Amundi Prime ETFs and the great TER price war of 2024-2026

By Kestutis Balciunas·Reviewed August 24, 2026

The story of Amundi Prime ETFs is really the story of how core investing in Europe became almost free. When Amundi launched an all-country world fund at roughly 0.07% in June 2024, it did more than undercut Vanguard. It fired the loudest shot in a fee war that has been running across the UCITS market ever since. SPDR now offers an S&P 500 fund at around 0.03%. Invesco sells the FTSE All-World for 0.15%. Several MSCI World funds sit at 0.05% or below.

I have watched this price war unfold trade by trade since 2023, and I hold funds on both sides of it. In this analysis I want to explain what the Prime range actually is, how the Solactive index licensing trick makes these fees possible, why issuers are willing to race towards zero, and — most importantly — when you should act on it. Spoiler: the answer is rarely “sell everything and switch”. All fee figures here are illustrative and move over time, so always check the issuer factsheet before acting.

What Amundi Prime ETFs actually are

The Prime range is the French giant’s ultra-low-cost core lineup. The idea is simple: take the handful of exposures that form the backbone of almost every portfolio — global equities, US equities, Europe, government bonds — and offer them at the lowest possible headline fee. The Prime range launched around 2020 with developed-market building blocks priced near 0.05%, at a time when established rivals charged three to four times that.

The breakout product arrived in June 2024. The Amundi Prime All-Country World UCITS ETF — ticker WEBN for the accumulating class — packaged roughly 3,400 developed- and emerging-market stocks into one Irish-domiciled fund for about 0.07%. For context, Vanguard’s VWCE charged around 0.22% at the time for near-identical exposure — pressure that eventually pushed Vanguard’s own cuts to 0.14% by mid-2026. WEBN gathered billions in assets within two years, and I cover it fund-by-fund in my WEBN factsheet and the wider Amundi Prime All-Country World deep dive.

The Prime Global and MSCI World-style developed-market lines sit even lower, at roughly 0.05%. These are deliberately plain products: physical replication, large and mid caps, no frills. That plainness is the point. Amundi is not trying to win on cleverness. It is trying to win on price, scale and distribution.

Why Amundi Prime ETFs are so cheap: the Solactive trick

Here is the part most investors miss. The single biggest cost lever behind the Prime range is not fund management at all. It is index licensing.

Household-name benchmarks are expensive to rent. MSCI and FTSE Russell charge fund providers meaningful licensing fees, often linked to assets under management. When your headline fee is 0.05%, an index licence can swallow a painful share of your revenue. So Amundi sidestepped the big brands entirely. The Prime range tracks Solactive indices — rules-based benchmarks from a German index firm that licenses its products far more cheaply.

Does that make the funds worse? In my view, no. The Solactive GBS series follows the same market-cap logic as FTSE and MSCI equivalents. Country weights, sector weights and top holdings look almost interchangeable at a glance. The differences are real but small: inclusion thresholds, rebalancing schedules and the classification of a few borderline markets. Over short periods those quirks produce return gaps of a few basis points in either direction. They are differences, not defects.

The honest caveat is comparability. A Solactive fund and an MSCI fund are not tracking the same yardstick, so a raw performance comparison always carries a little noise. That matters when you judge how well a cheap fund actually delivers — which is a tracking-difference question, and I explain that machinery in ETF tracking difference explained.

The TER price war: a 2023–2026 timeline

Amundi did not start the fee war alone, and it certainly has not fought it alone. The table below sketches the major moves. Every figure is approximate — issuers adjust fees regularly, so verify current numbers on the factsheet before you rely on them.

I tracked the 2025 wave of reductions in detail in ETF TER fee cuts in 2025, and the current cheapest options are ranked in my guides to the cheapest all-world ETF and the cheapest S&P 500 UCITS ETF.

Why issuers race towards zero

A fund charging 0.03% sounds like charity. It is not. Four forces explain the race.

Scale economics. Running an index fund has heavy fixed costs and tiny marginal ones. Managing €20 billion costs little more than managing €2 billion. Once a fund is large, even three basis points is real revenue — 0.03% on €10 billion is €3 million a year for a largely automated product.

Distribution deals. The fastest-growing channel in European investing is the neobroker savings plan. Issuers strike deals with platforms such as Trade Republic and Scalable Capital to make their funds the default, fee-free savings-plan option. A rock-bottom TER is the ticket into those partnerships, and monthly savings-plan money is famously sticky.

Loss-leader cores. Nobody expects to get rich on a 0.05% world fund. The cheap core gets you into the client’s portfolio; the issuer then earns properly on sector funds, thematic products, bond ladders and active ETFs sitting beside it. Supermarkets price milk the same way.

Ancillary revenue. Securities lending and efficient internal trading can recover a few basis points on top of the headline fee. For a physically replicated fund with lending in place, the true economics are better than the TER suggests.

Understand these incentives and the price war stops looking mysterious. It also stops looking temporary. Every force above strengthens with scale, so I expect core exposure to stay this cheap — or get cheaper.

Related reading: best t rowe price etf.

Winners and catches for investors

Let me be clear: this war is being fought for your benefit, and you are winning it. A European investor in 2016 paid 0.25–0.45% for a decent global core. Today the same exposure costs 0.05–0.07%. On a €100,000 portfolio compounding over 25 years, that difference quietly adds up to tens of thousands of euros. This is one of the few genuinely free lunches in investing.

But there are catches, and they deserve honest treatment.

