Fidelity vs Interactive Brokers options fees (2026)
Both charge $0.65 per contract for stock/ETF options. Exercise/assignment fees can't be compared because Fidelity doesn't publish one we could verify. At the smallest balance tier each lists, Fidelity charges 12.075% ($0-$24,999) and Interactive Brokers charges 5.38% (Pro $0-$100k).
| Fidelity | Interactive Brokers (Lite / Pro <=10k contracts) | |
|---|---|---|
| Per-contract commission | $0.65 Source: www.fidelity.com, retrieved 2026-10-25 | $0.65 Source: www.interactivebrokers.com, retrieved 2026-10-25 |
| Exercise / assignment fee | unverified (not listed on commissions page; full fee PDF returns 403) Source: www.fidelity.com, retrieved 2026-10-25 | $0.00 Source: www.interactivebrokers.com, retrieved 2026-10-25 |
| Index option fees | unverified (page says certain proprietary options have additional fees) Source: www.fidelity.com, retrieved 2026-10-25 | exchange fees passed through (Pro); amount varies Source: www.interactivebrokers.com, retrieved 2026-10-25 |
| Margin rates | $0-$24,999: 12.075% $25,000-$49,999: 11.575% $50,000-$99,999: 10.625% $100,000-$249,999: 10.575% $250,000-$499,999: 10.325% Source: www.fidelity.com, retrieved 2026-10-25 | Pro $0-$100k: 5.38% Pro $100k-$1M: 4.88% Pro $1M-$50M: 4.63% Pro $50M+: 4.38% Lite (all balances): 6.38% Source: www.interactivebrokers.com, retrieved 2026-10-25 |
Per-contract figures exclude regulatory pass-through fees. Estimate your yearly cost with the calculator. See full pages for Fidelity and Interactive Brokers.