Money and Happiness: How Much Is Enough According to Research
Introduction
The question of whether money buys happiness has two popular answers, and both of them are wrong. One says no—that money doesn't matter, that what truly matters lies elsewhere. Those who defend this view have almost never experienced the anxiety of not making it to the end of the month. The other says yes—that more money solves everything. Those who hold this view usually keep chasing more without ever arriving.
Research from recent decades offers a far more interesting answer: money is indeed linked to well-being, but in a way that changes dramatically depending on how much you have and what you spend it on. Understanding this relationship helps you make better decisions, both about how much to work and about how to use what you earn.
Money doesn't buy happiness, but a lack of money very easily buys unhappiness.
The $75,000 Study
In 2010, Daniel Kahneman and Angus Deaton, both Nobel laureates in Economics, analyzed responses from nearly 450,000 Americans and distinguished between two things we often conflate:
- Life evaluation: how satisfied a person is with their life overall.
- Emotional well-being: how they feel day to day—how much joy, stress, or sadness they experience.
They found that life satisfaction kept rising with income without a clear ceiling. Everyday emotional well-being, however, appeared to level off around an annual household income of $75,000 at the time. Beyond that figure, earning more did not seem to improve daily mood.
The finding became famous and was repeated widely, often in oversimplified form.
The Study That Contradicted It—and the Reconciliation
In 2021, Matthew Killingsworth published a study based on more than one million real-time well-being measurements collected through a smartphone app. He did not find that ceiling: emotional well-being kept rising with income, even above $75,000.
What happened next was remarkable. Instead of arguing from afar, Killingsworth and Kahneman, joined by psychologist Barbara Mellers, engaged in an adversarial collaboration: they worked together on the data to understand why they had reached different conclusions. They published their results in 2023.
They found that for most people, well-being continues to rise with income, roughly in proportion to its logarithm: doubling your income produces a similar boost whether you earn a little or a lot. Only among the unhappiest group—roughly the bottom 20% in emotional well-being—did the effect plateau above a certain threshold. For them, more money did not ease distress that came from other sources.
Diminishing Marginal Utility
A logarithmic relationship has a very clear practical implication: each additional dollar carries less weight than the one before it. Moving from $20,000 to $40,000 a year produces roughly the same improvement as moving from $100,000 to $200,000. For the first person, that is a $20,000 increase; for the second, $100,000.
In other words, escaping financial precarity changes life enormously. Continuing to raise your income once you already live comfortably improves life less and less per extra dollar—and often demands longer hours, greater stress, and less time for the very things that generate well-being.
How to Spend to Live Better
If the amount matters, so does how you use it. Several lines of research point in the same direction.
Experiences over things. Leaf Van Boven and Thomas Gilovich found in 2003 that experiential purchases—trips, concerts, meals with friends—tended to produce more happiness than material purchases of a similar price. Experiences are remembered, shared, and woven into who we are; objects quickly fade into the background.
Buying time. Ashley Whillans and her colleagues showed in 2017 that spending money to free yourself from unpleasant tasks—cleaning, errands, repairs—was associated with greater life satisfaction across different countries and income levels.
Spending on others. Elizabeth Dunn, Lara Aknin, and Michael Norton found in 2008 that people who spent a small amount on others or on charitable donations reported greater happiness than those who spent it on themselves.
The Positional Goods Trap
Some goods derive their value mainly from how they compare with what others have: the bigger car, the house in the most exclusive neighborhood, the pricier brand. Economist Robert Frank calls these positional goods. The problem is that when everyone competes for them, nobody wins: the car that once impressed stops doing so as soon as a neighbor buys a better one. Spending on status is a race with no finish line.
Defining "Enough"
The practical takeaway isn't that you should stop seeking higher income, but that it pays to know what you are seeking it for. Defining how much money you need to live with peace of mind, cover unexpected expenses, and build a reasonable future lets you judge much more clearly whether sacrificing health, relationships, or time to earn more is truly worth it.
Common Mistakes
Believing $75,000 is a universal ceiling. It isn't, and it also depended on the country and the era.
Concluding that money doesn't matter. For anyone living in financial precarity, it matters enormously.
Spending on status while expecting well-being.
Sacrificing time and relationships for extra income that improves life less and less.
Forgetting that mental health has many causes beyond money.
Conclusion
Money improves life, especially when it lifts you out of scarcity and when it is spent on experiences, free time, and other people. Beyond a certain point, each extra dollar adds less, and what you sacrifice to get it can cost more than it gives back. Review your spending from the past month and mark which purchases were experiences, which bought you time, and which were for others. Next month, shift a small amount from a material purchase into one of those three categories and notice how you feel.
References
- Kahneman, D., & Deaton, A. (2010). High income improves evaluation of life but not emotional well-being. Proceedings of the National Academy of Sciences, 107(38), 16489-16493.
- Killingsworth, M. A. (2021). Experienced well-being rises with income, even above $75,000 per year. Proceedings of the National Academy of Sciences, 118(4), e2016976118.
- Killingsworth, M. A., Kahneman, D., & Mellers, B. (2023). Income and emotional well-being: A conflict resolved. Proceedings of the National Academy of Sciences, 120(10), e2208661120.
- Van Boven, L., & Gilovich, T. (2003). To do or to have? That is the question. Journal of Personality and Social Psychology, 85(6), 1193-1202.
- Whillans, A. V., Dunn, E. W., Smeets, P., Bekkers, R., & Norton, M. I. (2017). Buying time promotes happiness. Proceedings of the National Academy of Sciences, 114(32), 8523-8527.
- Dunn, E. W., Aknin, L. B., & Norton, M. I. (2008). Spending money on others promotes happiness. Science, 319(5870), 1687-1688.