Brokerage Accounts for Non-U.S. Residents & Visa Holders: Firstrade vs. IBKR vs. Schwab (2026)

A Korean resident trying to buy a U.S. ETF and an F-1 student living in California can both be called “international investors.” Yet they should not necessarily apply to the same brokerage account.

One may be eligible for an international brokerage program; the other may need a domestic U.S. account and a different tax certification. Selecting an app before checking these distinctions is an expensive way to discover that a product is unavailable.

Research checked: October 16, 2026. This is a review of the brokers’ publicly available documentation—not an application test, an account approval promise or a live fee quote. Supported countries, account products, fees and tax requirements can change.

Start with an important distinction: non-U.S. citizen does not mean non-U.S. resident

A U.S. citizen working in Seoul, a Korean citizen living in Seoul, and an H-1B holder living in Texas can have three different routes. Immigration status is not the same as federal tax residency; neither alone determines a brokerage firm’s account-opening rules.

These are research starting points—not individual eligibility decisions. If you currently live in the United States, begin with our brokerage eligibility and documents guide before using an overseas-resident comparison.

Broker comparison: verified access, not a ranking

Evidence boundary: Firstrade and IBKR explicitly publish South Korea on their general country lists. This is stronger evidence than guessing from user reviews. Schwab’s public application uses a country selector; the general international product page does not, by itself, confirm approval for every country. None of these observations confirms that an individual applicant has passed KYC or compliance screening.

Case study: a Korean resident with no U.S. visa

Consider a hypothetical Korean citizen living in Seoul who wants to invest $1,200 over the next 12 months. They are not applying from a U.S. home address, and they do not have a U.S. Social Security number. This is not an F-1 or H-1B brokerage application.

Route A — Firstrade International

Firstrade’s international page explicitly lists South Korea and says the international program is for applicants who are not U.S. citizens or permanent residents; its page also uses specific SSN/Tax-ID wording that needs to be checked against the applicant’s actual U.S. and foreign tax identifiers. Do not confuse having a Korean tax number with having a U.S. SSN or ITIN. Ask Firstrade which information is required for your particular country and account.

The published process involves an online application, a passport image and funding instructions; approval remains conditional. Firstrade advertises $0 online commissions for eligible stock and ETF transactions, but funding through a foreign bank can generate third-party transfer and currency-conversion costs. See Firstrade’s international-account criteria and supported regions.

Route B — Interactive Brokers

IBKR lists “Republic of Korea” among available countries and offers access to multiple global markets, subject to entity, product and regulatory restrictions. It does not follow that a South Korean resident gets IBKR Lite’s commission-free U.S. stock pricing: IBKR’s public pricing page identifies Lite as a U.S.-resident option. The applicant should instead model the relevant IBKR Pro plan.

IBKR Pro’s published U.S. stock/ETF commission schedule (up to 300,000 shares of monthly volume) shows Fixed at $0.005 per share, $1 minimum per ordinary whole-share order; Tiered starts at $0.0035 per share, $0.35 minimum per ordinary whole-share order, with eligible third-party exchange/clearing and regulatory fees added. Pricing caps and fractional-share rules can modify an individual trade. Check IBKR’s full commission table.

Route C — Schwab International

Schwab’s current international brokerage page advertises a $0 minimum opening deposit for eligible individual or joint accounts and $0 online listed-equity commissions. That is notably different from an older Schwab application PDF that mentioned a $25,000 opening deposit in 2021. The current public product page—not the old PDF—is our baseline, but the specific country application and any special program terms still control.

Schwab directs applicants to select their country of residence and lists identity documents such as passport, tax number and residence evidence. It also discloses a $25 service fee for outgoing wire transfers on the international product page. We have not concluded that a South Korean applicant will be accepted solely from these global pages. Check the current country-specific application.

KoruVest original cost worksheet: 12 small purchases or one larger purchase?

