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 →
~$1
Per US trade
0.03%
FX spread
$0
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 | $0 (IBKR Lite) or ~$1 (Pro) |
| FX Conversion | ~0.03% (interbank rate + tiny spread) |
| Monthly Fee | $0 |
| Inactivity Fee | $0 (removed in 2021) |
| Deposit | Free (bank transfer) |
| Withdrawal | 1 free/month, then $10 |
Example Cost
Investing $10,000 NZD: ~$3 FX fee (0.03%) + ~$1 brokerage = ~$4 NZD total cost (0.04% of investment). This is 10-20x cheaper than most NZ platforms.
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:
- • Portfolios over $20,000-50,000
- • 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 (under $5,000)
- • People wanting NZ phone support
IBKR vs Hatch: Cost Comparison
| Investment Size | Hatch Cost | IBKR Cost | Savings |
|---|---|---|---|
| $1,000 | ~$10 | ~$2 | $8 |
| $10,000 | ~$55 | ~$5 | $50 |
| $50,000 | ~$255 | ~$20 | $235 |
*Includes FX conversion and brokerage for a single trade. Hatch includes annual subscription.
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.
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.