6 Money Habits Mark Cuban Says Retirees Should Quit

Mark Cuban may not be the first person you traditionally think of for retirement advice, but his strategies can often be adapted to those nearing or in their senior years. His life lessons often inspire people to make real changes.

The billionaire entrepreneur's approach to money emphasizes discipline, flexibility, and avoiding choices that can leave you vulnerable when your top earning years have passed. Even though his advice is not a substitute for a personalized retirement plan, some of his most repeated warnings may be especially useful for older adults looking to avoid costly financial mistakes.

Stop carrying credit card balances

Cuban has said that paying off debt is the "best investment you can make," and the math supports this position, especially in retirement. Eliminating a credit card with a 20% APR lets you avoid future interest charges at that rate on the balance you pay off. It's especially costly for retirees with fixed incomes who have allotted every dollar to important budget categories like health care or property taxes.

Prioritize the cards to pay down first by comparing the interest rates and tackling the costliest debt first. Just be sure not to pay it too aggressively; Cuban also recommends having cash available for emergencies.

Quit giving in to lifestyle inflation

In Cuban's younger days, he slept on friends' couches and floors, crediting some of his financial success to humble beginnings. While that same "live like a student" advice may not be literal for seniors, the same principles can apply.

For example, Cuban admits to keeping a "junker" car instead of driving something new right away. Retirement has many opportunities to similarly resist status-driven spending and luxury treats that drain the nest egg too quickly. This doesn't mean you can't be comfortable in retirement. Flag expenses that you could no longer realistically afford if your investment income fell or unexpected medical expenses piled up. The goal of this exercise is to preserve cash flow without living joylessly.

Don't treat an emergency fund like idle money

In a Vanity Fair interview, Cuban advised saving at least six months of income before investing in low-cost S&P 500 index funds. He believes that cash and short-term reserves serve a separate job from long-term investments. For seniors, this means having cash to cover emergencies without having to sell long-term investments if the market performs poorly.

Those close to retirement may even build up more than six months of cushion depending on health needs, insurance deductibles, and upcoming big bills (like home repairs). Near-term cash could be kept in an FDIC-insured account or other appropriate liquid vehicle.

Stop leaving every long-term dollar in cash

Emergency savings are useful (and necessary), but money designed for long-term goals should have a chance to grow. Remember that Cuban recommends buying low-cost, broad-market index funds, such as an S&P 500 index fund, which generally has lower operating costs than actively managed funds. These funds can be part of a balanced portfolio of cash, bonds, and stocks, based on your withdrawal schedule and risk tolerance.

If in doubt, get help from an advice-only fiduciary or tax professional, as they can help with allocation. It's not necessarily the type of growth that matters most, but that your cash isn't sitting stagnant under your mattress.

Don't use necessary cash for speculative bets

This piece of advice applies to speculative investments that may promise outsized returns. In fact, he has said an adventurous person might put 10% into cryptocurrency, only if they could afford to lose it entirely.

In a retirement context, risky investments always come after those necessities like rent, medical bills, or near-term retirement-withdrawal money. Whether you're interested in Bitcoin, individual stocks, private deals, or other unpredictable investments, the same rule remains: Core money is money you can't risk and should never be used on speculation.

Avoid depending on one income source without a backup

Cuban's history of success involves healthy cash reserves and investing time in learning about a business one cares about. He has stressed the importance of following passions, and Cuban has used this knowledge to invest in multiple businesses over the years.

Because of that, he has multiple income streams and never has to depend on just one. Most seniors don't have quite this opportunity, but the general idea is sound. Having just one income source, like Social Security, can leave you with less flexibility if expenses rise or other financial needs change. A good mix of incomes, from side hustles, rentals, consulting, portfolio withdrawals, or annuity income, leaves you less vulnerable to factors outside of your control.

Bottom line

Cuban's advice may be geared toward entrepreneurs looking to be the next billionaires, but his most practical tips are simpler than that. By avoiding leaks that reduce freedom, including high-interest debt, lifestyle creep, speculation, and single-income lock-in, seniors can breathe a little easier once they hit their retirement years.

Even if you already follow his guidance, a twice-yearly retirement check can help you stay within your retirement goals. A simple plan executed consistently may matter more than reacting to market headlines and celebrity advice.

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