“$0 commissions” versus “low commissions” is not enough. Order size and frequency change the percentage of your money spent on trading. Below is a reproducible scenario using a hypothetical eligible U.S.-listed security consistently priced at $100 per whole share, with a total $1,200 invested over one year. No actual stock, investment return, market spread or execution result is implied.

Calculation: for 12 separate one-share orders, IBKR Fixed is 12 × max($0.005, $1 minimum) = $12; IBKR Tiered base commission is 12 × max($0.0035, $0.35 minimum) = $4.20. These illustrations exclude third-party fees, order-specific caps, different local pricing entities, currency charges, market spreads, taxes and any special promotional or no-transaction-fee ETF eligibility.

Interpretation: $12 equals 1% of $1,200 invested; $4.20 equals 0.35% before Tiered external fees. Reducing order frequency reduces the illustrated commission, but it may also delay investment and alter market exposure. This is a cost illustration, not a recommendation to change investment timing.

The cost many comparisons miss: getting money in and out

For a cross-border investor, a trade that costs $0 can still be expensive if the deposit, conversion or withdrawal incurs fees.

The $15 and 0.40% inputs are intentionally assumed; they are not actual Firstrade, IBKR, Schwab, Korean bank or live FX quotes. The $25 Schwab outgoing-wire service charge is sourced from the broker’s official international account page. Actual bank and correspondent fees depend on the transfer route. Ask your bank which exchange rate, fee basis and beneficiary deductions apply.

A useful comparison records the total amount sent, the amount credited to your investment account, the cash available after any conversion, and the amount that can be withdrawn. That result can be more meaningful than a trade-commission headline.

U.S. visa holders should follow a different checklist

An F-1 student or H-1B employee who actually resides in the United States should not reuse the eligibility results for the Korean-resident example. Domestic brokerage accounts may require a real U.S. residential address, SSN or ITIN, an immigration document and tax-residency certification. Each broker defines its own account eligibility; the presence of a visa is not an automatic approval.

For an F-1-specific explanation, read Can F-1 Students Invest in Stocks? For a U.S.-resident app comparison, use Robinhood vs. SoFi vs. Webull for Visa Holders.

If you will graduate, lose a qualifying address or relocate, ask the broker in writing about retaining existing positions, submitting new trades, transferring securities, moving cash out, required tax documents and possible account restrictions. Do not rely on an answer about account-opening eligibility to determine post-move servicing.

Tax documentation: don’t decide W-8BEN versus W-9 from your passport

U.S. federal tax residency is a tax-law analysis separate from immigration category. A non-U.S. citizen may still be a U.S. person for federal tax reporting. An F-1 student may have rules under the substantial presence test that differ from an H-1B worker. Your broker needs the correct certification for your actual status.

Under IRS guidance, Form W-8BEN is generally used by qualifying foreign individual beneficial owners to certify foreign status and claim an applicable treaty rate. A U.S. person generally uses Form W-9. Do not submit both interchangeably because you hold a foreign passport.

The IRS generally states 30% withholding for U.S.-source dividends paid to nonresident aliens unless a lower treaty rate or other relief applies. A treaty outcome depends on actual residence, beneficial ownership, the income and completed documents; treaty benefits are not automatic. See IRS withholding guidance and our W-8BEN and U.S. withholding guide.

Important separate issue for long-term investors: the IRS generally requires a Form 706-NA estate-tax filing in applicable nonresident/noncitizen situations when U.S.-situated property plus relevant adjustments exceeds a $60,000 filing threshold, subject to the detailed rules and potential treaty provisions. It is not a blanket $60,000 tax bill or a rule that every account above $60,000 is taxable. Investors with meaningful U.S.-situs holdings should discuss the exposure with a qualified cross-border tax adviser. Read the IRS explanation.

What SIPC protection does—and does not—mean for international investors

SIPC explains that an eligible customer of a SIPC-member U.S. brokerage firm does not need to live in the United States or hold U.S. citizenship for normal SIPC customer treatment. Protection generally has a $500,000 limit, including a $250,000 limit for cash, when customer securities or cash are missing after a member brokerage fails. It does not protect stock prices from falling or insure investment returns.

