Interactive Brokers Low FX margin Global Access Interactive Brokers Review 2026
Updated Reviewed quarterly
A global brokerage platform. Low FX margin, tiered commissions, and access to 150+ markets worldwide.
Editorial scorecard
Interactive Brokers — 3.6 / 5
Global broker with the lowest published all-in cost of platforms reviewed. Steeper learning curve and minimal NZ-specific tax tooling — suited to portfolios over NZ$50K or active multi-market investors.
As at 2026-05-04
| Fees & FX | ●●●●● 5 | Tiered commissions from US$0.35; FX margin ~0.002% (lowest published of platforms reviewed). |
| Market access | ●●●●● 5 | Global — NYSE, NASDAQ, NZX, ASX, LSE, HKEX, TSE, plus options + futures. |
| NZ tax fit | ●●◐○○ 2.5 | W-8BEN handled at onboarding; tax statements minimal — FIF disclosure is the investor's job. |
| UX & onboarding | ●●◐○○ 2.5 | US-style interface with high learning curve; account screens are dense and feature-loaded. |
| Support | ●●●○○ 3 | 24/7 chat + email; not NZ-specific; SIPC custody under IBKR's US parent. |
Five-criterion 1-5 editorial scoring. Overall is the unweighted mean. Methodology →
Tiered
Per-share US trade pricing
~0.002%
FX margin (lowest reviewed)
None
Monthly fee
150+
Markets
What is Interactive Brokers?
Interactive Brokers (IBKR) is a US-based brokerage founded in 1978 that serves professional traders and sophisticated investors globally. It's publicly traded on NASDAQ and is one of the largest brokers worldwide.
For NZ investors, IBKR offers the lowest overall costs — especially for larger portfolios or frequent traders. The tradeoff is a steeper learning curve and a more complex interface.
IBKR Fees Explained
| US ETF trade — IBKR Pro Tiered | US$0.0035/share, US$0.35 minimum per order, max 1% of order value |
| US ETF trade — IBKR Pro Fixed | US$0.005/share, US$1 minimum per order |
| FX conversion (NZD↔USD) | ~0.002% on interbank rate + US$2 minimum per FX trade |
| Monthly account fee | None |
| Inactivity Fee | None (removed July 2021) |
| Deposit | Free (bank transfer) |
| Withdrawal | 1 free/month, fee thereafter (see IBKR site) |
NZ residents typically open IBKR LLC accounts on the Pro plan. IBKR Lite (zero-commission US stocks) is US-resident only. Verify your account type's exact fee schedule on interactivebrokers.com.
Example cost
Investing NZ$10,000 in a US ETF: roughly US$2 FX fee (minimum applies, 0.002% on interbank is well under $2) + ~US$0.35-1.00 brokerage = approximately NZ$4-5 total. This is markedly cheaper than Sharesies / Hatch on large orders where the US$2 FX minimum becomes a tiny fraction of the trade.
Pros & Cons
Pros
- Lowest fees in the industry
- Competitive FX rates for retail investors
- Access to 150+ markets globally
- Professional-grade research tools
- No monthly or inactivity fees
- Margin, options, and advanced features
Cons
- ✕ Steep learning curve
- ✕ Complex, overwhelming interface
- ✕ No NZ-based customer support
- ✕ Manual FX conversion (not automatic)
- ✕ Can be intimidating for beginners
Who Typically Uses IBKR?
May Suit:
- • Mid-to-large portfolios where FX margin dominates total cost
- • Fee-conscious long-term investors
- • Those wanting global market access
- • Investors comfortable with complexity
- • Frequent traders
May Not Suit:
- • Complete beginners
- • Those wanting a simple mobile app
- • Small portfolios — IBKR's per-trade fee floor dominates
- • People wanting NZ phone support
IBKR vs Hatch: how the cost-curve scales
The structural difference between IBKR and Hatch is per-trade brokerage vs FX margin. Hatch's flat US-dollar per-trade fee dominates total cost at small trade sizes (where the flat fee is a large % of order value). IBKR's tiered per-share brokerage starts low but adds a small minimum FX fee per conversion — meaning IBKR is highest-value when orders are large enough that the FX minimum is a tiny % of the trade, AND when you batch FX conversions (rather than converting on every trade).
Rough heuristic: for small one-off purchases, the two platforms are close on total cost. As order size grows IBKR pulls ahead because the FX minimum stays flat while Hatch's brokerage tier is a fixed multiplier. For high-volume frequent traders, IBKR's tiered pricing is materially cheaper because per-trade brokerage stays low while Hatch's flat per-trade fee compounds.
Verify current rate cards: IBKR commission page · Hatch pricing page · or use our Sharesies vs Hatch comparison for the related side-by-side.
FAQ
Common questions about Interactive Brokers
Is Interactive Brokers regulated for NZ residents?⌄
NZ residents open accounts through IBKR Australia (Interactive Brokers Australia Pty Ltd), which holds an Australian Financial Services Licence. Cash is held with IBKR's US parent under SIPC protection (US$500K, including US$250K cash). NZ-specific FMA registration is not required for cross-border brokerage of this kind.
What's the all-in cost on a US$10,000 ETF buy via IBKR?⌄
Tiered pricing: ~US$0.35–US$1 commission depending on share count, plus FX margin of ~0.002% on the NZD→USD conversion (lowest published of platforms reviewed). All-in cost typically US$3–US$5. Compare to Hatch (~US$50 on the same trade) and Sharesies (~US$190). IBKR's cost advantage compounds at larger order sizes.
Does IBKR auto-file W-8BEN for the NZ–US tax treaty?⌄
During account onboarding, IBKR collects a W-8BEN to apply the 15% NZ–US tax treaty rate (down from the 30% statutory withholding). The form must be re-certified every 3 calendar years; IBKR prompts via the Account Management portal. Keep a copy for IR3 supporting docs.
Is IBKR worth the learning curve for occasional NZ investors?⌄
For one-off NZ$1,000 trades, the FX savings (~NZ$15 vs Hatch on a NZ$10K trade) don't typically justify the steeper interface and US-style account screens. IBKR is more suited to portfolios over NZ$50K, frequent traders, or investors who want global market access (HKEX, LSE, TSE) that Hatch and Stake don't offer.
Summary
Interactive Brokers has among the lowest published fees of platforms available to NZ investors, with access to 150+ global markets. The platform has a steeper learning curve, and fee savings can compound over time for larger portfolios.
Interactive Brokers Open an account on Interactive Brokers
Global market access at the lowest published FX margin. IBKR Pro from US$0.35/trade, ~0.002% FX with US$2 minimum.
Opens Interactive Brokers. We don't take any payment for placement or for clicks — see disclosure.
Related platforms + ETFs
Hatch — simpler NZ-built alternative
Easier UI; higher FX than IB.
Stake — commission-free alternative
US$0 trades, 0.7% FX.
Compare all 11 NZ platforms
Side-by-side comparison.
How to buy US ETFs from NZ
IB supports global multi-market access.
NZ-listed ETFs
IB also handles NZX trading.
FIF tax explained
When the FIF regime kicks in (NZ$50K threshold) + how it lands on your IR3.
