Forex Risk in Investing Singapore — How Currency Risk Affects Your SGX Portfolio

Forex risk (foreign exchange risk) in investing Singapore refers to the potential loss or gain arising from fluctuations in exchange rates between the Singapore dollar (SGD) and the currency in which an investment is denominated or generates income.

For informational purposes only. Not financial advice.

Table of Contents

What Is Forex Risk for Singapore Investors?

When a Singapore investor holds assets denominated in a foreign currency — such as US dollar ETFs, Japanese yen-generating REITs, or Australian dollar dividend stocks — the investment return is affected by two factors: the performance of the asset itself, and the movement of the exchange rate between that currency and the Singapore dollar (SGD).

If the SGD strengthens against the foreign currency, the SGD value of your foreign-currency investment falls even if the underlying asset price is unchanged. Conversely, if the SGD weakens, your SGD return is boosted.

For Singapore retail investors, forex risk is a common and often overlooked risk — particularly as Singapore investors have a high propensity to invest in US stocks (S&P 500 ETFs), Japan-focused REITs, or globally diversified funds.

How Forex Risk Affects S-REITs

Many Singapore REITs own overseas assets and generate income in foreign currencies. Examples as at Q1 2026:

When SGD strengthens against JPY (as has been the trend in recent years), Parkway Life REIT’s DPU in SGD terms is reduced even if the JPY income stream remains stable. REIT managers often hedge a portion of their forex exposure using forward currency contracts to reduce this volatility, but hedging is not always complete.

Forex Risk in ETFs and Overseas Stocks

Singapore investors buying US-listed ETFs (e.g., Vanguard S&P 500 ETF or CSPX) or directly trading US stocks on NYSE/NASDAQ incur USD/SGD forex risk. The SGD value of the investment fluctuates with the USD/SGD exchange rate.

Over the past decade, the SGD has generally been relatively stable against the USD (SGD/USD has ranged roughly 1.30 to 1.40 over 2015–2026). The MAS manages the SGD’s exchange rate within an undisclosed policy band, using the SGD Nominal Effective Exchange Rate (NEER) as its primary monetary policy tool. This active management means SGD is generally less volatile than many emerging market currencies.

However, during periods of strong USD (e.g., 2022 Fed rate hiking cycle), the SGD/USD rate can move meaningfully, impacting the SGD-denominated return of USD-asset portfolios.

How to Manage Forex Risk as a Singapore Investor

Diversification across currencies: Holding a mix of SGD, USD, JPY, and EUR assets naturally hedges some forex exposure — not all currencies move together.

Use SGD-hedged ETF classes: Some ETFs listed on SGX or accessible via brokers offer SGD-hedged share classes (denoted “SGD hedged”), where the fund manager uses currency forwards to remove (or reduce) the currency exposure for SGD investors. The hedge comes at a cost (typically 0.1–0.3% per annum for developed markets).

Accept natural hedging: If you plan to retire in Singapore spending SGD, and your portfolio generates income in USD, some investors accept the forex risk given that USD/SGD has been relatively stable historically.

Evaluate REIT hedging policies: When investing in S-REITs with significant overseas income, check the REIT’s annual report or manager’s commentary on its hedging strategy. Some REITs hedge 12–24 months forward; others are largely unhedged.

SGD vs Foreign Currencies — Historical Context

The MAS actively manages SGD against a basket of currencies (the NEER). This means the SGD is not a free-floating currency and tends to be less volatile than currencies without active central bank management.

SGD has historically been a strong, appreciating currency over multi-decade periods. For Singapore investors with a long-time horizon, the gradual SGD appreciation has eroded some returns on foreign-currency assets held over the long term.

For example, an investor who held US stocks over 2010–2026 benefited from strong USD/SGD tailwinds during certain years (USD strengthening) but faced headwinds in others. Net-net, the currency impact over a full cycle tends to be manageable for diversified global portfolios.

For Singapore-focused investors who prefer to minimise forex risk, a portfolio anchored in SGD-denominated assets (Singapore banks, local REITs, SGS bonds, SSBs) provides the clearest currency alignment. See more at Singapore Savings Bonds and S-REIT Guides.

Frequently Asked Questions

Disclaimer: Content on The Kopi Notes is for educational purposes only and does not constitute financial advice.