Interactive Brokers vs Capital Index 2026: Which Broker is Better?
Choosing between Interactive Brokers and Capital Index depends on your trading style, preferred markets, and budget. Interactive Brokers is headquartered in Greenwich, USA, while Capital Index operates from London, UK. Interactive Brokers has the longer track record, established in 1978, compared to Capital Index which was founded in 2014. This in-depth comparison covers regulation, fees, platforms, markets, and overall ratings to help you decide which broker is the better fit in 2026.
Interactive Brokers
Capital Index
| Interactive Brokers | Capital Index | |
|---|---|---|
| BrokerRank Score | 4.4/5 ✓ | 3.2/5 |
| Min. Deposit | $0 ✓ | $100 |
| Spread from | 0.2 pips | 0 pips ✓ |
| Max Leverage | 1:4 | 1:500 ✓ |
| Regulation | SEC, CFTC, FCA ✓ | FCA |
| Platforms | Proprietary Web, Proprietary Mobile | MT4, MT5 |
Interactive Brokers is the better choice overall, scoring 4.4/5 vs 3.2/5 on BrokerRank's independent rating. On fees, Capital Index offers lower spreads (0 pips).
See full side-by-side comparison belowInteractive Brokers vs Capital Index: Key Differences
Interactive Brokers
WinnerCapital Index
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Fees Comparison
Interactive Brokers
Capital Index
Regulation & Trust
Interactive Brokers holds licences from SEC, CFTC, FCA. Capital Index is regulated by FCA.
Markets & Assets
Both brokers offer access to Forex, Cfd, Indices, Commodities markets. Interactive Brokers additionally covers Stocks. Capital Index adds Crypto.
Fees & Spreads
On spreads, Capital Index is more competitive with EUR/USD spreads from 0.0 pips, compared to 0.2 pips at Interactive Brokers.
Trading Platforms
Interactive Brokers supports Proprietary Web, Proprietary Mobile. Capital Index offers MT4, MT5.
Minimum Deposit
Interactive Brokers requires no minimum deposit, while Capital Index sets a minimum deposit of $100. This makes Interactive Brokers accessible to traders with any budget.
Overall Ratings
BrokerRank scores Interactive Brokers at 4.43/5 and Capital Index at 3.21/5, based on 50+ data points covering regulation, fees, platforms, markets, and user experience. Interactive Brokers leads overall with a clear advantage.
BrokerRank Verdict
Who Should Choose Which?
Interactive Brokers
4.4/5
Choose Interactive Brokers if you want…
- Higher overall rating (4.4/5)
- No minimum deposit
- More regulatory licences (5)
- More established (est. 1978)
Capital Index
3.2/5
Choose Capital Index if you want…
- Tighter spreads (from 0 pips)
- Higher leverage (up to 1:500)
Also consider
We earn a commission when you open an account through these links, at no extra cost to you. Our ratings are scored independently — see the full independent ranking.
Both Interactive Brokers & Capital Index are available in
Frequently Asked Questions
1Is Interactive Brokers better than Capital Index?
Interactive Brokers scores higher overall on our independent rating system. Interactive Brokers holds a 4.4/5 rating vs Capital Index's 3.2/5. The best choice ultimately depends on your trading style — see our full verdict above for a detailed breakdown.
2Which has lower fees, Interactive Brokers or Capital Index?
Interactive Brokers offers spreads from 0.2 pips, while Capital Index starts at 0 pips. Check the fees section above for a full breakdown.
3What is the minimum deposit for Interactive Brokers vs Capital Index?
Interactive Brokers requires a minimum deposit of $0. Capital Index requires $100.
4Which broker is safer, Interactive Brokers or Capital Index?
Interactive Brokers is regulated by SEC, CFTC, FCA, MAS, ASIC, while Capital Index holds licences from FCA.
5What trading platforms do Interactive Brokers and Capital Index support?
Interactive Brokers supports Proprietary Web, Proprietary Mobile. Capital Index supports MT4, MT5.
6Can I use both Interactive Brokers and Capital Index?
Yes, you can hold accounts at multiple brokers simultaneously. Many traders diversify across platforms to access different markets and tools.
Key Trading Terms
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Trading involves risk. Past performance is not indicative of future results. Capital at risk. Full risk disclosure.
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