The Latte Factor: Does Cutting Small Expenses Really Add Up?

A $5 daily coffee habit, invested instead at a 7% average annual return, grows to over $228,000 over 40 years — far more than the roughly $73,000 spent.

The 'Latte Factor,' a term coined by financial author David Bach, argues that small recurring expenses — not major purchases — are what quietly derail long-term savings. Critics note that cutting coffee alone will not make anyone rich; the real point is that any recurring expense, compounded over decades, represents meaningfully more than its face value.

The math is straightforward compound interest: $5/day is roughly $1,825/year. Invested annually at a 7% average real return, the running total compounds on itself, with growth accelerating in later decades as the base grows. The gap between money spent and money invested widens fastest in the final third of the time horizon — the same principle behind most retirement-account growth curves.

The concept works for any recurring cost, not just coffee: a $15/month subscription, a $60/month impulse-shopping habit, or a $200/month car payment upgrade. The size of the number changes; the compounding shape does not.

Critics rightly point out that housing, healthcare, and education costs matter far more to most household budgets than daily coffee. The Latte Factor is best used as an illustration of compounding, not a complete savings strategy on its own.

Want to see your own numbers? Try the free Life-Hours Calculator.