Lottery vs. Investing Calculator
Enter your weekly lottery spend and see what that same money would be worth if invested instead. The math is uncomfortable — but it's worth knowing.
$20/week on lottery tickets over 20 years costs $20,800. The same amount invested at 7% becomes over $108,000.
1 in 300M
odds of winning a major lottery jackpot
$105B
spent on lottery tickets by Americans annually
7× more
likely to be struck by lightning than win Powerball
The math of the lucky habit
Expected value is always negative
Lottery tickets return about 50–60 cents per dollar on average. Every dollar you spend is a negative expected value bet. Investing the same dollar in a diversified index fund has historically turned it into $7+ over 30 years.
The compound growth alternative
$20/week invested at 7% for 20 years = over $108,000. The same $20/week on lottery tickets = $20,800 spent, likely with minimal return. The gap widens every year thanks to compounding.
State lotteries are designed for states
Lottery revenue funds state budgets — education and infrastructure in many states. The return to players is intentionally low. You're not gambling against other players; you're donating to government with a slim chance of a refund.
How the opportunity cost is calculated
Invested value = weekly contribution × [(1+r)ⁿ − 1] / r, where r = weekly return rate and n = total weeks. This is standard future value of regular contributions formula.
Total spent = weekly × 52 × years. The gap = invested value − spent. This gap represents the real opportunity cost of the lottery habit over your chosen time period.