Cheapest World-Equity Accumulating Irish-Domiciled ETFs — justETF Top 3 (fresh fetch)

Pipeline stage: Maya (Content Writer) — longform draft Source artifact: Alex research, fetched 2026-06-30T12:21:07Z New / refresh: Fresh long-form pass. Distinct from the 2026-06-30T10:48 / 2026-06-30T08:56 drafts (preserved on disk per side-by-side policy). Refresh incorporates the newest AUM figures from the screen and surfaces the index-coverage caveat Alex flagged.

1. Working title options

• 0.05% vs 0.05% vs 0.06%: Three Cheapest Accumulating World-Equity ETFs on This justETF Screen
• The 3 Lowest-Fee Irish Accumulating World ETFs Right Now — And Why the Gap That Actually Matters Isn't the Fee
• One Basis Point Apart on Cost, Worlds Apart on Scale: The Cheapest World-Equity ETFs on justETF

2. Suggested dek

The first three results of the screen cost 0.05%, 0.05%, and 0.06% — nearly identical on paper. The real story lives below the headline TER: an €9.4bn flagship, a €2.6bn challenger tracking a slightly broader index, and a €160m newcomer.

3. Long-form draft

Cost is the most common first filter on a world-equity ETF search, and it isn't a bad one. Over a fifteen-year holding period, even a few basis points compound into real money, and the cheapest tier on screen now sits at a level that would have looked aggressive five years ago. But a one-line summary that says "they're all 0.05%" hides the part that actually matters when you try to pick between them.

The justETF screener query this piece is built on is unusually disciplined. It is hard-coded for investors with a specific wrapper in mind: Irish-domiciled funds (because of the US-estate-tax issue and the Ireland-US tax treaty), accumulating share class (because dividends get reinvested without an annual distribution tax drag), fund size above €100m (because launch-stage vehicles can close), and physical replication only (because synthetic ETFs introduce a securities-lending counterparty). The screen sorts the result ascending by Total Expense Ratio. With that filter combination, the table collapses to roughly two dozen funds — and only three of them are at or below 0.06% per year.

Here is what those three look like in the latest capture.

3.1 Amundi Prime Global UCITS ETF Acc — 0.05% TER

Amundi's Irish accumulating world-equity ETF opens the cheapest tier at 0.05% per year and is the largest of the two funds tied at that fee level within the screen, with €2,583m of fund assets. Compared with the third-place fund below, that scale bracket puts it in the same conversation as a flagship, not a launch.

Where Amundi diverges from the other two cheapest entries is in what it actually tracks. The index is Solactive GBS Global Markets Large & Mid Cap, which is broadly analogous to MSCI ACWI in coverage — it includes emerging markets and roughly 1,500+ constituents across developed and emerging economies. The 1-year return column on the screen shows 24.06%, making Amundi the highest visible 1-year performer among the funds in this trio where the figure is populated.

The combination of rock-bottom fee, meaningful scale, and broader-than-MSCI-World coverage makes Amundi the most differentiated of the three on fundamentals, not just on price.

3.2 BNP Paribas Easy MSCI World UCITS ETF EUR Acc — 0.05% TER

BNP's entry ties Amundi on the headline fee at 0.05% per year and tracks MSCI World, the most-cited developed-markets benchmark. Fund size in the latest capture sits at €160m, which is well above the screen's €100m threshold but still orders of magnitude below the other two entries.

Replication is optimized sampling rather than full replication, which is a legitimate choice for a smaller fund that wants to keep trading costs low but is structurally different from the full-replication approach used by Amundi and UBS. The 1-year return is not populated on the captured row of the screener — likely because the share class is too new for a 12-month history — so any performance comparison should be confined to Amundi and UBS for now.

For an investor who specifically wants MSCI World exposure at the absolute lowest fee and is comfortable with a smaller vehicle, BNP belongs on the shortlist. But "smallest" is a real distinction here, not a technicality.

3.3 UBS Core MSCI World UCITS ETF USD acc — 0.06% TER

UBS lands one basis point above the cheapest pair at 0.06% per year and runs at a scale the other two do not approach: €9,602m of fund assets on the latest snapshot. For a reader who cares about closure risk, secondary-market depth, and the volume of investor literature written about the product, that scale is its own form of value.

