Best Brokers for Singapore Investors Buying US Stocks
Singapore investors have one of the most straightforward paths to US stocks globally — no capital controls, low withholding tax under the US–Singapore treaty (15% on dividends), and access to all major international brokers. Interactive Brokers Singapore is the dominant choice for cost-conscious investors: 0.08% FX markup on SGD/USD conversion, $0.005/share US equity commission, and MAS-regulated. Tiger Brokers and Moomoo (Futu) offer simpler onboarding but slightly higher FX spreads. The key tax consideration: US estate tax applies to non-US persons holding US-situs assets (including US-listed ETFs) above $60,000. UCITS alternatives like CSPX (S&P 500 UCITS ETF) avoid this risk.
Market
US Stocks
S&P 500
Top ETF
CSPX
CSPX (UCITS S&P 500 ETF, Ireland-domiciled)
Your currency
🇸🇬 SGD
Singapore
FX cost reality check
On SGD 13,500 (~$10,000) invested in US stocks: IBKR SGD/USD conversion cost ≈ SGD 11 (0.08%). Tiger Brokers conversion ≈ SGD 25–35 (0.2–0.25%). A local bank wire + foreign broker ≈ SGD 80–120. Annual saving with IBKR on a SGD 200,000 portfolio: ~SGD 300–500.
Best brokers for Singaporean investors in US stocks
Ranked by FX conversion cost — the biggest variable cost for international investors.
Interactive Brokers
The lowest FX spreads of any mainstream broker — 0.08–0.2% mid-market margin across all major corridors.
Tiger Brokers
Low-cost US and HK stock access for Asian investors
moomoo
Commission-free investing with advanced charting for Asian markets
About US Stocks: what Singaporean investors need to know
Why invest here
The US market has returned ~10% annualised over the past century. It houses the world's most innovative technology, healthcare, and consumer companies, with unmatched liquidity and corporate governance standards.
Key risk
USD currency risk vs your home currency; US estate tax for non-US holders of US-domiciled assets
Benchmark index
S&P 500
Recommended ETF (non-US investors)
CSPX (UCITS S&P 500 ETF, Ireland-domiciled)
Regulation for Singaporean investors
No capital controls on outbound investment from Singapore. MAS regulations apply to Singapore-licensed brokers (IBKR Singapore, Tiger Brokers SG, Moomoo SG). US estate tax applies to non-US persons on US-situs assets above $60,000 — use UCITS ETFs (CSPX, IWDA) to mitigate. SRS (Supplementary Retirement Scheme) funds can be invested in approved unit trusts and ETFs but not directly in individual US stocks.
Tax treatment for Singaporean investors in US stocks
Singapore has no capital gains tax. Dividend income from US stocks is subject to 15% US withholding tax (reduced from 30% under the US–Singapore tax treaty). There is no Singapore income tax on foreign-sourced dividends received by individual investors. CPF funds cannot be used to invest directly in US stocks.
Not tax advice. Tax laws change frequently. Consult a qualified tax professional in Singapore before making investment decisions.