If I Were 25, I’d Put $300 Per Month Into This 1 ETF and Not Touch It for 40 Years
One fund, one automatic decision, and four decades of doing absolutely nothing sounds too simple to be serious investing advice. But the math behind this particular combination has a way of changing minds.
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If I could hand my 25-year-old self one instruction and walk away, it would be this: Open a Roth IRA, set up a $300 monthly auto-transfer, buy the Vanguard S&P 500 ETF (NYSEARCA:VOO) and don’t touch it until you’re 65.
One fund. One decision. Four decades of compounding doing the heavy lifting while you get on with your life. The headline says one ETF, and I mean it. A single line item. Funded automatically. Held through everything.
What You Are Actually Buying
VOO tracks the S&P 500. Every $300 contribution buys you a proportional slice of the 500 largest publicly traded U.S. companies, weighted by market value. You end up owning the mega-cap technology leaders, the big banks, the healthcare giants, the industrials, and the consumer brands, all in one holding. When one company falters, the index rebalances around it without you lifting a finger.
The price of admission is almost nothing. Vanguard’s most recent fact sheet lists an expense ratio of 0.03%, one of the lowest available anywhere. Over 40 years, that gap versus a 1% actively managed fund becomes life-changing money.
Why Cost Matters So Much Over 40 Years
Fees compound just like returns, only against you. A 0.03% drag sounds trivial. Applied every year for four decades against a growing balance, the difference between a near-zero-fee index fund and a 1% active alternative can consume a meaningful share of your final balance. Costs are the variable within your control, and VOO lets you pay almost nothing.
Behavior Is the Real Case
The math argument is easy. The behavioral one is harder and more important. A $300 automatic monthly draft removes the two decisions that wreck most young investors: when to buy and whether to buy at all. You buy in September when prices are up. You buy in March when prices are down. Over 40 years, you accumulate shares across every kind of market.
Look at what the last decade already produced for shareholders who sat still: VOO returned 318.58% over 10 years and 85.66% over five years. Year to date the fund is up 13.45%, with a 16.39% gain over the trailing year. Those numbers went to people who did nothing.
Put It in a Roth IRA
The wrapper matters almost as much as the fund. Hold VOO inside a Roth IRA and qualified withdrawals in retirement are entirely tax free. The rule is straightforward: the account must be open at least five years, and you generally have to be 59½ or older when you pull the money. At 25, both conditions will be checked off long before you touch a dollar. You are trading a tax deduction today for zero tax on 40 years of growth. That is one of the best deals in the tax code.
Growth Now, Income Later
Do not buy VOO expecting a paycheck. VOO pays dividends quarterly, with a trailing 12-month payout of roughly $7.35 per share and a forward annualized distribution near $7.85. Against a share price around $706 as of Sept. 24, the yield is modest. In your accumulation years you reinvest every distribution and let the share count grow. Decades later, that same holding throws off a much larger income stream in dollar terms because the base has multiplied.
Risk to Respect
A 40-year horizon includes brutal drawdowns. You will see 30% and 50% declines. You will read headlines telling you this time is different. The plan only works if you keep buying while your balance is shrinking and your friends are panicking. If you sell during the first real crash, the strategy is broken. The single behavior that ruins this trade is capitulating at the bottom and waiting to feel safe before buying back in. Feeling safe is expensive.
Set the auto-draft. Buy VOO. Ignore your account for 40 years. If you are 25, that is the trade.
Contact [email protected] for any questions or corrections.
Joel South covers large-cap stocks, dividend investing, and major market trends, with a focus on earnings analysis, valuation, and turning complex data into actionable insights for investors.
He brings more than 15 years of experience as an investor and financial journalist, including 12 years at The Motley Fool, where he served as an investment analyst, Bureau Chief, and later led the Fool.com investing news desk. He has also co-hosted an investing podcast and appeared across TV and radio discussing market trends.