• Index differences. The cheapest funds usually track Solactive rather than FTSE or MSCI. Behaviour is near-identical, but not identical — you are accepting a less famous yardstick as part of the price.
• Young funds. Many price-war products launched after 2023. A fund with two years of history has two years of tracking evidence, full stop. Encouraging early data is not a decade-long record.
• TER is not total cost. Tracking difference — the realised gap between fund and index — is the true cost of ownership. A 0.12% fund that tracks superbly can beat a 0.05% fund that tracks loosely. Spreads and your broker’s fees sit on top.
• Fee cuts are not contractual. A TER can rise as well as fall. It rarely happens to flagship funds, because the competitive damage would be severe, but the small print allows it.

Should you switch to Amundi Prime ETFs for a lower TER?

This is the question my inbox fills with every time a new cut is announced, so here is my framework. It has two very different answers.

For new money: yes, cost matters enormously. If you are starting fresh or directing monthly contributions, there is no penalty for choosing the cheapest well-built fund. Pointing a new savings plan at a 0.05–0.07% core instead of a 0.20%+ one is a decision that compounds in your favour for decades.

For existing holdings: usually no. Selling a fund you already own to chase a lower TER triggers real costs. In most European countries, selling realises capital gains and creates a tax bill today, in exchange for saving a few basis points per year. You also pay the bid-ask spread twice, plus any dealing fees, and you sit out of the market during the switch. If you hold VWCE with years of embedded gains, selling it to save 0.15 points can take a decade to break even — and switching to save 0.02 points is almost never worth it. Run your own numbers with your own tax rate before touching anything.

The elegant middle path: keep the old fund, stop adding to it, and direct all new contributions to the cheaper one. No tax event, no spread costs, and your blended fee falls steadily with every monthly purchase.

My take

After eleven years of investing through European wrappers, I regard the fee war as the best thing to happen to retail investors here since UCITS itself. The core of my own portfolio costs a fraction of what it did in 2016, and Amundi Prime ETFs deserve real credit for forcing the pace — the Solactive licensing move was a genuine structural innovation, not a gimmick.

At the same time, I refuse to be a fee tourist. Below roughly 0.10%, the TER stops being the deciding factor. Tracking quality, fund size, spreads at your broker and your own tax position all matter more than a two-basis-point difference. My rule: choose the cheapest fund whose structure and tracking record you trust, then leave it alone. The investor who switches funds every time someone cuts a fee will lose more to taxes and spreads than the cuts ever save.

Common mistakes

• Churning funds to chase every cut. Selling realises taxes and spreads; saving 0.02% per year cannot outrun a capital-gains bill today.
• Treating TER as total cost. Tracking difference, spreads and broker fees decide what you actually pay. Judge funds on realised tracking, not the sticker.
• Assuming Solactive means second-rate. It is a legitimate, rules-based index family. Different from MSCI and FTSE in small ways, not deficient.
• Ignoring fund age. A brilliant fee on a six-month-old fund still comes with a six-month track record. Price that in consciously.
• Forgetting fees can rise. TERs are set by the issuer, not carved in stone. Flagship funds rarely raise them, but check your factsheet occasionally.

Key takeaways

• Amundi Prime ETFs are deliberately plain, ultra-cheap core funds — WEBN’s all-country line at ~0.07% and developed-world lines near 0.05% — built on cheaper Solactive index licences.
• The 2023–2026 price war has pushed core UCITS fees to historic lows: S&P 500 exposure near 0.03%, world exposure at 0.05–0.07% — always confirm live figures on the issuer factsheet.
• Issuers cut fees for rational reasons: scale economics, neobroker savings-plan distribution, loss-leader cores and securities-lending revenue. The trend looks durable.
• The real cost of an ETF is tracking difference plus trading costs, not the TER alone — and many of the cheapest funds are still young.
• Direct new money to the cheapest fund you trust, but think hard before selling existing holdings: taxes and spreads usually outweigh a small fee saving.

FAQ

Q: What are Amundi Prime ETFs?
A: Amundi’s ultra-low-cost core range: plain, physically replicated funds tracking Solactive indices, covering global, US and European equities plus bonds, with headline fees from roughly 0.05%.

Q: Why does the Prime range use Solactive indices instead of MSCI or FTSE?
A: Licensing cost. Solactive charges fund providers far less than the big index brands, and Amundi passes the saving on through the TER. The exposure is nearly identical in practice.

Q: What is the cheapest all-world ETF right now?
A: WEBN, at roughly 0.07%, has led since June 2024, but the field moves quickly — check current TERs on justETF or the issuer factsheet before buying.

Q: Is a 0.03% ETF too cheap to be sustainable?
A: Not necessarily. At scale, even three basis points covers the costs of an automated index fund, and securities lending adds revenue on top. The bigger question is whether the fund tracks well.

Q: Should I sell VWCE and buy WEBN?
A: Usually not, if you have meaningful unrealised gains — the tax bill from selling typically outweighs years of fee savings. Directing new contributions to the cheaper fund is the tax-free alternative.

Q: Does a lower TER guarantee better returns?
A: No. Returns depend on the index tracked and the fund’s tracking difference. A slightly dearer fund that tracks tightly can beat a cheaper one that tracks loosely.

Q: Are young price-war funds riskier?
A: Your money is protected by the same UCITS safeguards as in any established fund. The risk is informational: less tracking history and, for very small funds, a small chance of closure and forced sale.

Q: Will ETF fees keep falling?
A: The forces driving the war — scale, savings-plan distribution, loss-leader economics — all persist, so core fees should stay very low. But cuts are commercial decisions, not promises.

Q: Do fee cuts apply to existing holders?
A: Yes. A TER reduction applies to the whole fund, so existing investors benefit automatically without doing anything.

Cited sources: justETF and Morningstar. Check current TER, AUM and holdings on the issuer factsheet — figures change.

Kestutis Balciunas
European UCITS/ETF investor with 11+ years building a global dividend and index portfolio, and founder of Financial Expert Class. I write every guide here from first-hand experience investing across EU brokers and tax regimes — not theory. More about me →