Best ETFs for Singaporeans 2026: CSPX vs IWDA vs ES3 — The Complete Guide

Exchange-Traded Funds (ETFs) are the simplest, lowest-cost way for most Singaporeans to invest and build long-term wealth. They give you instant diversification across hundreds or thousands of companies, charge a fraction of what unit trusts cost, and require almost no active management.

But there's a catch: most ETF guides are written for Americans. As a Singaporean, your choice of ETF — and which exchange you buy it on — has significant tax implications that most online resources completely overlook. Get it wrong and you could be paying unnecessary withholding taxes, or worse, leaving your estate exposed to US estate tax.

This guide covers everything a Singaporean investor needs to know before buying an ETF.

Why the ETF You Choose — and Where It's Listed — Matters

The most popular ETFs on the internet are VOO, SPY, and QQQ. These are listed on US exchanges and are domiciled in the United States. While they're fantastic for American investors, they have two major drawbacks for Singaporeans.

Problem 1: 30% US Withholding Tax on Dividends

When a US-domiciled ETF like VOO pays a dividend, the US government withholds 30% before it reaches you. Since Singapore doesn't have a double taxation agreement with the US on this specific type of income, you cannot reclaim that 30%. For a dividend-focused investor, this is a significant drag on returns.

Ireland-domiciled ETFs (recognisable by their ISIN starting with "IE") enjoy a reduced withholding rate of 15% under the US-Ireland tax treaty. That 15% reduction compounds enormously over a 20–30 year investment horizon.

Problem 2: US Estate Tax

This is the one most investors don't know about. If you hold US-listed ETFs (like VOO or SPY) and you die with more than US$60,000 in those assets, your estate may be liable for US estate tax — up to 40% — on the amount above the threshold. This threshold is far lower than what applies to American citizens.

Switching to Ireland-domiciled UCITS ETFs completely sidesteps this risk. Ireland has a much higher estate tax exemption threshold for non-domiciled investors, making it far more suitable for Singaporeans.

The ETFs Most Singaporeans Should Consider

Here are the most suitable ETFs for Singaporean investors, ordered by popularity and ease of access.

Side-by-Side Comparison

Can You Use CPF (CPFIS) to Buy ETFs?

Yes — but only for CPF-approved instruments. The CPF Investment Scheme (CPFIS) allows you to invest your CPF Ordinary Account (OA) balance in a limited set of approved products, which includes certain ETFs listed on SGX.

The key constraint: you can only invest OA funds that exceed S$20,000 (the first S$20,000 stays in the OA earning 2.5%). For most working Singaporeans under 35, the OA balance takes time to build to this level.

CPFIS-approved ETFs include: ES3 (STI ETF), LION-PHILLIP S-REIT ETF, Nikko AM SGD Investment Grade Corporate Bond ETF (G3B), and several others. CSPX and IWDA are not CPFIS-approved as they are listed on the London Stock Exchange, not SGX.

Can You Use Your SRS Account to Buy ETFs?

Yes. The Supplementary Retirement Scheme (SRS) allows you to invest your SRS funds in a wide range of instruments including ETFs — both SGX-listed ones (ES3, G3B) and even some foreign-listed ETFs through SRS-eligible brokers. SRS contributions also reduce your taxable income, providing immediate tax savings (up to S$15,300/year for Singapore citizens and PRs).

Using SRS to buy ETFs is one of the most tax-efficient strategies available to Singapore investors — you get a tax deduction now, grow the money tax-deferred, and pay tax only at withdrawal (typically in retirement when your income — and therefore tax bracket — is lower).

Which Broker Should You Use?

Your choice of broker depends on how you want to invest and what ETFs you're buying. Here's a quick overview of the most popular options for Singaporeans:

Building Your ETF Portfolio: A Simple Framework

You don't need a complicated portfolio to invest well. Here's a framework based on your stage of life:

For Most Investors Under 45: The Two-ETF Core

Consider a simple split between CSPX (US large-cap) and IWDA (global developed markets). Since IWDA already contains ~70% US stocks, combining them directly overlaps — so most investors choose one as their primary holding, not both. CSPX is cheaper (0.07% vs 0.20%) if you're comfortable with US-heavy concentration. IWDA is preferred if you want broader geographic diversification from day one.

Adding Singapore Exposure

Add ES3 for Singapore market exposure and to use CPFIS OA funds. A 10–20% allocation to ES3 gives you home-market familiarity and dividend income in SGD, while CSPX or IWDA provides global growth. This is sometimes called the "Boglehead SG" approach: keep it simple, keep costs low, and stay diversified.

The All-World Portfolio (for the Truly Hands-Off)

If you want the simplest possible portfolio: just buy IWDA and forget about it. Rebalance once a year. It covers 1,500+ companies across 23 countries and is one of the most sensible single-ETF strategies for any long-term Singaporean investor.

Tax Considerations for Singapore Investors

Capital Gains Tax: None. Singapore does not impose capital gains tax. Profits from selling ETFs — no matter how large — are entirely tax-free in Singapore. This is one of the most investor-friendly tax regimes in the world and is a major reason ETF investing is so attractive here.

Dividend Tax: Depends on ETF domicile. Dividends from Singapore-listed ETFs like ES3 are not subject to additional Singapore tax. However, dividends from US-domiciled ETFs (VOO, SPY) are subject to 30% US withholding at source. Ireland-domiciled ETFs (CSPX, IWDA) enjoy a 15% rate — still not zero, but significantly better. Accumulating ETFs (like CSPX) avoid this entirely by reinvesting dividends rather than distributing them.

Income Tax: Only applies to employment and business income — not investment returns in the typical sense. ETF gains and most dividend income fall outside the scope of personal income tax for Singapore residents.

Common Mistakes to Avoid

• Buying US-listed ETFs as a non-US person. The US estate tax exposure alone makes this a significant risk. Always check the ISIN — IE (Ireland) or LU (Luxembourg) domicile is far preferable to US (US).
• Over-diversifying with too many ETFs. Three ETFs can deliver returns as good as twenty. Adding ETFs that overlap (e.g., CSPX + IWDA together) just increases complexity without reducing risk.
• Ignoring total cost of ownership. Expense ratio is just one cost — also consider brokerage commissions, foreign exchange fees, platform fees, and bid-ask spreads.
• Stopping during market crashes. The worst thing you can do is sell your ETFs when markets fall 20–30%. Those are the exact moments when dollar-cost averaging delivers the most long-term value.
• Not using CPF and SRS accounts. These tax-advantaged accounts are underused by most Singaporeans. Your SRS contribution gives you an immediate tax deduction and lets you invest in ETFs tax-deferred.

Track Your ETF Portfolio with FinSight SG

Once you've made your first ETF purchase, tracking your portfolio's performance, dividend income, and allocation becomes important — especially as your holdings grow across multiple brokers and account types (cash, CPFIS, SRS).