The latte factor, checked against the actual numbers
You have heard the advice: skip the daily coffee, invest the money, retire rich. It is repeated so often that it has become either gospel or a joke, depending on who you ask. Both camps are arguing about a number nobody has bothered to compute. So here it is, with the honest half that usually gets left out.
Published August 7, 2026 · updates automatically with our data
The arithmetic is real
A $5 coffee every single day costs $1,825 a year — about $152 a month. Invest that instead, for 30 years, at the rate the S&P 500 actually compounded at from 1979 to 2025 (9.4% a year), and you end up with roughly $305,000. You will have put in $54,750 of your own money; the remaining $251,000 is growth. That is not a rounding error, and anyone who tells you the latte factor is pure myth is skipping this paragraph.
And it is still not a plan
Now the half that rarely gets said out loud. $1,825 a year is 2.1% of the average US wage of $87,000. Cutting it is a real but small optimization — it does not close a gap in rent, childcare, healthcare or student debt, which are the line items that actually decide whether a budget works. If your budget does not balance, coffee is almost never the reason, and being told otherwise is both wrong and insulting.
The advice also quietly assumes a particular income. On the lowest average wage in our dataset — India, about $3,000 a year — the same $5-a-day habit would be 61% of annual income, which is to say it would not be a habit at all. “Just invest the coffee money” is advice written for people who have coffee money. That is a real constraint, not a character flaw.
What the number actually teaches
The useful lesson is not about coffee. It is that a small, boring, automatic monthly amount, left alone for decades, becomes a large amount — and that the mechanism is time, not thrift. $152 a month is $152 a month whether it came from skipping a drink, a subscription you forgot, a small raise you never absorbed into your lifestyle, or one renegotiated bill. The coffee is only the most photogenic example.
It is also worth being honest about the 9.4%. That is a long-run average with brutal years inside it — the index has had single years that erased more than a third of its value. Thirty years of calm growth is a modelling assumption, not a promise, and the sequence of good and bad years matters if you need the money at a fixed date.
Run it on your own habit
Rather than take our $5, use yours: the what-if-invested tool shows what a sum put into the S&P 500, gold or bitcoin at a past date would be worth today, with the real drawdowns visible — including the years you would have regretted it. For the forward-looking version with monthly contributions, use the compound interest calculator. Wage figures above are as of 2026-07-25.
See what your money would have become →
MoneyCurio is an educational project. Nothing here is financial or investment advice; figures are approximations built from public data — see the methodology page for sources.