How to Buy US Stocks from Singapore: What You Keep

A Singapore investor on Seedly asked in 2021 how the US would tax an S&P 500 fund. One reply said that dying with US$1 million in it would hand US$400,000 to the US government. A 2019 Seedly thread was told the dividend withholding rate for Singaporeans is 15%. Both answers are wrong, in opposite directions. The estate tax on US$1 million is US$332,800, not US$400,000. The withholding rate is 30%, not 15%. The larger mistake is one of proportion. Singapore forums spend most of their energy on the 30% dividend tax. In the worked example below, the estate tax is more than ten times as large.

This guide works out what a Singapore resident actually keeps from US shares, over ten years, from official exchange rates and IRS rate schedules. Then it reads what US companies told their own shareholders about Singapore on earnings calls. In the examples below, Singapore keeps turning up as a factory, a tax rate or an invoicing address, and much less often as a market of customers like you.

The mechanics, which every broker guide already covers

The steps are simple and the top search results cover them well. Open an account with a broker licensed by the Monetary Authority of Singapore (confirm it in MAS's Financial Institutions Directory, and check the Investor Alert List). Sign the IRS Form W-8BEN, move Singapore dollars in by FAST or PayNow, convert, and buy.

Two details matter. The W-8BEN does not cut your dividend tax: Singapore is not on the IRS's list of US income tax treaty partners, so the form only certifies that you are not a US person. And conversion costs vary far more than commissions. Interactive Brokers publishes 0.20 basis points of trade value, minimum US$2 per order (pricing page, accessed 25 September 2026). Other platforms build their charge into the quoted rate, so compare it with the mid-market rate on the same screen.

What Singapore taxes, and what the US takes regardless

Singapore's side is short. IRAS lists "foreign dividends received in Singapore by resident individuals, except those received through a partnership in Singapore" among the dividends that are not taxable. On gains, IRAS says profits from "buying and selling of shares or other financial instruments … are generally viewed as personal investments" and are generally not taxable. Someone trading often enough to look like a business is judged on the facts. Singapore also has no estate duty. It was abolished for deaths on or after 15 February 2008.

The US side is what costs you. IRS Publication 519 states the rule for non-resident aliens plainly: dividends "are generally taxed at a 30% (or lower treaty) rate," withheld by the broker at source. Capital gains "are generally not taxable if you were in the United States for less than 183 days during the year" (Publication 519). With no treaty, the 30% is final, and there is nothing to credit it against at home because Singapore does not tax the dividend. Residence, the 183-day test and trading status depend on your circumstances, so check with a qualified tax adviser in Singapore before relying on any of this.

The estate tax, computed rather than quoted

Most Singapore guides describe the estate tax as "up to 40%", which is accurate and misleading, because 40% is only the top marginal rate. A non-resident non-citizen's estate pays on US-situs assets under the same graduated schedule US citizens face, then gets a credit of only US$13,000 ("the maximum unified credit is $13,000", Form 706-NA instructions). On the rate schedule in the Form 706 instructions, US$13,000 is exactly the tax on the first US$60,000. That is where the famous threshold comes from, and above it the executor must file Form 706-NA.

Three portfolio sizes show how the tax actually lands:

Forty per cent applies only to each dollar above US$1 million. For the middle-sized portfolio a Singapore professional might build over a decade, the bill is about a quarter of the holding, paid by grieving relatives in a foreign system. Even below the filing threshold there is paperwork: the executor sends the IRS an affidavit and supporting documents, and the IRS says processing takes "12 to 18 months" (transfer certificate requirements). The answer may be a letter saying no transfer certificate is required, and when the assets are actually released depends on the custodian and the estate administration, not on that timetable alone.

Two rules decide what is caught. One is the situs rule: "stock of corporations organized in or under U.S. law is property located in the United States, and all other corporate stock is property located outside the United States" (Form 706-NA instructions). The IRS adds that US stock counts even when it is "held abroad or in a nominee's name" (IRS). A Singapore broker's custodian does not change that. The other rule is the missing treaty: the IRS names fifteen countries with US estate or gift tax treaties (list), among them Australia, Canada, Ireland, Japan and the United Kingdom. Singapore is not one.

