise of 5,000 dollars a year. The first earns 10,000 dollars, so the raise is a 50 percent increase - enough to move into safer housing, buy medicine without worry, or keep a child in school. The second earns 200,000 dollars, so the raise is only about 2 and a half percent. Both are 5,000 dollars better off, but research consistently suggests the first worker's life satisfaction rises far more.

What money does and doesn’t do

Money seems to help wellbeing mostly by removing problems: hunger, insecure housing, untreated illness, and the constant stress of not knowing whether you can pay the bills. It gives people security and choices. What money does less well is create lasting joy on its own. Relationships, health, meaningful work, and a sense of control over one’s life are among the strongest predictors of wellbeing in almost every country studied, and many of them are only loosely tied to income.

The way money is used also matters. Later lessons in this module look at how spending on time, experiences, and other people can bring more happiness than spending on possessions.

Concluding that money doesn't matter

A common mistake is to hear "money doesn't buy happiness" and decide income is unimportant. For people living in poverty, more money is one of the most reliable ways to improve wellbeing. The more accurate statement is that money matters a lot when you don't have enough and progressively less as you gain more.

Key takeaways

Subjective wellbeing is how people themselves judge and experience their lives.
Income is closely linked with overall life evaluation and more weakly with day-to-day emotions.
Because of diminishing marginal utility, extra money matters most to people who have little.
Relationships, health, and purpose are powerful drivers of wellbeing that money only partly buys.