CSPX vs SPY — S&P 500 ETF for Europeans

If you're an investor based in the EU — including Poland — and you want exposure to the S&P 500, you've probably seen the name SPY everywhere. It's the most famous ETF in the world. But for Europeans, CSPX (iShares Core S&P 500 UCITS ETF) is almost always the better choice. This comparison explains exactly why.

Quick Answer

For investors based in the EU, including Poland, CSPX (iShares Core S&P 500 UCITS ETF) is almost always the better choice over SPY for S&P 500 exposure. CSPX is UCITS-regulated, accumulating (dividends reinvested automatically), and Ireland-domiciled, so US dividends are withheld at 15% rather than the 30% default a Polish resident faces with SPY. Since MiFID II in 2018, most EU brokers cannot even offer SPY to retail clients because US ETFs lack KID/PRIIPs documents.

• CSPX: UCITS, accumulating, ~0.30%/year tax drag, available on EU brokers
• SPY: US-domiciled, distributing, higher tax drag (0.45–0.60%/year), generally unavailable to EU retail

Who this comparison helps

• Europeans and Polish investors building passive portfolios
• FIRE savers accumulating for 20–30 years
• Expats switching from US brokers to European ones
• Anyone wondering why MiFID-II blocks SPY on EU brokers

Quick verdict

• Casual EU investor: CSPX — available, tax-efficient, accumulating
• Power user / trader: SPY only if you trade options on US brokers
• Expat in Europe: CSPX — fits local tax frameworks
• FIRE / passive investor: CSPX is the default — reinvests dividends automatically

CSPX — the European S&P 500 standard

CSPX is the iShares Core S&P 500 UCITS ETF, domiciled in Ireland, listed on LSE, Xetra, Borsa Italiana and others. Launched in 2010 by BlackRock. Total assets: ~100 bn USD (one of the largest UCITS ETFs). UCITS-regulated, meaning it meets European retail investor protection standards. Accumulating share class (dividends reinvested automatically). Ticker: CSPX (USD), CSP1 (GBP), also available as VUAA from Vanguard.

SPY — the American S&P 500 dinosaur

SPY (SPDR S&P 500 ETF Trust) is the oldest US-listed ETF, launched in 1993 by State Street. Total assets exceeding 500 bn USD — the biggest ETF in the world. US-registered under the Investment Company Act 1940, structured as a unit investment trust. Distributing share class (pays quarterly dividends in cash). Ticker: SPY (NYSE Arca).

Detailed comparison

Domicile and regulation

• CSPX: Ireland-domiciled, UCITS (EU investor protection)
• SPY: US-domiciled, SEC-regulated, not UCITS
• Since 2018, MiFID II requires EU brokers to provide KID/PRIIPs documents — US ETFs like SPY don't comply, so most EU brokers cannot offer them to retail clients

Dividend tax (withholding)

• CSPX (Irish): dividends from US stocks taxed at 15% under US-Ireland tax treaty, then reinvested inside the fund
• SPY (US): for a Polish resident, dividends are withheld at 30% by default (or 15% if W-8BEN is filed). You then still owe Polish 19% Belka tax on the net received
• Effective drag: CSPX ~0.30%/year, SPY 0.45–0.60%/year depending on tax situation

Total Expense Ratio (TER)

• CSPX: 0.07% per year
• SPY: 0.0945% per year
• Almost identical — not a deciding factor

Accumulating vs distributing

• CSPX: accumulating — reinvests dividends automatically, no manual work
• SPY: distributing — pays cash quarterly, you must reinvest manually (generates more tax events)

Liquidity and spreads

• SPY: tightest spreads in existence (~0.01%), 24/7 institutional interest
• CSPX: very liquid for a UCITS ETF (~0.03–0.05% spread on LSE/Xetra) — fine for retail investors

Availability for EU retail

• CSPX: available on DEGIRO, XTB, Trading 212, Interactive Brokers Europe, Scalable Capital, Trade Republic, etc.
• SPY: blocked for EU retail on most brokers due to MiFID II PRIIPs — available only via IBKR Pro (with professional classification) or offshore brokers

Currency

• Both priced in USD, but CSPX is also listed in GBP and EUR versions on European exchanges for easier FX management

Inheritance considerations

• CSPX: Irish domicile, no US estate tax exposure
• SPY: US assets — heirs potentially subject to US estate tax over ~60 000 USD threshold (for non-resident aliens)

Use case personas

Persona A — Anna, 30, new EU investor, €300/month. CSPX on Trading 212 or XTB: one click, dividends auto-reinvested, no forms to fill. Total drag <0.35%.

