GPW vs Foreign Stock Exchanges – Where Should You Invest?
Comparing the Warsaw Stock Exchange (GPW) with international exchanges like NYSE and NASDAQ. Costs, taxes, and practical advice for Polish investors.
9 min czytaniaThe Big Question
Polish investors today have easy access to both the Warsaw Stock Exchange (GPW) and major international markets. But where should you put your money? Each option has distinct advantages and trade-offs.
GPW – The Home Market
The Warsaw Stock Exchange is Central Europe's largest exchange, with over 400 companies on the main market and hundreds more on NewConnect (the growth market).
Advantages:
- No currency risk – everything trades in PLN
- Simple taxes – 19% flat tax on gains, PIT-8C generated automatically by your broker
- Low commissions – starting from 0.19% per trade
- Familiarity – you know the companies (Orlen, KGHM, Żabka, Dino)
- No dividend double taxation – straightforward 19% withholding
- IKE/IKZE eligibility – tax-advantaged accounts work seamlessly with GPW stocks
Disadvantages:
- Limited sector diversity (heavy on banks, energy, mining)
- Lower liquidity compared to Western exchanges
- Fewer world-class growth companies
- Higher correlation with regional geopolitical risk
Key indices:
- WIG20 – 20 largest companies
- mWIG40 – 40 mid-cap companies
- sWIG80 – 80 small-cap companies
International Exchanges
NYSE & NASDAQ (United States)
Combined market cap exceeding $50 trillion. Home to Apple, Microsoft, Amazon, NVIDIA, Tesla, and thousands more.
London Stock Exchange
Strong in financial services, mining, and energy. Good for dividend investors.
Xetra (Germany)
Europe's largest exchange. Home to SAP, Siemens, and major European ETFs.
Advantages of foreign exchanges:
- Massive selection – thousands of companies across every sector
- Superior liquidity – tight spreads on popular stocks
- Access to global megatrends (AI, biotech, semiconductors, clean energy)
- Wide range of ETFs covering any market or theme
- Better price discovery due to higher trading volumes
Disadvantages:
- Currency risk (USD/PLN can swing 10-15% annually)
- Higher total costs when accounting for currency conversion
- Tax complexity – especially for US dividends (W-8BEN form required)
- Time zone differences – US markets open at 15:30 Polish time
Cost Comparison
Let's compare buying 10,000 PLN worth of stocks:
GPW (e.g., PKO BP via mBank eMakler):
- Commission: 0.29% = 29 PLN
- Currency conversion: 0 PLN
- Total: ~29 PLN
NYSE (e.g., Apple via XTB):
- Commission: 0 PLN (free up to €100K/month)
- Currency spread: ~0.5% = 50 PLN
- Total: ~50 PLN
NYSE (e.g., Apple via mBank eMakler):
- Commission: 0.29% = 29 PLN
- Currency spread: ~0.5-1.0% = 50-100 PLN
- Total: ~79-129 PLN
For frequent traders, these currency costs add up significantly.
Tax Implications
Capital Gains
Regardless of where you trade, Polish tax residents pay 19% capital gains tax on profits. Your broker should provide a PIT-8C (or equivalent report for foreign brokers).
Dividends – The Tricky Part
| Source Country | Tax at Source | Polish Tax | Total | Action Needed |
|---|---|---|---|---|
| Poland | 19% (final) | 0% | 19% | None |
| USA (with W-8BEN) | 15% | 4% top-up | 19% | File W-8BEN, report in PIT-36 |
| USA (without W-8BEN) | 30% | 0% (overpaid) | 30% | Lose 11%! |
| UK | 0% | 19% | 19% | Report in PIT-36 |
| Germany | 26.375% | 0% (overpaid) | 26.375% | Can reclaim excess |
Key takeaway: Always file the W-8BEN form with your broker for US stocks. It takes 5 minutes and saves you 11% on every dividend.
The Best Approach: Combine Both
Most experienced Polish investors use both markets:
Sample allocation:
- 30-40% GPW – blue chips and dividend stocks (PKO, PZU, Orlen)
- 40-50% Global ETFs – VWCE, CSPX, or MSCI World
- 10-20% Polish bonds – EDO, COI for stability
This gives you:
- Exposure to Poland's growing economy
- Access to global tech and innovation leaders
- Currency diversification
- Reduced single-market risk
Which Broker for What?
| Broker | Best For | GPW | Foreign | IKE/IKZE |
|---|---|---|---|---|
| XTB | Foreign stocks, no commission | ✅ | ✅ | ✅ |
| mBank eMakler | GPW convenience | ✅ | ✅ | ✅ |
| Interactive Brokers | Large portfolios, lowest FX rates | ❌ | ✅ | ❌ |
| Bossa (BNP Paribas) | GPW + research tools | ✅ | ✅ | ✅ |
| Revolut | Small amounts, simplicity | ❌ | ✅ | ❌ |
Tracking a Multi-Market Portfolio
When your investments span GPW, NYSE, and perhaps a crypto exchange, keeping track of everything becomes a challenge. Freenance aggregates positions across Polish and international brokers, handles currency conversion, and shows your total net worth in PLN – making it easy to see the full picture.
Summary
- Start with GPW if you're a beginner – simpler taxes, no FX risk, familiar companies
- Add international exposure via ETFs as your portfolio grows
- Always file W-8BEN for US stocks
- Use IKE/IKZE to shelter gains from the 19% tax
- Don't ignore currency risk – it can significantly impact returns
The ideal portfolio combines the best of both worlds: local familiarity with global diversification.
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