Index Funds Available in Japan
Index funds available in Japan give residents a yen-denominated route into broad-market investing without opening an overseas account.12 The choice that matters is not past performance but structure: which index a fund tracks, what it costs each year, and whether the new NISA will shelter it.34
Procedures, fees, and requirements can change. Confirm current details at the Mitsubishi UFJ Asset Management fund pages and the Financial Services Agency NISA site. This article is general information, not investment advice; for your specific case, consult a licensed financial adviser for product selection, or a tax accountant (zeirishi) for NISA or cross-border tax treatment.
Overview
Residents buy index exposure in Japan mainly as domestic mutual funds (投資信託) through brokers such as SBI Securities, Rakuten Securities, or Monex.12 These are yen-denominated, no-load products: you pay in yen, hold in a domestic securities account, and the annual trust fee comes out of fund assets daily.5
The ｅＭＡＸＩＳ Ｓｌｉｍ (eMAXIS Slim, "Mitsubishi UFJ Asset Management no-load index fund series") is the documented default low-cost family used as the reference point throughout this article.1 Comparable SBI families track the same headline indices at similarly low fees.6 A third route, US-listed ETFs bought through a domestic broker, adds dollar settlement and a currency-conversion step.7
This article explains mechanics and cost comparison only. It makes no buy or sell recommendations.
The eMAXIS Slim Family as the Default Reference
The Slim family is a no-load index series: no purchase fee and no trust-property retention on redemption.58 Each fund tracks a named index on a dividend-included, yen-converted basis, generally without currency hedging.12 That combination is why resident guides treat it as the baseline against which other domestic funds are measured.9
Broker search results mix Slim and non-Slim eMAXIS funds with near-identical names. Checking for the Slim label before anything else screens out the higher-fee variant described below.9
S&P 500, All Country, Emerging Markets, and TOPIX
The lineup covers four documented equity exposures: US equity (S&P 500), global equity (All Country), emerging-market equity, and domestic equity (TOPIX).125 The first two carry the most attention from resident investors, so their figures are stated explicitly while the latter two are carried structurally.
The S&P 500 fund (ISIN JP90C000GKC6) tracks the S&P 500 on a dividend-included, yen-converted basis (as of 2026-01-15; confirm current figures with Mitsubishi UFJ Asset Management).110 Its trust fee is set at 0.08140 percent per year tax included or lower, stepping down in tiers as net assets grow (as of 2026-01-15).10 Its reported total expense ratio for the April 2024 to April 2025 report period was 0.10 percent per year, comprising 0.09 percent management and 0.01 percent other expenses (as of 2025-04-25).10
The All Country fund (nickname Orkan, ISIN JP90C000H1T1) tracks the MSCI All Country World Index across developed and emerging markets (as of 2026-01-24; confirm current figures with Mitsubishi UFJ Asset Management).28 Its base trust fee is 0.05775 percent per year tax included, stepping down on large-asset tiers under the January 2026 prospectus (as of 2026-01-24).8 A current delivery prospectus filing exists with effect from July 2026, so readers should check the latest document before acting.11
| Fund | Tracked index | Annual trust fee | As of |
|---|---|---|---|
| eMAXIS Slim S&P 500 | S&P 500, dividend-included yen basis | 0.08140 percent or lower | 2026-01-1510 |
| eMAXIS Slim S&P 500 total expense (report period) | Same index | 0.10 percent | 2025-04-2510 |
| eMAXIS Slim All Country | MSCI All Country World Index, yen basis | 0.05775 percent base | 2026-01-248 |
The table above carries the currency signal for the section: each figure is dated, and the full confirmation clause sits on the first figure. Emerging-market and TOPIX Slim funds belong to the same no-load brand, but this article states no per-fund fee for them because individual prospectus figures were not confirmed in this research pass.5
| Term | Reading | Meaning |
|---|---|---|
| ｅＭＡＸＩＳ Ｓｌｉｍ | eMAXIS Slim | Mitsubishi UFJ Asset Management no-load index fund series1 |
| 信託報酬 | shintaku hoshu | Trust fee, the annual management fee deducted daily from fund assets5 |
| 追加型投信 | tsuika-gata toshin | Additional-type investment trust, open for ongoing purchase and redemption1 |
Comparable Domestic Alternatives
SBI families give residents a second low-cost domestic route tracking the same headline exposures. The existence of a live alternative matters because broker campaigns and point programs sometimes tilt a resident toward one distributor, and the fee comparison stays close either way.6
Where SBI Offerings Differ
The ＳＢＩ・Ｖ・Ｓ＆Ｐ５００ (SBI V S&P 500, "SBI index fund tracking the S&P 500") invests principally in ETFs to track the S&P 500 dividend-included yen basis, unhedged, under a family-fund method with September settlement.6 Its positioning is the same low-cost slot as the Slim S&P 500 fund, though this article states no exact SBI expense figure because the SBI prospectus rate was not confirmed in this research pass.
