The council recommends
On: "what is the good way to invest 20000 USD in Warsaw Poland?"
Top pick
Core global ETF inside IKE (plus IKZE), with a smaller safety sleeve in inflation-linked Polish bonds
Open an IKE (and, if you have taxable income in Poland, an IKZE) at a low-cost broker with ETF access, e.g. mBank/Biuro maklerskie, XTB or Interactive Brokers. Fill this year's IKE/IKZE limits first (roughly 26k PLN IKE + ~10-12k PLN IKZE, employees), then hold the rest in a regular brokerage account. Put the core — about 70-80% of the 20,000 USD — into a single accumulating global equity ETF (Vanguard FTSE All-World / VWCE, or iShares Core MSCI World / EUNL if you accept developed-markets-only). Keep 20-30% in inflation-linked Polish Treasury bonds (EDO 10-year, COI 4-year) as ballast and for any money you might need in 3-5 years. This is the compromise the council converges on: all three back the ETF core and the IKE/IKZE wrapper; the bond sleeve honours the one expert arguing for downside protection without giving up long-term growth. Do NOT try to buy Warsaw property with this amount, and avoid Polish actively managed funds with high fees. Assume you already have a separate 3-6 month emergency fund; if you don't, carve it out first from the 20,000 before investing.
Runner-up
The pure 40/40/20 balanced split (inflation-linked bonds / global ETF / high-interest savings) — the right choice if your horizon is under 7 years, your income is unstable, or a 30-40% drawdown would make you sell.
Wildcard
Skip currency conversion risk by choosing the EUR- or PLN-hedged/denominated share class and instead consider Beta ETF / GPW-listed global ETFs in PLN — cheaper FX handling for a Poland-based investor; another angle is a small (max 5-10%) satellite in a Warsaw-listed real-estate/REIT-like exposure to get property upside without owning an apartment.
Best time
Act within the next 2-4 weeks on the account setup, and use IKE/IKZE contributions before 31 December to secure this year's limit (IKZE also gives a tax deduction in your PIT). Deploy the ETF money in 3-4 monthly tranches to smooth entry and USD/PLN conversion, rather than one lump sum, and buy the EDO/COI bonds in the month you set up the plan since their rates reset monthly.
82%
aligned
All three experts converge on low-cost global ETFs held inside Polish tax-advantaged accounts (IKE/IKZE) and reject Warsaw real estate at this capital level; they differ mainly on how much to keep in bonds and cash.
Where they agree
✓Broad, low-cost global equity ETFs (VWCE / MSCI World / S&P 500) are the core of the portfolio — not active funds, not single Polish stocks.
✓Use Polish tax-advantaged accounts (IKE, then IKZE) first to avoid the 19% 'podatek Belki' on capital gains.
✓Buying a Warsaw apartment with $20,000 is rejected: too little for a sensible down payment plus transaction costs, taxes and liquidity risk.
✓A long horizon (7+ years) is required for the equity part; short-term money should not be in stocks.
Where they diverge
↔Allocation: openai and google go effectively 100% equity ETF (minus a short-horizon cash reserve), while anthropic splits 40% inflation-linked bonds / 40% ETF / 20% savings account.
↔Role of Polish Treasury bonds (EDO/COI): anthropic treats them as a permanent 40% core; openai only for money needed within 3-5 years; google barely uses them.
↔Index choice: openai insists on all-world accumulating (VWCE); google accepts S&P 500 (VUSA) or MSCI World (EUNL), i.e. developed-markets-only or US-only exposure.
↔Emergency cushion: anthropic explicitly carves out 20% in a high-interest savings account; the others assume the emergency fund exists outside these 20,000 USD.
The 3 takes
GPT-5.6 TerraLens · long-horizon simplicity
Put essentially everything into one accumulating global ETF (VWCE) via a cheap broker, filling IKE/IKZE capacity first, and keep only 3-5 year money in cash or inflation-linked Polish bonds.
84% confident
Claude Sonnet 5Lens · risk balance & liquidity
A three-bucket split: 40% inflation-linked Polish Treasury bonds, 40% global equity ETF inside IKE/IKZE, 20% in a high-yield savings account as a buffer.
68% confident
Gemini 3.1 Flash LiteLens · cost efficiency & tax optimisation
Allocate the whole sum to a diversified ETF portfolio held in an IKE or IKZE brokerage account to minimise capital gains tax.
83% confident
Synthesized from 3 independent expert passes. Treat as informed input, not a guarantee — your own judgment is the final vote.