Kevin O’Leary’s retirement savings rule is blunt: take 15% of every dollar you earn, invest it, and let compounding do the work. He said that approach could turn a worker making $68,000 a year into a millionaire by age 65.
In an Instagram video earlier this year, O’Leary said, “Don’t spend it. Save it. Invest it. Let it compound. That’s the gift the market gives you.” He also said, “If you make $68,000 a year, the average salary, and you do this your entire life, just 15% of your paycheck, you’ll end up a millionaire at retirement at 65.”
Kevin O’Leary’s 15% calculation
The math behind the rule is straightforward. An American earning $68,000 would set aside about $10,200 a year, or roughly $850 a month, under O’Leary’s formula. If that money were invested from age 25 to 65, a 10% average return would grow it to about $5.3 million.
Even a lower return still produces a large balance. At 7%, the same monthly investing pattern would reach around $2.2 million by retirement. The point is not a guarantee of a specific ending balance; it is how much the combination of steady contributions and long time horizons can do when the deposits start early and never stop.
Kevin O’Leary versus current saving habits
That is where the advice runs into reality. The article says someone earning $68,000 saves roughly $3,000 a year toward retirement on average, far below the $10,200 O’Leary’s rule requires. It also says workers in the $50,000 to $79,999 income bracket have a 55% rate of feeling behind on retirement savings.
As of mid-2025, the overall personal saving rate sat at 4.4% of disposable income, and the median total contribution rate among 401(k) participants was about 11.5%. O’Leary’s 15% target sits above both figures, which explains why his formula sounds simple but lands hard against current habits.
Kevin O’Leary and household budgets
He framed the advice against a cost squeeze that leaves less room for retirement contributions. Take-home pay for a household earning $68,000 before taxes is about $52,000 to $54,000 after federal and state taxes, while average rent in the U.S. is $1,740 per month. Groceries can run as high as $400 a month for a single person, student loan payments average $434, and utilities are about $300.
That is why the monthly figure is the one most workers will notice first. O’Leary’s 15% rule implies $850 going out before the rest of the month’s bills are covered, and he argued that younger generations need to stop spending on unnecessary items. “The best piece of advice I can give anybody: Don’t buy stuff you don’t need,” he said.
The cleaner reading of O’Leary’s message is not that everyone can follow it today, but that the gap between a millionaire retirement and a normal paycheck begins with a much higher savings rate than many workers now manage. For anyone trying to test the rule against a real budget, the first step is simple: measure the percentage, then see what is left after rent, food, debt and utilities are paid.