Two funds with similar names can track different indices or hedge currency differently. Confirm the tracked index and the hedged or unhedged statement on the fund page first, then compare the annual rate.6
The practical difference sits in distribution rather than structure: which broker lists the fund, which point program it plugs into, and which NISA frame it is registered under.64 A fee gap of roughly 50 to 60 basis points against non-Slim eMAXIS equivalents (as of 2026-05-14) shows why the family label deserves more attention than any campaign banner.9
Buying Foreign ETFs Through a Domestic Broker
US-listed ETFs such as Vanguard VOO and iShares IVV are accessible inside a domestic securities account at SBI or Rakuten, settled in dollars.127 The mechanics add two steps a domestic mutual fund does not have: converting yen to dollars and trading during US market hours with dollar settlement. Dividends land in dollars without automatic conversion back to yen, so the return leg is a manual foreign-exchange transaction.7
The flow below sketches the purchase path a yen-funded resident follows.
A US stock and ETF trade at SBI Securities costs 0.495 percent of trade value with no minimum and a 22 dollar maximum per trade (as of 2026-08-23; confirm current figures with SBI Securities).12 Domestic cash-equity brokerage can be zero under Zero Revolution conditions, meaning an internet course plus electronic document delivery, though product and market charges remain (as of 2026-08-23).12 VOO carries a 0.03 percent ETF expense ratio (as of 2026-04-28), and IVV carries a 0.03 percent ratio on its current prospectus (as of 2026-09-04).1314
The Offshore FX and Settlement Procedure
The 為替手数料 (kawase tesuryo, "foreign exchange conversion fee or spread on yen-dollar conversion") applies on each yen-dollar leg, in both directions when money eventually returns to yen.7 Exact spreads were not confirmed in this research pass, so treat the round trip as two cost events rather than one. Commission and spread figures sit with the broker, not the ETF issuer, which means the broker fee page is the document to check before estimating friction.12
A purchase converts yen to dollars and a future withdrawal converts back. Estimating only the outbound leg understates the round-trip friction on funds destined for yen spending.7
Realistic Cost Comparison
Three routes cover the realistic choice set: a Slim domestic index fund, a domestic active fund at illustrative pricing, and VOO bought directly through a domestic broker. Ongoing annual cost and one-off friction are separated because they behave differently: the annual rate compounds every year while commission and spreads hit once per transaction.101312
The Slim S&P 500 route costs approximately 0.09 to 0.10 percent per year in management terms with no purchase fee and yen settlement (as of 2025-04-25; confirm current figures with Mitsubishi UFJ Asset Management).10 The illustrative domestic active S&P 500-linked fund costs 1 percent or more per year, roughly ten times the Slim management rate. Industry context supports the direction of that gap: S&P 500 index funds average 0.41 percent against 0.03 percent for the Vanguard ETF (as of 2026-06-30).15
| Route | Ongoing cost | One-off friction | As of |
|---|---|---|---|
| eMAXIS Slim S&P 500 | About 0.09 to 0.10 percent per year | None, no-load yen purchase | 2025-04-2510 |
| Domestic active S&P 500 fund, illustrative | 1 percent or more per year | None stated | Brief figure, unconfirmed |
| VOO via domestic broker | 0.03 percent ETF expense per year | 0.495 percent commission capped at 22 dollars plus FX spread per leg | 2026-04-28 and 2026-08-231312 |
Small regular monthly contributions avoid per-trade dollar commissions and FX spreads on every purchase through the domestic mutual fund route.127 Large lump sums narrow that gap because a single capped commission spreads over a larger amount. No performance claim follows from this arithmetic; lower cost does not predict higher return.