For a global brokerage group, ask which legal entity carries your account and what protection regime actually applies: a provider’s brand name is not enough to assume its every subsidiary is subject to the same U.S. SIPC coverage. Read SIPC’s official protection explanation.

Eight-question pre-application worksheet

Use these questions before sending identification documents or wiring money:

1. Country: Is my true current country of residence accepted for this specific account and legal entity?
2. Status: Does the product allow my citizenship/green-card/visa circumstances, not just my nationality?
3. Documents: Which passport, tax number, identity and proof-of-address documents must I submit?
4. Assets: Can this account buy the U.S. ETFs or other securities I intend to trade?
5. Plan: Which trading fee schedule actually applies to me—especially IBKR Pro versus Lite?
6. Funding: What is the full bank-to-broker cash cost, including exchange-rate spread and intermediaries?
7. Protection and tax: Which legal broker entity holds the assets, and which tax certification is appropriate?
8. Exit: If I move countries, can I keep assets, trade, withdraw, or transfer without unexpected restrictions?

Do not send unprotected passport scans, tax IDs or bank credentials in an ordinary support email. Use the broker’s secure official channels.

KoruVest research method, limitations and decision

On October 16, 2026, we checked the brokers’ official international eligibility pages, supported-country listings, published account minimums, U.S. equity pricing and wire-fee disclosures, plus IRS and SIPC rules. We then constructed the $1,200 trade-frequency example and the separate $5,000 transfer-budget example using clearly stated assumptions. We did not open accounts, test withdrawals, interview customers or submit sample applications. On November 5, 2026 we additionally cross-checked the Firstrade/IBKR country listings, IBKR Lite eligibility and Schwab country-selector and product minimum against the official sources linked in the evidence card; this does not re-date or replace every October fee comparison.

For a South Korea resident, Firstrade and IBKR offer two explicitly documented country-list starting points, while Schwab requires country-specific verification. Firstrade and Schwab advertise eligible U.S. online equity trades at $0 commissions; IBKR Pro’s transaction-based charges make trading frequency worth modeling. For an F-1 or H-1B holder living in the United States, verify domestic account rules instead. For any investor expecting to move, write down the exit and tax-document process before funding.

There is no universal winner. The best next step is the broker whose official requirements match your actual situation and whose total cost and account rules you can verify—not the platform with the loudest “$0” headline.

Related KoruVest guides

• Brokerage Eligibility Research Desk: Six Published Rules That Change the Answer (2026) — dated official evidence for six firms
• Brokerage Accounts for Non-U.S. Citizens: Eligibility, Documents & How to Open One (2026)
• Can F-1 Students Invest in Stocks? (2026 Guide)
• Robinhood vs. SoFi vs. Webull for Visa Holders: Eligibility & Features (2026)
• W-8BEN and the 30% Tax: How Foreign Investors Cut US Withholding
• Leaving the U.S. on an H-1B: What Happens to Your 401(k)?

Official primary sources

• Firstrade — International account eligibility and supported countries
• Firstrade — Published trading pricing
• Interactive Brokers — Available countries and territories
• Interactive Brokers — U.S. stock/ETF fees and Lite eligibility
• Interactive Brokers — Withdrawals and other fees
• Charles Schwab — Current international brokerage minimums, commissions and wires
• Charles Schwab — Account documents and country selection
• IRS — Instructions for Form W-8BEN
• IRS — Nonresident withholding and dividends
• IRS — Nonresident/noncitizen estate-tax filing considerations
• SIPC — What SIPC protects

Claims checked against the listed public resources on October 16, 2026. The comparison applies to publicly described products and not every jurisdiction-specific contract. KoruVest currently reports no affiliate relationships or paid brokerage placements. If commercial links are added in the future, they must be clearly disclosed near the link. This comparison is organized by published eligibility and stated fees, not compensation.

Originally published: July 17, 2026 · Full comparison reviewed: October 16, 2026 · Official source-ledger addendum checked: November 5, 2026