The answer comes down to one number: your car loan's interest rate.
Selling $1,000 of Royal Caribbean stock bought at $20 a share to pay off a car loan hinges on one variable: the loan's interest rate versus expected market returns.
"Paying off the loan provides a guaranteed 5% return as you're avoiding 5% interest," said Quentin Fottrell, The Moneyist columnist at MarketWatch. "Keeping the investment might produce a 5% return, but the actual result could be 30% over the next few years or, if you look at a year like 2022, it could be a loss of 20%."
The stock now trades near $320, up from roughly $260 in May. The math shifts with the rate: a 10% car loan argues for immediate payoff, while a 2% loan favors keeping the money invested, since a diversified portfolio's long-term return potential may exceed the low cost of debt. At 7%, paying down the loan becomes attractive. The investment return is not only uncertain but also potentially taxable — selling from a taxable brokerage account triggers capital gains tax on long-term gains.
The decision carries real consequences. Selling locks in gains but forfeits future appreciation potential, while keeping the money invested exposes it to market volatility. The reader also needs to consider whether an emergency fund exists before allocating $1,000 to debt payoff.
Fottrell's guidance draws a clear line between guaranteed and uncertain returns. Paying off a 5% car loan delivers a risk-free 5% return, while keeping the same $1,000 in stocks subjects it to market swings — the S&P 500 fell roughly 20% in 2022, a reminder that equity returns are never assured. The reader's own observation that stocks feel overheated adds another layer: selling at $320 after buying at $20 locks in a 1,500% gain, but the capital gains tax on that sale reduces the net proceeds. For long-term holdings, the federal capital gains tax rate ranges from 0% to 20% depending on income, plus potential state taxes, which further narrows the gap between the guaranteed debt payoff and the uncertain market return.
The emergency fund question is equally important. Fottrell asks whether paying off the $1,000 car loan balance is actually an emergency — and argues it is not. Building or maintaining an emergency fund should take priority over debt payoff when the loan rate is reasonable and market returns are expected to exceed the cost of borrowing. A standard rule of thumb suggests keeping three to six months of living expenses in liquid savings before directing extra cash toward debt reduction or additional investing.
The Nvidia Precedent
The column cites a reader who sold Nvidia stock near its high after the position grew too large, seeing $25,000 daily swings. That reader moved proceeds into a money-market fund while waiting for a better entry point. Nvidia rose roughly 10% in the month following the sale — a reminder that timing the market carries opportunity cost even when the decision feels right. The Nvidia example also illustrates a broader principle: even when a sale feels justified by valuation concerns, the market can keep climbing, and cash sitting on the sidelines earns a money-market yield that may lag equity returns.
Dollar-Cost Averaging as a Framework
The reader's stated commitment to dollar-cost averaging supports the case for staying invested. Investing a fixed amount over time removes the need to predict whether today is the perfect entry point, relying instead on the long-term trajectory of markets. But Fottrell cautions that dollar-cost averaging does not automatically make it the best financial decision — the interest rate on the car loan remains the decisive factor. For this reader, the $1,000 represents a small fraction of overall holdings, which means the decision is more about psychological comfort than financial necessity.
This article is for informational purposes only and does not constitute investment advice.