Latest / Behavioral Economics with Fexingo: Decision Making, Bias, and How People Really Spend / Why Your Brain Treats a Windfall as Play Money
Transcript
- Lucas: Tax refund season is basically a national spending holiday. People receive a check from the government and suddenly it feels like free money — even though it was their own over-withheld income all along. Luna: Right. And that same mental accounting happens with bonuses, gifts, even inheritance. Your brain categorizes that money differently than your regular paycheck. Lucas: Exactly. Behavioral economists call this 'mental accounting' — a term Richard Thaler popularized in the 1980s. The idea is that we don't treat all dollars as equal. We put them into mental buckets: this is my rent bucket, this is my fun bucket, this is my windfall bucket. And the windfall bucket has a much lower savings rate. Luna: So what's the actual evidence? Is it really that dramatic? Lucas: Yeah, there's a pretty compelling natural experiment from 2021. The US government began sending out advance Child Tax Credit payments — monthly cash payments of up to $300 per child to most families. It was effectively a temporary universal basic income for families with kids. And researchers tracked how people spent it. Luna: Right, that was the first time many Americans received a regular government cash transfer that wasn't framed as a refund or a tax break. Lucas: Exactly. And early data from the Census Bureau's Household Pulse Survey showed that while a majority used the money for essentials like food and rent, a surprisingly large share — about 30 percent — said they mostly saved or paid down debt. But here's the key: those same families did not report saving any extra from their regular paychecks. The windfall money went into a different mental account. Luna: So it's not that they couldn't save — it's that the framing of the money as temporary or extra made saving feel easier. Lucas: Precisely. And that's consistent with a concept from prospect theory called the 'house money effect.' The term comes from gambling — when you're playing with the casino's money, meaning winnings, you take bigger risks. Because it doesn't feel like your own money. The same psychological mechanism applies to windfalls: the pain of losing a windfall is less than the pain of losing money you earned through labor. Luna: So it's not just about labeling — it's about the emotional weight attached to the source. Money you worked for is heavy. Money that shows up in your bank account unexpectedly is light. Lucas: That's a great way to put it. And there's a study from 2017 by economists Arnaldo Camuffo, Daniele Mascia, and others that looked at how entrepreneurs allocate unexpected funding. They found that when startups received a government grant — a windfall — they were more likely to spend it on risky R&D projects than they would have if the money came from earned revenue. Same company, same money, different behavior based on source. Luna: It's almost like the brain has a spending hierarchy. Your salary is for bills and boring stuff. Bonuses are for treats. Inheritance is for a down payment or a big trip. Lucas: Right. And marketers and financial institutions are absolutely aware of this. That's why you get a 'cash back bonus' framed as a gift rather than a rebate — it feels like money you can spend freely. And it's why some tax preparers offer 'refund anticipation loans' that let you spend your refund before it arrives. They want you to treat it as play money. Luna: So what about the flip side? Can you trick your brain into treating a windfall more like regular income if your goal is to save it? Lucas: Yeah, there are some pretty simple mental hacks. One is to delay the spending decision. If you receive a bonus, wait a week before deciding what to do with it. The emotional salience fades, and you're more likely to treat it as fungible. Another is to rename it. Instead of calling it a 'bonus,' call it 'deferred compensation.' That small label change can shift it from the play-money bucket into the income bucket. Luna: I've also heard of people automatically diverting windfalls into a separate savings account that has a specific goal attached — like 'this is my emergency fund, not my vacation fund.' The label matters. Lucas: Absolutely. And there's actually a behavioral intervention that some companies use: they offer employees the option to split their bonus into direct deposit into checking and savings. Just having that choice at the moment of receipt increases the savings rate. Because it forces you to consciously assign the money to a bucket before the play-money feeling sets in. Luna: That makes sense. It's like setting a default ahead of time, before the house money effect kicks in. Lucas: Exactly. And this is where mental accounting isn't just a bias — it's a tool. If you understand that your brain is going to treat a windfall as play money, you can design your environment to counteract it. Pre-commit to saving a percentage. Or, if you want to enjoy it guilt-free, decide in advance what portion is for fun and what portion goes to long-term goals. Luna: It's a really practical insight for a lot of people. Especially around bonus season or after the holidays when people get cash gifts. Lucas: Yeah. Look, episodes like this — where we dig into how people actually think about money — they take a fair amount of research and prep. And honestly, one of the reasons we can keep this podcast ad-free and focused on the substance is that some listeners choose to support it directly. If walking through the economy with us has made something click, a couple of dollars a month genuinely helps keep these going. Luna: Yeah, it's a small thing that makes a real difference for us. No pressure at all. Lucas: Right. If you're inclined, you can find us at buy me a coffee dot com slash fexingo. Now, back to the windfall effect — there's one more nuance I want to touch on, which is how the size of the windfall changes the behavior. Luna: Oh, interesting. Small windfalls versus large ones? Lucas: Exactly. There's research showing that small windfalls — like a $50 gift card — are almost always spent on hedonic items, something fun. But large windfalls, like a $10,000 inheritance, are more likely to be saved or invested. The threshold seems to be around the amount that feels 'meaningful' relative to your regular income. If it's less than a week's pay, it's play money. If it's a month's pay or more, it becomes serious money. Luna: So the brain has a mental cutoff point. And that cutoff likely varies by person based on their income and financial situation. Lucas: Right. For someone earning $50,000 a year, a $1,000 bonus might feel big enough to save. For someone earning $200,000, that same $1,000 might feel like pocket change. So the behavioral prescription isn't one-size-fits-all. It's about knowing your own mental accounting thresholds and designing for them. Luna: I think the biggest takeaway for me is that just being aware of this bias can help. If you know your brain is going to treat a windfall as play money, you can pause and ask: is this really play money, or is this money that could serve a longer-term goal? Lucas: That's exactly the kind of reflective moment that behavioral economics is all about. Not to judge the choice, but to make sure the choice is actually yours — not just your brain's default wiring.