Opening
You trade or plan to trade through Interactive Brokers. You need clear, actionable fee breakdowns. This guide targets retail and professional traders who want to compare true trading cost. Save time. Avoid surprises on monthly statements.
Check this guide if you want:
– A short TL;DR for quick decisions.
– A detailed breakdown of pricing components with real numbers.
– Example trades that show how fees add up.
– A decision tree to choose the right plan.
This article solves three things. First, it explains IBKR Lite and IBKR Pro pricing. Second, it shows how exchange, regulatory, and margin fees change totals. Third, it gives specific steps to cut costs on common trades. Expect a TL;DR, a pricing deep dive, a compact comparison table, four real cost scenarios, and practical cost-saving tactics.
Read with a notepad. Compare numbers to your own trade sizes and frequency. Use the examples to calculate your expected monthly cost.
Quick Answer / TL;DR
If you want the lowest visible commission on US stocks, use IBKR Lite. Many US stock and ETF trades show $0 commission.
If you want volume discounts and routing control, choose IBKR Pro Tiered. Expect per-share fees plus exchange pass-throughs.
If you want predictable per-trade cost, pick IBKR Pro Fixed. Example: option contracts often charge $0.65 per contract under fixed pricing.
To minimize cost on small orders, avoid venues with high pass-throughs. Use limit orders. Watch per-contract and regulatory fees that add $0.01–$0.50 per trade.
Pricing Plans — 2 main options
Interactive Brokers offers two broad pricing families. Each fits a distinct trader profile. Compare features, raw fees, and routing behavior.
IBKR Lite
– Many US-listed stocks and ETFs trade at $0 commission for eligible equity trades.
– You still get IB’s trading platform and smart routing.
– Use Lite if you make small, infrequent buy-and-hold trades.
– Expect $0 commission on many US equity trades; expect occasional pass-through regulatory charges.
IBKR Pro
– Pro divides into Fixed and Tiered pricing.
– Fixed gives predictable per-trade or per-share fees. Example: options fixed pricing often $0.65 per contract. Example: a per-share option like $0.005/share with a $1 trade minimum is typical in some markets.
– Tiered charges per-share rates that fall with volume, and it passes exchange and clearing fees. Example: per-share rates can be as low as $0.0005 per share plus exchange fees of $0.0002–$0.002 per share.
– Tiered is best if you trade high volume or need low variable cost. Fixed is best if you want a stable per-trade expense.
Best for:
Retail buy-and-hold traders: Lite. Volume traders and pros: Pro Tiered. Predictable-cost traders: Pro Fixed.
Skip if:
Skip Lite if you need advanced routing or market maker rebates. Skip Pro Fixed if you need lowest marginal per-share pricing at scale.
Key differences to track:
– Execution and routing quality vary by plan.
– Tiered passes fees through; Fixed bundles some costs into flat fees.
– Nation-specific availability and account type restrictions apply.
– Expect per-share rates from $0.0005 to $0.005 in Tiered vs $0–$1 visible commission in Lite/Fixed contexts.
Watch out for: account eligibility rules and geographic restrictions that can block Lite access for non-US residents.
Per-share and Per-contract Fees — 3 key figures
Define the basics. Per-share fees apply to stocks and ETFs. Per-contract fees apply to options and futures. One options contract typically controls 100 shares. Use that to convert contract fees to per-share equivalents.
Concrete rate examples:
– IBKR Lite US stocks: $0 per eligible share trade.
– Pro Fixed stock example: $0.005 per share with a $1 trade minimum (so a 100-share trade costs $1 min instead of $0.50).
– Pro Tiered stock example: $0.0005 per share base rate on large volume, plus exchange fees of $0.0002 per share.
Options examples:
– Fixed options example: $0.65 per contract. A single contract equals 100 shares of underlying exposure.
– Tiered options low-end: $0.15 per contract for very high volume clients.
– Typical mid-volume option rate in Tiered: $0.35–$0.70 per contract depending on venue and volume.
Math examples:
– 100 shares of a $50 stock under Lite: 100 × $0 = $0 commission.
– Same trade under Pro Fixed: 100 × $0.005 = $0.50, but subject to $1 trade minimum, so you pay $1.00.
– Same trade under Pro Tiered: 100 × $0.0005 = $0.05, plus exchange fees of $0.02–$0.20, total ≈ $0.07–$0.25.
Options math:
– Buy 2 call contracts under Fixed: 2 × $0.65 = $1.30 commission.
– Buy 2 calls under Tiered: 2 × $0.15 = $0.30, plus exchange/regulatory fees ≈ $0.02–$0.10.