eMAXIS Slim S&P 500 vs Active Domestic Fund vs Direct VOO
Read the table above as fee mechanics, not as a recommendation among the three rows. The active-fund row is a labeled illustration from the assignment brief rather than a named fund prospectus, so its figure should be treated as directional until checked against a specific fund document. The VOO row splits cleanly into issuer cost (the 0.03 percent expense ratio) and broker cost (commission plus spreads), which is why its total depends on trade size and frequency.1312
New NISA Eligibility Constraint
The new NISA framework, in place from January 2024 as a permanent system with an indefinite tax-free holding period, shapes fund choice before cost comparison begins.3 The つみたて投資枠 (tsumitate toshi-waku, "NISA installment investment frame") accepts only funds on the Financial Services Agency eligible-products list, which the agency updates periodically (as of 2026-08-31; confirm current details with the Financial Services Agency).4 A fund outside that list cannot sit in the tsumitate bracket regardless of how low its fee is.
The 成長投資枠 (seicho toshi-waku, "NISA growth investment frame") covers a broader product universe including listed ETFs, with its detailed investment-trust list held by the asset-management industry association.4 Annual tsumitate and growth quotas plus the lifetime cap form the hard budget for fund choice: 1.2 million yen per year of tsumitate plus 2.4 million yen per year of growth, up to 3.6 million yen combined, within an 18 million yen lifetime cap of which 12 million yen at most sits in the growth frame (as of 2026-09-07; confirm current figures with the Financial Services Agency).16 The Slim S&P 500 and All Country funds are standard tsumitate-frame holdings across NISA guides, but eligibility must be rechecked against the current list rather than assumed permanent (as of 2026-08-31).49
What the Eligible Fund List Controls
The list functions as a hard filter, not guidance: inclusion permits tsumitate purchase, exclusion blocks it.4 Agency revisions move the boundary, with 2026 changes adding two new eligible equity indices and opening bond-focused and balanced trusts to eligibility for lower-risk-tolerance investors (as of 2026-04-13).17 Residents choosing between the Slim family and alternatives should therefore check the list entry for the exact fund and share class, not just the family name.
NISA eligibility attaches to the specific fund, not the brand. Confirm the exact fund name against the current Financial Services Agency list before assuming a tsumitate purchase will qualify.4
Good to know
Do not confuse eMAXIS with eMAXIS Slim
The two lines track the same indices but charge very different fees. Non-Slim eMAXIS equivalents cost roughly 50 to 60 basis points more per year (as of 2026-05-14), a gap that compounds far beyond the naive fee-times-years estimate over multi-decade holding periods.9 Broker search boxes surface both lines together, so the Slim label check from the earlier section is the cheapest habit in this article.
Currency exposure stays unhedged on the headline funds
A yen-denominated purchase does not create yen-denominated exposure. The headline Slim equity funds and the SBI V S&P 500 fund are generally unhedged, so returns move with the dollar and other constituent currencies alongside the underlying equities.86 Residents who will spend the proceeds in yen carry this exchange-rate movement whether they buy the domestic fund or the US-listed ETF directly.
US persons face a separate tax filter before costs matter
Readers who are US taxpayers should resolve the US tax classification of any Japanese pooled fund with a specialist before comparing costs. US tax rules can treat Japanese mutual funds as Passive Foreign Investment Companies, a question this article does not analyze. This article explains product mechanics only and does not analyze any individual's tax position.
See also
- Repatriating Pension and Investment Balances at Departure
- Sony Bank's Multi-Currency Account
- iDeCo: The Private-Pension Path
- J-REITs in Japan: Listed Property Income Explained