If you're building a portfolio, adding international stocks isn't just a good idea—it's essential. But picking the right fund can feel overwhelming. After years of managing my own investments and seeing clients get tripped up, I can tell you the single most important filter to start with is the expense ratio. Get that wrong, and you're giving away a chunk of your future returns for no good reason. Let's cut through the noise. For most investors seeking broad, market-cap-weighted exposure to companies outside the U.S., the race boils down to two outstanding, low-cost ETFs: Vanguard Total International Stock ETF (VXUS) and iShares Core MSCI Total International Stock ETF (IXUS). Their expense ratios are virtually identical (0.07% and 0.08%, respectively), making them the undisputed champions in the low-cost international ETF arena.
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Why Low Expense Ratios Matter for International ETFs
Think of the expense ratio as a yearly toll fee just for owning the fund. It's deducted automatically, so you don't see a bill, but it silently drags on your performance. With international investing, keeping costs low is even more critical. Why? The long-term expected returns for developed international markets are generally considered to be slightly lower than for the U.S. market. When your base return potential is lower, every basis point of fee takes a larger relative bite out of your profits.
Let's put some numbers on it. A seemingly small difference of 0.20% might not look like much. But on a $100,000 investment over 30 years, assuming a 7% annual return, a fund with a 0.07% fee leaves you with about $761,000. A fund charging 0.27% leaves you with $708,000. That's a $53,000 difference—paid for absolutely nothing in added performance or service. The data from sources like Morningstar consistently shows that low expense ratios are one of the few reliable predictors of future fund performance relative to peers.
Top Contenders: A Side-by-Side Comparison
Forget the dozens of options. When you filter for broad diversification (covering both developed and emerging markets) and an expense ratio under 0.10%, you're left with a shortlist of heavyweights. Here’s where the real decision-making starts.
| ETF (Ticker) | Expense Ratio | Index Tracked | Number of Holdings | Key Geographic Focus | AUM (Approx.) |
|---|---|---|---|---|---|
| Vanguard Total International Stock ETF (VXUS) | 0.07% | FTSE Global All Cap ex US Index | ~8,800 | Japan, UK, Canada, China, France | $70 Billion |
| iShares Core MSCI Total International Stock ETF (IXUS) | 0.08% | MSCI ACWI ex USA IMI Index | ~4,800 | Japan, UK, China, Canada, France | |
| Schwab International Equity ETF (SCHF) | 0.06% | FTSE Developed ex US Index | ~1,500 | Japan, UK, Canada, France, Switzerland | $40 Billion |
Data sourced from issuer fact sheets (Vanguard, iShares, Charles Schwab). AUM = Assets Under Management.
VXUS vs. IXUS: The Nuances That Actually Matter
At first glance, VXUS and IXUS look like twins. Their performance charts are nearly indistinguishable. But the devil is in the details, and one detail in particular trips people up: small-cap exposure.
VXUS tracks an index that includes small-cap stocks. IXUS tracks an index that includes small, mid, and large-cap stocks (what MSCI calls "Investable Market Index" or IMI). In practice, both give you massive diversification, but VXUS technically holds more companies. Does this make a meaningful difference in returns? Historically, barely a whisper. The 0.01% fee difference is more theoretical than practical.
So how do you choose? It often comes down to your brokerage. Are you already at Vanguard? Sticking with VXUS keeps things simple. Heavily invested in the iShares ecosystem at Fidelity or another platform? IXUS might integrate better. I've held both in different accounts, and I can't say I've noticed a performance gap worth worrying about.
The SCHF Caveat: A Common Misstep
Notice Schwab's SCHF in the table? Its 0.06% fee is the lowest of the bunch. That attracts many cost-conscious investors. But here's the catch most beginners miss: SCHF excludes emerging markets like China, India, Taiwan, and Brazil. It's a developed-markets-only fund.
If you pair SCHF with a separate emerging markets ETF, your combined expense ratio will likely end up higher than just using VXUS or IXUS. More importantly, you now have two funds to manage and rebalance. For true one-fund, set-and-forget international exposure, SCHF alone doesn't cut it. I made this mistake early on, thinking I was saving on fees, only to realize my portfolio lacked a crucial growth segment.
How to Choose the Right International ETF for You
This isn't about finding a mythical "best" fund. It's about finding the best fund for your specific situation. Follow this decision tree.
First, define your goal. Are you looking for a single ETF to represent the entire non-U.S. stock world for the next 30 years? Or are you building a more nuanced portfolio where you want to control your exposure to developed Europe, Asia, and emerging markets separately?