Key points:
– Per-share rate example: $0.0005, $0.005, $0.00.
– Per-contract example: $0.15, $0.35, $0.65.
– Minimums example: $1 per trade minimum can apply.
– Conversion: 1 options contract = 100 shares for math.
– Rounding and increments can affect totals by $0.01–$0.10 per trade.
Watch out for: per-trade minimums, rounding to nearest cent, and per-contract clearing passes that appear after execution.
Exchange and Regulatory Fees — 2 numbers to know
Pass-through fees are imposed by exchanges and regulators. The broker collects and forwards them. They look small per share but add to totals on large or frequent trades.
Two concrete regulatory numbers:
– SEC sale fee example: $22.10 per $1,000,000 of sale proceeds (works out to $0.0000221 per $1 of sale).
– Tape or clearing fees commonly range from $0.0001 to $0.003 per share depending on venue.
Examples of impact:
– A $100,000 sell may carry an SEC fee around $2.21 and exchange/router fees that total $10–$50 depending on routing choices. Total example: $12–$52 on $100,000 of proceeds.
– A $1,000,000 sale may show an SEC fee near $22.10 with exchange fees adding $30–$300.
Pass-through vs bundled:
– Tiered pricing passes exchange and clearing fees through to you. Expect separate line items.
– Fixed pricing often bundles some fees into the flat commission. Bundling hides the split but can be higher or lower overall.
Typical pass-through items (with two example numbers each):
– SEC sale fee: about $22.10 per $1,000,000; effectively $0.0000221 per $1.
– Exchange routing/tape fees: $0.0001–$0.003 per share depending on maker/taker status and venue.
Watch out for: odd-lot trades, OTC trades, and special venue routing. These can use different fee schedules and may add $0.01–$0.50 per trade.
Margin Interest and Financing — 3 concrete numbers
Margin interest is the cost to borrow cash to trade. IB calculates interest daily and bills monthly. Rates vary by borrowed amount and benchmark.
Rate bands and examples:
– Low-borrow band: expect 1.00%–3.00% for very large balances.
– Mid-borrow band: expect 3.00%–6.00% for moderate balances.
– Higher band: retail small borrows may pay 6.00%–9.00% depending on base rate and spread.
Concrete example calculations:
– Borrow $50,000 at 4.00% annual = $2,000 interest per year. That is about $166.67 per month.
– Borrow $500,000 at 2.00% annual = $10,000 interest per year. That is about $833.33 per month.
– Borrow $5,000 at 6.00% annual = $300 interest per year or $25 per month.
How IB calculates interest:
– Interest accrues daily on the outstanding principal.
– Interest compounds monthly and is billed monthly.
– Use the annual rate divided by 360 or 365 per IB’s calculation method for daily accrual (verify exact day count on statements).
Other margin forms:
– FX margin rates differ and can be wider by 1.00–3.00 percentage points versus equity margin.
– Portfolio margin may lower effective borrowing cost but often requires $100,000 minimum equity or similar threshold.
Watch out for: promotional or tiered discounts usually apply only above certain equity balances. Check your tier to see if your borrow level triggers a lower rate.
Non-trading Fees and Minimums — 2 concrete numbers
Non-trading fees can surprise you if you ignore them. These include wires, withdrawals, market data subscriptions, account maintenance, and inactivity charges.
Concrete examples:
– Wire out fee: $8–$20 per transfer depending on currency and destination.
– Market data: $1–$40 per exchange per month for real-time feeds. Consolidated packages can be $20–$50 per month.
Minimums and thresholds:
– Some accounts have inactivity or low-balance minimums of $0–$10 per month depending on plan and jurisdiction.
– Feature unlock thresholds: $25,000 or $100,000 equity often unlock margin, day trading buying power, or portfolio margin.
Ways to avoid or reduce fees:
– Use ACH transfers instead of wires to avoid $8–$20 wire fees.
– Share market data across a single user to avoid multiple $20–$50 monthly fees.
– Maintain minimum balances to sidestep inactivity charges of $0–$10 per month.
Watch out for: market data is billed per user per exchange. If you need multiple exchanges, expect an extra $20–$50 per month for each additional exchange’s real-time feed.
Example Cost Scenarios — 4 scenarios with numbers
See exact math to compare plans on typical trades. Each scenario shows line-item math and a short takeaway.
1) Small retail buy
– Trade: Buy 100 shares at $30 using IBKR Lite.
– Math: 100 × $30 = $3,000 notional. Commission = 100 × $0 = $0. Regulatory pass-through ≈ $0.00–$0.10.
– Total ≈ $0.00–$0.10.
