Mortgage or stocks: the opportunity cost at 30

A 29-year-old investor puts 60% of his salary into investments and wonders whether to buy a home. Pledging shares is pricey: up to 5.90% APR.

English · Original discussion in Spanish · Published

Mortgage or stocks: who pays the price of opportunity cost

He is 29, has been saving and investing 60% of his salary for seven years, and could buy a Porsche outright without breaking a sweat. His dilemma: buy a home in a high-demand area or keep 100% of his capital in the stock market. It's the million-dollar question for a generation that has seen indexes appreciate more than property.

The temptation to touch nothing

Some argue that taking on a mortgage is the ultimate trap: capital drained for the down payment, taxes on any sale, and a debt weighing you down while the market keeps hitting record highs. The most convinced talk about the opportunity of a lifetime to multiply wealth with selective moves. For this camp, true freedom is liquidity.

Leverage as a way out

At the opposite end, the numbers on a mortgage give you pause before selling the portfolio: if you can secure financing at 2.25%, borrowed money is cheaper than almost any consumer credit. There's no need to cash out; you can pledge securities as collateral. That said, the cost is no bargain: on platforms like MyInvestor the minimum APR is 3.56%, and pledging 100,000 euros pushes it up to 5.90%. The margin narrows.

The emotional factor and other routes

In between lie heterodox options: buying a rural plot and setting up a modular home, a formula that is heavily restricted in Catalonia, or the "marry rich" theory, which the protagonist himself mentions without blushing. What's clear is that the decision isn't purely mathematical: status, the urgency to move out and family dynamics weigh as much as the APR.

While the stock market promises compound returns and property offers ground beneath your feet, the real opportunity cost remains a wildcard nobody quantifies until it's too late. And amid that uncertainty, neither the mortgage nor the portfolio guarantees lasting peace of mind.

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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (10 replies).

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