For the "One and Done" Investor: Your choice is straightforward. Pick either VXUS or IXUS. Flip a coin if you have to. The key is to commit, invest regularly, and ignore the short-term noise. The difference between them over your investing lifetime will be negligible compared to the benefit of having that diversified exposure in the first place.
For the "Control-Seeking" Investor: You might consider splitting the allocation. Perhaps 80% in a low-cost developed markets fund like SCHF or VEA (Vanguard FTSE Developed Markets ETF, 0.08%) and 20% in a low-cost emerging markets fund like VWO (Vanguard FTSE Emerging Markets ETF, 0.08%). This gives you the ability to overweight or underweight regions as you see fit. But be honest with yourself—this requires more work and discipline. Most people are better off with the single fund.
Check your brokerage's commission structure. While most major platforms now offer commission-free trading for their own ETFs and many competitors', it's still worth verifying. There's no point in saving 0.01% on a fee if you pay a $5 commission every time you buy.
Common Pitfalls to Avoid When Investing Internationally
After watching investors for years, I see the same errors repeated. Here’s how to sidestep them.
Pitfall 1: Chasing Past Performance. "International stocks have lagged the U.S. for years, so why bother?" This is a classic rearview mirror mistake. Cycles turn. The decade of U.S. outperformance won't last forever. Diversification is about preparing for an uncertain future, not betting on the recent past. The period from 2002 to 2007 saw strong international outperformance. It will happen again.
Pitfall 2: Overcomplicating with Too Many Funds. I've seen portfolios with an international large-cap ETF, an international small-cap ETF, a European ETF, an Asia-Pacific ex-Japan ETF, and a separate emerging markets ETF. The overlap is enormous, and the complexity is unnecessary. You're not gaining meaningful diversification; you're just creating a spreadsheet nightmare. Start simple. One broad fund is almost always enough.
Pitfall 3: Ignoring the Tax Implications in a Taxable Account. This is a pro-level tip many blogs gloss over. International ETFs often pay higher dividends than U.S. funds. Those dividends may be subject to foreign taxes, which the fund itself pays. Fortunately, both VXUS and IXUS are structured to pass through the foreign tax credit to you. When you file your taxes, you can claim a credit for those taxes paid, which reduces your U.S. tax bill. It's a small benefit, but it's a reason to hold these in a taxable account over a more tax-inefficient investment. Keep your year-end tax documents from your broker; they'll have the information you need.
Your International ETF Questions, Answered
I'm worried about currency risk with international ETFs. Should I look for a hedged version?
Currency-hedged ETFs (like HEDJ or DBEF) are a specialized tool, not a default choice. The hedging process itself has a cost, which raises the fund's expense ratio. Over the very long term (decades), currency fluctuations between major economies tend to balance out. For a long-term core holding, accepting the currency risk is part of the deal and can sometimes boost returns when the U.S. dollar weakens. Hedging is more appropriate for short-term goals or if you have a specific, strong conviction about dollar strength.
How much of my stock portfolio should be in an international ETF like VXUS?
There's no magic number, but the global market cap weight is a rational starting point. As of now, non-U.S. companies make up about 40% of the world's total stock market value. Major target-date funds from Vanguard and others allocate 40% of their stock portion to international. A common range for individual investors is between 20% and 40% of their total stock allocation. If 40% feels too high, start with 20% or 25%. The act of allocating something is far more important than hitting a perfect percentage.
What's the real-world difference between a 0.07% and a 0.15% expense ratio on a $10,000 investment?
Let's make it concrete. On $10,000, a 0.07% fee costs you $7 per year. A 0.15% fee costs $15. That's an extra $8 annually. Over 20 years, assuming your investment grows and you continue contributing, that difference compounds into hundreds, if not thousands, of dollars lost to fees. You get nothing extra for that $8—no better management, no higher returns. It's pure drag. This is why comparing fees down to the hundredth of a percent matters with core, long-term holdings.
Do these ETFs pay dividends, and how are they taxed?
Yes, they pay quarterly dividends. The yields are typically higher than the S&P 500. In a taxable account, these dividends are generally taxed as "qualified dividend income" (QDI) at the lower long-term capital gains rates, provided you've held the ETF for more than 60 days during the 121-day period around the ex-dividend date. As mentioned earlier, remember to use the foreign tax credit information provided on Form 1099-DIV to reduce your tax liability.
The search for the best international ETF with a low expense ratio has a clear answer. Vanguard's VXUS and iShares' IXUS stand in a league of their own for cost, breadth, and simplicity. The 0.01% difference between them is irrelevant. The critical move is to pick one, integrate it into your asset allocation, and let the power of low-cost, global diversification work for you over the coming decades. Stop searching for perfection and start investing with what's proven and efficient.
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