Persona B — Mark, 42, active trader in US markets. SPY if he uses IBKR Pro (classified professional). Otherwise CSPX/VUAA for the core position.

Persona C — Kasia, 38, FIRE saver, €2 000/month for 25 years. CSPX wins easily. Over 25 years, the ~0.20% annual dividend drag advantage compounds into tens of thousands of EUR.

10-year cost example — €50 000 invested

Assuming 8% annual return:

• CSPX: ending value ~€107 900 (TER 0.07% + 15% dividend WHT = ~0.35% total drag)
• SPY for Polish resident: ending value ~€103 600 (TER 0.09% + 30% dividend WHT and additional Belka tax = ~0.65% total drag)

Difference: ~€4 300 in 10 years in favour of CSPX — and it grows exponentially over longer horizons.

Common mistakes

• Buying SPY via IBKR "because everyone on Reddit talks about it" — and paying 30% WHT
• Ignoring accumulating vs distributing — paying Belka on cash dividends every year
• Choosing SPY for "tighter spreads" while holding for 20 years (irrelevant)
• Confusing CSPX with VUSA (Vanguard S&P 500, distributing) — pick VUAA or CSPX for accumulating
• Forgetting US estate tax exposure on US-domiciled ETFs

FAQ

Is CSPX available on XTB?

Yes — CSPX trades on LSE, Xetra and Borsa Italiana, all accessible via XTB.

Why can't I buy SPY on DEGIRO?

MiFID II requires a PRIIPs KID document. SPY is US-registered and doesn't produce one, so EU retail brokers cannot offer it.

Is VUAA the same as CSPX?

Practically yes — VUAA is Vanguard's accumulating S&P 500 UCITS ETF. Both are Irish-domiciled, ~0.07% TER. Performance nearly identical.

Do I pay Polish Belka tax on CSPX?

Only when you sell and realize gains — 19%. No annual dividend tax because there are no distributions.

What about currency hedging?

CSPX has a USD-hedged EUR variant (CSPX EUR Hedged). Most long-term investors skip hedging for equities.

Checklist for choosing between CSPX and SPY

• Am I an EU/UK retail investor? → CSPX
• Do I want accumulating (auto-reinvesting) shares? → CSPX
• Do I need to trade options on the S&P 500? → SPY via IBKR Pro
• Do I already hold US assets and worry about estate tax? → CSPX reduces exposure
• Do I want the lowest possible tracking difference long-term? → CSPX wins after tax

When to switch from SPY to CSPX

• You moved from the US to the EU and became an EU tax resident
• You discovered your broker offered SPY via a professional classification you shouldn't have accepted
• You want to simplify tax filing (no annual dividend taxation to track)

Red flags to watch

• Holding SPY without a filed W-8BEN: 30% dividend WHT instead of 15%
• Confusing VUSA (Vanguard distributing) with VUAA (Vanguard accumulating)
• Ignoring spread width when buying at market open/close on LSE
• Double-counting currency risk (CSPX is USD-denominated even on Xetra/LSE EUR listings)
• Using SPY for a multi-decade hold as a non-US resident

Alternative tickers worth knowing

• VUAA: Vanguard S&P 500 UCITS (accumulating, TER 0.07%)
• VUSA: Vanguard S&P 500 UCITS (distributing, TER 0.07%)
• SXR8: Xetra ticker for CSPX (EUR listing)
• IVV: iShares Core S&P 500 (US-domiciled, distributing) — similar issues as SPY for EU
• VOO: Vanguard S&P 500 (US-domiciled) — same problem as SPY

Tracking difference in practice

CSPX consistently tracks the S&P 500 with -0.05% to +0.10% annual deviation, mostly thanks to securities lending revenue and dividend reinvestment efficiency. SPY has slightly higher tracking difference because it's structured as a unit investment trust (can't reinvest dividends internally — must distribute them in cash).

Why this matters over 30 years

€10 000 invested at 8% annual return over 30 years:

• CSPX (0.35% drag): ends at ~€91 500
• SPY (0.65% drag for PL resident): ends at ~€83 400

Difference: €8 100 on a single €10 000 purchase. Multiply by a full accumulation portfolio and the gap is life-changing.

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