That is why many Singapore residents hold US index exposure through Ireland-domiciled UCITS funds. The reason is structural. Such a fund is typically an Irish company, so its shares fall outside the United States under the situs rule, and the US dividends it receives are withheld at the 15% US–Ireland treaty rate (IRS treaty table 1) rather than 30%. The trade-offs are real too: these funds list in London or Amsterdam, trade less than US-listed funds, and fees vary, so read the factsheet. None of it helps with a single company. Own Nvidia itself and you own a US-situs asset.

A worked example: S$100,000, 2016 to 2026

This is the calculation the forums never finish. Assumptions: S$100,000 converted on 26 September 2016 at the Federal Reserve's noon rate of S$1.3593 per US dollar (FRED DEXSIUS). It is invested in the S&P 500, which went from 2,146.10 on that date to 7,650.50 on 18 September 2026 (FRED SP500). That is 3.565 times, about 13.6% a year in price alone. The model smooths this into a constant 13.6% price return every year. Dividends are assumed at 1.5% of each year's opening value, taxed at source and reinvested, compounded annually; a bumpier real path with the same endpoints would give slightly different withholding totals. Conversion is assumed to cost 0.5% each way (an assumption, not any provider's quote). Fees are ignored. Proceeds come home on 18 September 2026 at S$1.2775.

The extra withholding, the leak everyone argues about, cost S$7,203 over the decade, the gap between the two Singapore-dollar totals: 0.45 percentage points of value a year at 30% against 0.225 at 15%, on a 1.5% yield. The two 0.5% conversions cost about S$2,300 in cash fees (S$500 in, S$1,827 out); measured the same way as the withholding gap, on terminal value, they cost about S$3,664, because the S$500 taken at entry also lost ten years of growth. At Interactive Brokers' published commission they would have been a few dollars.

The estate tax, had the holder died on the last day, would have taken about S$89,500 at once, more than twelve times the decade's extra withholding. Withholding is a dripping tap. The estate tax is the burst pipe, and it bursts on a date nobody chooses.

The currency: the Singapore dollar strengthened

Over the same ten years, the US dollar went from S$1.3593 to S$1.2775 (FRED DEXSIUS, 26 September 2016 and 18 September 2026), a fall of 6.0% against the Singapore dollar. The route was not smooth. It peaked at S$1.4605 on 23 March 2020, in the pandemic panic, and hit its low of S$1.2616 on 11 February 2026. Had the rate stayed at 1.3593, the US-listed portfolio above would have come home as S$386,954 instead of S$363,668. The currency cost S$23,286, more than three times the extra withholding.

Most guides leave this out. MAS conducts monetary policy through the exchange rate, so the Singapore dollar's path reflects policy as well as markets. Nobody can forecast the next decade from this one. The last one shows that your return on US shares is the S&P 500 and the currency together, and the currency has not been neutral.

What US companies told their shareholders about Singapore

Inve has parsed 6,133 US earnings-call summaries from 3,158 companies (as of the September 2026 data). Since 1 January 2025, 142 of those calls, from 91 companies, mention Singapore. Reading the most detailed of them, we were surprised by a recurring theme: Singapore comes up as a factory, a tax rate or an invoicing address more readily than as a market of Singaporean customers. That is a pattern in the examples below, not a count of every mention. One part of it is countable: ten companies mention Singapore in the section that records capital programmes, and half of them are chipmakers or their equipment suppliers.

Start with the biggest number. Nvidia reported that Singapore accounted for 22% of its billed revenue in the quarter discussed on its 27 August 2025 call. Nvidia's explanation: customers have centralised their invoicing in Singapore, and more than 99% of the data-centre compute revenue billed to Singapore was for US-based customers. A country can top a geographic revenue table without buying the product.

Micron shows Singapore as a policy lever rather than a market. On its 25 June 2025 call, finance chief Mark Murphy said: "our fiscal 2026 tax rate is expected to be in the high teens percentage range following Singapore's adoption of the global minimum tax." Your own government's decision moved a US memory maker's earnings. Nine months later, on the 18 March 2026 call, Micron said it was expanding cleanroom space at its Singapore site partly because of its "decision to locate more of our NAND R&D in Singapore, where it's closer to our manufacturing." It also warned that the new cleanroom "isn't expected to provide new boost to our capacity until the second half of 2028."

Broadcom had the most recent comment. On 2 September 2026 chief executive Hock Tan told analysts: "Well, we are going to start deploying our Singapore fab for substrates. By the way, starting fiscal '27. And that would, I guess, address a key part of our supply bottlenecks." On the same call Broadcom said it had secured supply for its fiscal 2027 AI outlook and named substrates among the bottlenecks, which puts a Singapore factory on the path to that number.

