VXUS vs IXUS: International ETF Face-Off
Two near-identical total-international funds: thousands of stocks outside the US, developed and emerging, for a handful of basis points. The tie-breakers are small but worth knowing.
Don't have time? Here's what you need to know:
- 1VXUS and IXUS both deliver total international stocks ex-US — thousands of names, developed and emerging.
- 2VXUS uses a FTSE index, IXUS an MSCI index; the main visible difference is South Korea's classification.
- 3Costs are nearly identical (~0.05-0.08%), so match your existing fund family rather than chasing a basis point.
- 4Held in a taxable account, both can generate a foreign tax credit that's lost inside an IRA.
Two Routes to 'Everything Outside the US'
VXUS (Vanguard Total International Stock) and IXUS (iShares Core MSCI Total International Stock) solve the same problem: they hand you the entire world of stocks outside the United States in one ticker. Both span developed markets like Japan, the UK and Europe and emerging markets like China, India and Brazil, and both hold thousands of companies, so single-country or single-stock risk is minimal.
The difference is the index. VXUS follows an FTSE all-world ex-US benchmark, while IXUS follows an MSCI ACWI ex-US benchmark. FTSE and MSCI classify a few countries differently — most notably South Korea, which FTSE treats as developed and MSCI treats as emerging — and they include slightly different small-cap depth. In practice these are nuances; the funds move almost in lockstep.
Cost, Breadth and the Index Nuance
Both funds are cheap and broadly similar in breadth. VXUS typically carries an expense ratio around 0.08% and holds the larger raw number of stocks; IXUS runs slightly cheaper, around 0.05-0.07%, with a still-vast portfolio. On cost the gap is a basis point or two — real but immaterial for almost everyone.
The FTSE-versus-MSCI split is the only structural distinction worth noting. Because FTSE counts South Korea as developed and MSCI counts it as emerging, the two funds bucket that exposure differently, and their emerging-market weights differ marginally. Neither approach is 'right' — they are simply two reasonable maps of the same territory.
| VXUS | IXUS | |
|---|---|---|
| Issuer | Vanguard | iShares (BlackRock) |
| Index family | FTSE Global All Cap ex US | MSCI ACWI ex USA IMI |
| Expense ratio | ~0.08% | ~0.05-0.07% |
| Coverage | Developed + emerging, all-cap | Developed + emerging, all-cap |
| South Korea | Developed (FTSE) | Emerging (MSCI) |
| Holdings | Thousands (larger count) | Thousands |
Tip: Pick one and stay consistent. Holding both VXUS and IXUS adds complexity without diversification, since they cover the same markets.
Performance, Yield and the Foreign Tax Credit
Because they track nearly the same universe, VXUS and IXUS post nearly identical returns year after year; any divergence comes from tiny index and weighting differences, not skill. Both also pay a respectable dividend — international stocks have historically yielded a bit more than the S&P 500 — and both pass through foreign taxes that can generate a foreign tax credit when held in a taxable account.
That foreign tax credit is a genuine reason to keep international funds like these in a taxable brokerage account rather than an IRA: in a taxable account you can reclaim some of the foreign withholding tax on your U.S. return, whereas in a tax-sheltered account that credit is simply lost. Both funds qualify, so this is a point in favor of international diversification generally, not one fund over the other.
How to Break the Tie
If you already hold other Vanguard funds — say VTI for U.S. stocks — VXUS pairs naturally and uses the same FTSE methodology Vanguard applies across its lineup, which keeps your developed/emerging classifications consistent. If your portfolio is built around iShares or you want the marginally lower fee, IXUS is the cleaner fit.
For most investors the honest answer is that it does not matter much: pick the one that matches your existing fund family or your broker's commission-free list, and devote your energy to the bigger question of how much international exposure to hold at all. A common target is roughly 20-40% of equities in international stocks, and either fund fills that slot equally well.
Important: Don't overthink VXUS vs IXUS. The decision that actually moves your returns is what percentage of your stocks you put overseas, not which of these two tickers delivers it.
Frequently Asked Questions
Is VXUS or IXUS better?
They are close to interchangeable. Both hold thousands of non-US stocks across developed and emerging markets for a handful of basis points. IXUS is usually a touch cheaper; VXUS pairs cleanly with other Vanguard funds. Choose based on your existing fund family and commission-free list rather than expecting a performance difference.
What's the actual difference between VXUS and IXUS?
Mainly the index provider. VXUS follows a FTSE benchmark and IXUS follows an MSCI benchmark. The most visible effect is South Korea, which FTSE classifies as developed and MSCI as emerging, leading to slightly different emerging-market weights. Expense ratios differ by a basis point or two. Returns are nearly identical.
Should I hold international ETFs in a taxable account or an IRA?
A taxable account is often preferable for international funds like VXUS or IXUS, because the foreign taxes they pass through can generate a foreign tax credit on your U.S. return. In a tax-sheltered IRA or 401(k), that credit is lost. Your overall asset-location plan should still come first, but the credit tilts these funds toward taxable accounts.
How much international exposure should I have?
There's no single right answer, but a common range is roughly 20-40% of your stock allocation in international shares, reflecting that non-US companies make up a large share of the global market. Either VXUS or IXUS can fill that allocation; the percentage you choose matters far more than which ticker you use.
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Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.