You think buying S&P 500 or Nasdaq 100 ETFs lets you lie back and wait for retirement? Answer three questions first: how much do your returns shrink when the TWD appreciates? Did you stop your DCA during the 2022 rate-hike storm? Do you know the fee gap between Taiwan-listed and overseas-listed S&P 500 ETFs?
S&P 500 is fine; the problem is the way you use a Taiwan salary to DCA into US ETFs. This isn’t a small mistake; it’s a structural error that will make you look back in 10 years to find you’ve wasted your time and may even be worse off than not investing.
Carve this premise into your brain first
S&P 500 ETFs track the top 500 US companies by market cap; Nasdaq 100 is the 100 largest non-financial companies, with tech exceeding 50%. There is only one core logic: long-term holding, diversification, low-cost compounding. Not watching the screen daily, not breaking out price moves, not waiting for a low to buy. Carve that premise in first; the four fatal mistakes below all start from violating this core logic.
The 20-year math: perfect execution vs the real retail investor
Suppose you are a Taiwanese office worker with a NT5,000 per month to DCA an S&P 500 ETF. From 2003 to 2023 — full 20 years — total invested is NT1.2 million. **With perfect execution and S&P 500's annualized 9–10%, after 20 years you'd have about NT3.5M–3.8M.**
But reality? Dalbar’s research shows that the average retail investor’s actual return is 1.5% to 2% lower than the fund itself. If your actual annualized drops from 9% to 7% due to execution mistakes, after 20 years you have only about NT800K–1.1M. That’s not a small number; that’s the money lost to your execution errors, taken directly from your pocket.
Extreme case: the financial crisis crucible
In the 2008 financial crisis, the S&P 500 fell nearly 57% from peak. If you started DCA in late 2007, by March 2009’s low your paper loss exceeded 40% — many people stopped their contributions or even redeemed at this point, locking in losses. But if you held through and kept contributing until 2013, you not only recovered but turned profitable; those who redeemed at the bottom missed the largest subsequent rally.
In the 2020 COVID crash, the S&P 500 dropped 34% in one month, and returned to new highs five months later. Those who panic-sold in March missed the entire rebound. ETF returns are not for those who read the market right; they are for those who hold on and don’t move.
The 4 fatal mistakes: the ones who can’t hold are human
Mistake 1: Using DCA as a “buy more on dips” tool
Under Taiwan financial regulation, DCA is defined as investing a fixed amount at fixed intervals, buying regardless of market ups and downs. Its core advantage is dollar cost averaging — automatically buying more units at lows and fewer at highs through long-term regular investing, reducing the average cost.
But many Taiwanese investors misuse this tool, thinking that since you buy more units when the market is down, you should buy more on dips and skip when it rises. The fatal premise of this logic is that you must be able to tell whether the current drop is deep enough or has further to fall — in 2012 the Nasdaq 100 dropped 33%, you thought it was the bottom and bought more, but it eventually fell over 35%, and you bought halfway down the slope. Once you start selectively contributing, you’ve gone from a passive investor to an active market timer — which is what you most wanted to avoid from the start.
Correct approach: set up DCA, contribute on a fixed schedule regardless of up or down, do not add, do not stop, do not redeem.
Mistake 2: Buying ETFs without calculating what you actually pay
Taiwanese investors often choose ETFs solely based on index tracking, completely ignoring cost structure. In Taiwan, there are two main ways to buy US S&P 500 ETFs:
- Taiwan-listed domestic ETFs (e.g., Yuanta S&P 500): include FX hedging, convenient for small amounts, but higher embedded fees
- Overseas-listed US ETFs (e.g., VOO, VTI): extremely low management fees, small tracking error, but watch FX and broker fees
The total fee gap between domestic and overseas can be 0.3% to 0.8%, which becomes huge over 20 years of compounding. Many also overlook the “FX hedging cost” — most domestic ETFs have FX hedging that eats another 0.1% to 0.2%.
Mistake 3: Ignoring the TWD exchange rate as a hidden variable
You earn in USD, but your costs and expenses are in NTD. When the TWD appreciates against USD (USD weakens), your USD assets convert back to fewer NTD; when TWD weakens (USD strengthens), your USD assets get an extra FX gain.
From 2020 to 2021, USD/TWD dropped from 30 to 27.5, during which your S&P 500 rose 50%, but in NTD you got only about 30%. This is the most common blind spot for Taiwanese investors buying US ETFs — you see the US market rally hard, but when you open your NTD account you haven’t made much.
Mistake 4: Emotional breakdown is where losses begin
In the 2022 rate-hike storm, Nasdaq 100 fell 33% for the year, S&P 500 dropped 19%. Your account shrinks by 1/5 to 1/3 in a single year — the feeling is: you diligently saved NT$6,000 each month, but your account evaporated more than you saved. Many people stop or sell at the worst moment, wiping out the long-term compounding advantage. FSC data shows the average holding period of Taiwanese fund investors is short; many redeem when the market crashes hard.
The psychological threshold matters more than index choice. Choosing an index you cannot emotionally hold is like buying a plane ticket you’re afraid to board; you’ll bail at the first turbulence and never reach the destination.
The correct way for Taiwanese investors to buy US ETFs
Step 1: Choose the right tool path. Large capital, can open an overseas broker: choose VOO or VTI (0.03% management fee). Small capital, don’t want to exchange currency: choose a Taiwan-listed S&P 500 ETF, but mind the total expense ratio.
Step 2: Set a fixed contribution, regardless of up or down. Schedule the debit 3–5 days after salary hits the account; base the amount on money you are certain you won’t touch.
Step 3: Manage FX exposure. Don’t try to predict FX trends, but at least understand that more than half of your returns may come from — or be eaten by — exchange rates. Over the long term, USD assets and TWD assets have lower correlation, which is itself part of diversification.
Step 4: Adjust equity-bond ratio by age and emotional tolerance. Younger investors can tolerate higher volatility and go 100% stocks; those near retirement should move part of their holdings to bonds. Your ability to hold for 20 years is 10 times more important than which S&P 500 ETF you pick.
Why Taiwanese investors fall into this trap particularly easily
90% of Taiwan’s S&P 500 introductions tell you “the US stock market goes up over time” — that statement isn’t wrong, but they completely ignore the structural issue of Taiwanese investors using NTD to buy US stocks. You think you’re buying US economic growth; in reality you’re buying the product of three variables: “US economic growth × USD/TWD exchange rate × how many years you can hold on”. When you only see the first variable, the seeds of loss are already planted.
This article is for financial education purposes only and does not constitute investment advice. All investments carry risk, past performance does not guarantee future returns, and actual outcomes may differ materially from the calculations in this article due to market changes, FX volatility, and personal execution. Before making any investment decision, please evaluate your personal financial situation and risk tolerance, and consult Taiwan-licensed financial advisors or accountants.
Disclaimer: This article shares investment and financial concepts and information, and does not constitute any specific investment, tax, or legal advice. Markets carry risk; invest with caution and make independent judgments based on your own risk tolerance, consulting professional advisors as needed.
Tags
S&P500, DCA, US Stock ETF, Dollar-Cost Averaging, Nasdaq 100, VOO, VTI, Retirement Investing, USD Assets, US Stock Investing, Hidden Costs, Investment Psychology
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