The company that talks about Singapore most in this record is Las Vegas Sands, because Marina Bay Sands is Singapore. Its October 2025 call was candid about what the hotel is for. Chief executive Robert Goldstein: "Our goal is to not sell rooms, just give away people who gamble because to be honest, that's the business we're in." In January 2026 Patrick Dumont confirmed the property had crossed into Singapore's higher gaming-tax tier: "We hit the higher tax rate in July. And in the fourth quarter, there was about $44 million of impact." Singaporeans know the building from the skyline; shareholders own a casino whose profits turn on VIP hold rates and Singapore's tax tiers.

Among these examples, Singapore residents appear as customers in the largest numbers at the brokers that sell them US shares. UP Fintech, the owner of Tiger Brokers, said on its 2 June 2026 call that Singapore supplied more than a third of its first-quarter retail net asset inflow. Tianhua Wu told analysts: "for the number of new users, we expect the number to stay stable quarter-over-quarter with Hong Kong and Singapore remaining our top contributing market." On its 28 May 2026 call, Futu, which operates moomoo, said its Singapore clients' average assets had compounded at more than 50% a year over three years. These are disclosures by companies that earn commissions from Singaporean investors, so read them as salespeople describing their best market.

Consumer brands appear in these examples too, and not always on time. Chipotle chief executive Scott Boatwright said in February 2026 that the company remained "on track to open our first restaurants in 3 new partner-operated markets this year, including Mexico, Singapore and South Korea." By 29 July 2026 it had become: "We'll open our first restaurants in Seoul, South Korea this year with Singapore expected to follow shortly thereafter in early 2027 with our partner, SPC Group." Singapore slipped from 2026 into 2027 inside two quarters: a small commitment, and exactly the sort that vanishes unless someone is tracking guidance across quarters. In the other direction, Digital Realty raised its full-year renewal-spread guidance twice, from 6%–8% to 9%–11% by its July 2026 call. That followed a quarter in which renewals of leases above one megawatt re-priced 66.7% higher, with Singapore singled out. Singapore's shortage of data-centre space shows up as a US landlord's pricing power.

The examples suggest that much US exposure to Singapore is exposure to its role as a manufacturing, billing and wealth hub, not to its shoppers. Reading an earnings call transcript about the country you know best is a good test of how much any geographic disclosure really tells you.

How Inve helps a Singapore investor research a US company

Every quote above came from the structured summaries Inve produces for each US call it parses. Each records the guidance with its metric, target, period, speaker and verbatim quote; the analysts' questions, with management's answer graded direct, partial, deflected or refused; a watchlist of the numbers management said would matter next quarter; and capital programmes such as the Broadcom and Micron fabs when disclosed. The Guidance Tracker follows each commitment from call to call (38,764 rows across 899 companies as of the September 2026 data), which is how Chipotle's Singapore date could be seen slipping.

Start from the A–Z of US stocks, or the US earnings calendar for who reports this week. The call briefs and company pages are public and free, which suits the point of this guide: read what management committed to before paying the 30%, the currency and the estate risk to own it.

Where this can mislead you

The worked example is only as good as its assumptions. The yield, conversion cost and annual compounding are round numbers, the S&P 500 series is a price index, and fees are ignored; change the yield and the withholding gap moves in proportion. The estate figure assumes no deductions, which an executor disclosing the worldwide estate can partly claim, and the law can change. An Irish fund's treatment depends on its legal form, so read the prospectus, not the marketing. None of this applies to US citizens or green-card holders in Singapore, who are taxed as US persons wherever they live.

A mention is not exposure either: Nvidia's 22% is a billing address, and Marina Bay Sands is one property in a larger company. The Inve record is 6,133 calls covering roughly two years, not the whole market. It shows how these companies talk about Singapore now, not a verdict on any of them.

The strongest objection to this guide is that the estate tax only bites if you die holding US-situs assets, and most readers expect to sell first. True. But the tax does not care what you expected, and the paperwork falls on your family, not on you. If a quarter of the holding going to Washington in the worst year of your family's life is a risk you accept, the direct route is open. If not, the question to settle before choosing a broker is how you hold US equity, not which US company you buy.

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