UBS uses full replication on MSCI World, the most-recognized developed-markets benchmark, and shows a 1-year return of 23.87% on the screen — within roughly 20 basis points of Amundi, which is the kind of gap that disappears in tracking-error noise and is more a function of index choice than of execution.

This is the safest default in the trio: one basis point more expensive than the absolute cheapest tier, but with a fund base more than three and a half times larger than the next-cheapest entry.

4. The comparison that actually matters

A fee-only summary flattens these three into noise. The structural differences are much sharper, and they are the ones that matter for a real holding decision.

4.1 Index coverage is not identical

Two of the three entries track MSCI World, which is the developed-markets benchmark — large- and mid-cap stocks across roughly 23 countries, no emerging markets. Amundi's fund tracks Solactive GBS Global Markets Large & Mid Cap, which has the same flavor as MSCI ACWI: developed plus emerging markets, ~1,500+ constituents, broader country list. Whether that distinction matters depends entirely on whether the investor wants EM exposure. It is not a wash, and it is the single most important caveat to reading the screen as "cheapest three."

4.2 Scale separates them far more than fees do

The fee spread across the three is 1 basis point. The AUM spread is a factor of ~60x between the smallest and largest entry.

4.3 Replication: two paths to the same index

Full replication (Amundi, UBS) buys each constituent outright. Optimized sampling (BNP) holds the larger, more liquid names and samples the rest, trading a small tracking-error tolerance for tighter spreads and lower trading overhead. For MSCI World specifically, optimized sampling is structurally common — both iShares and Invesco have sampling-based World products that have run billions in assets for years. That doesn't mean BNP's entry is structurally risky; it means it is structurally similar to the dominant sampling-based World ETF products on the market.

5. Simple charts

Source data: Alex research artifact, snapshot 2026-06-30T12:21:07Z.

5.1 TER (% per year)

Amundi Prime Global        0.05% | █████
BNP Paribas Easy MSCI Wld  0.05% | █████
UBS Core MSCI World        0.06% | ██████

The fee tier is essentially a single bar.

5.2 Fund size (€ millions)

BNP Paribas Easy MSCI Wld       160 | █
Amundi Prime Global           2,583 | █████████████
UBS Core MSCI World           9,602 | ██████████████████████████████████████████████

This is the chart that actually distinguishes the three. The fee chart is a single bar; this one is two-and-a-half orders of magnitude.

5.3 Visible 1-year return on the screen

Amundi Prime Global        24.06% | ████████████████████████
UBS Core MSCI World        23.87% | ███████████████████████
BNP Paribas Easy MSCI Wld     n/a | not visible on screen — recent share class

5.4 Index coverage comparison

                DM      EM      Const. (approx.)
MSCI World      yes     no       ~1,400
Solactive GBS   yes     yes      ~1,500+

6. Suggested conclusion

The cheapest accumulating Irish-domiciled world-equity ETFs on this justETF screen are clustered so tightly on cost that the fee column almost stops being useful. Two are tied at 0.05% per year, and the third is one basis point higher. Anyone who reads only the first column will walk away thinking the products are interchangeable, and that would be a mistake.

What separates the three is everything below the TER row. The Amundi fund is the broadest of the three in index coverage and the larger of the two cheapest entries on AUM. The UBS fund is one basis point more expensive but offers an order of magnitude more scale than either of its peers. The BNP fund matches the cheapest fee in the screen and tracks the most-cited index, but is the smallest of the three by a wide margin and uses sampling rather than full replication.

For an investor choosing between these three with a multi-decade holding horizon, the simplest framing is this: cost gets them all into the same conversation. Scale, index coverage, and replication method are what actually pick the winner.

7. Editor's note / compliance-safe framing

This piece is built on a specific justETF screener view at a single moment in time and on the linked fund-profile pages. It should be framed as a comparison of screen-level characteristics at the snapshot date, not as an investment recommendation or a complete due-diligence assessment. Fund size and TER figures move daily. The 1-year return is shown as visible or not visible on the captured screen row; readers who re-run the screen after publication will likely see different headline numbers.