– Takeaway: Best for buy-and-hold retail. Low visible cost.
2) Active trader, mid-size volume
– Trade: Buy 10,000 shares at $5 under Pro Tiered at $0.0005 per share.
– Math: Commission = 10,000 × $0.0005 = $5.00. Exchange fees ≈ $2.00. SEC/regulatory ≈ $0.22.
– Total ≈ $7.22.
– Takeaway: Tiered favors volume. Very low per-share cost.
3) Options spread under Fixed pricing
– Trade: Two-legged spread, 4 contracts per leg = 8 contracts, Fixed $0.65/contract.
– Math: Commission = 8 × $0.65 = $5.20. Exchange/reg fees ≈ $0.10.
– Total ≈ $5.30.
– Takeaway: Fixed is predictable for multi-leg options.
4) Leveraged position using margin
– Trade: Borrow $50,000 margin at 4.0% annual.
– Math: Interest = $50,000 × 4.0% = $2,000 per year = $166.67 per month.
– Takeaway: Financing costs can dwarf per-trade fees for leveraged strategies.
Pitfall example:
– A small order may hit a $1 trade minimum on Fixed pricing. That can make Lite cheaper even if per-share rates look lower. Always check minimums and routing details.
Comparison Table
Quick comparison of the common IB pricing paths and how they stack on core metrics.
| Plan / Metric | Commission (US stocks) | Options per contract | Typical minimum | Best for |
|---|---|---|---|---|
| IBKR Lite | $0 | Varies (example $0.65 fixed) | $0 | Buy-and-hold retail |
| IBKR Pro — Fixed | Flat per trade or per-share (example $0.005/share or $1 min) | $0.65/contract | $1 trade min (example) | Predictable per-trade cost |
| IBKR Pro — Tiered | Per-share (example $0.0005–$0.0035) + exchange fees | $0.15–$0.70 (volume dependent) | Varies by market | High-volume traders |
| Typical other broker | $0–$5 per trade | $0.50–$1.00 | Varies | Casual traders |
Tiered favors volume. Fixed favors predictability. Lite favors small, fee-sensitive equity traders.
Pitfalls and Cost-saving Strategies — 3 tactics with numbers
Avoid common traps. Use three concrete tactics with numbers to lower your cost.
Tactic 1 — Consolidate market data
– Problem: You pay $20–$50 per exchange for real-time data.
– Action: Subscribe only to needed exchanges. Use delayed data for others.
– Savings: Dropping one $25 subscription saves $300 per year.
Tactic 2 — Use limit orders and avoid last-look routing
– Problem: Marketable orders can route to venues with $0.0005–$0.003 per share fees.
– Action: Use limit orders to capture maker rebates or avoid taker fees.
– Savings: On a 10,000-share trade, saving $0.001 per share saves $10.
Tactic 3 — Match plan to volume
– Problem: Per-trade minimums of $1–$5 wipe out savings on small trades.
– Action: Use Lite for small, infrequent trades and Tiered for large-volume trades.
– Savings: On 100-share trades, Lite often saves $1 per trade versus a $1 minimum Fixed fee.
Additional pitfalls with numbers:
– Small orders can trigger $1–$5 minimums.
– Exchange/regulatory pass-throughs can add $0.01–$0.50 per trade.
– Wires cost $8–$20 each if you withdraw cash frequently.
Practical checklist:
– Compare per-share vs per-contract rates for your average trade size.
– Estimate monthly flow (shares and contracts) and multiply by per-unit fees.
– Add projected exchange fees: $0.0001–$0.003 per share.
– Add expected SEC/regulatory: roughly $22.10 per $1,000,000 sale proceeds.
Watch out for: hidden routing decisions and venue-specific fees that appear after execution. Test a few small trades and check line-item charges on your next statement.
Closing
You now have a practical map of Interactive Brokers commissions. Use the TL;DR to pick a starting plan. Run your own math with the examples: 100-share, 10,000-share, options spreads, and margin cases. Count per-share rates, per-contract rates, exchange pass-throughs, and margin interest.
Check platform settings for routing preferences. Test trades in small size to see real routing outcomes and fees. Recalculate after adding market data and wire habits. Compare total monthly cost across plans, not just headline commissions.
Decide by numbers. Prefer Lite for many small equity trades. Choose Pro Tiered for high volume and lowest marginal cost. Pick Pro Fixed when you want fee predictability. Keep at least $25,000–$100,000 in mind for advanced features that require minimum equity. Adjust frequently as your trade profile changes.
Track your statements monthly. Re-optimize your plan if fees exceed your trading profit by more than expected. Use the examples in this guide to estimate annual trading cost quickly.