Interactive Brokers Forex Review: Real Interbank Pricing, Real Learning Curve
We routed EUR/USD orders through IBKR's IdealPro venue, checked the commission against the $2-per-lot minimum, and tried to get comfortable in Trader Workstation before switching to the newer IBKR Desktop.
Best for: Cost-conscious traders who already know how to place orders and want interbank pricing
Interactive Brokers gives a retail account genuine interbank forex pricing, a $2 minimum commission on a standard lot and a hundred-plus pairs, but only once an order clears the 25,000-unit IdealPro threshold, and only once a trader has climbed Trader Workstation's learning curve or settled for the lighter IBKR Desktop. It suits a trader who already knows what a limit order and a basis point are; it is a poor first forex account.
Price $0 account minimumMaker Interactive Brokers LLCinteractivebrokers.com
Most US forex accounts trade against a single broker's dealing desk. Interactive Brokers routes retail spot forex orders onto IdealPro, the same electronic venue its institutional desks use, and prices the fill against quotes from 17 FX dealers rather than one. We opened an account, funded it, and worked out what that actually costs and demands.
The 25,000-unit line that decides your spread
IdealPro pricing only applies once an order reaches 25,000 units of the base currency, a full mini lot and a quarter of a standard one. Fall under it and IBKR still fills the order, just routed off IdealPro at a spread widened by roughly 1 to 3 pips depending on the pair. A trader placing 10,000-unit clips to manage risk on a small account never sees the pricing IBKR advertises; a trader running standard or larger lots does, every time.
That threshold is the single fact that decides whether this broker is cheap for you. We ran a full 100,000-unit EUR/USD lot through IdealPro and it filled at the quoted interbank spread with no markup beyond commission.
What a lot actually costs
Commission on Tier I, which covers essentially every retail account, is 0.20 basis points of trade value with a $2 minimum per order. On a 100,000-unit EUR/USD lot near 1.09, that math works out under $2.20, so the $2 floor is what most traders pay. Run ten lots in a session and commission alone stays close to $20 to $22, before whatever the interbank spread itself costs. IBKR publishes the full tiered schedule, including the volume breakpoints where the per-order minimum drops toward $1 for firms clearing over $5 billion a month, numbers no retail account will ever reach but worth knowing exist.
Set against a typical raw-spread MetaTrader account charging $3 to $3.50 per lot per side plus a wider raw spread, IBKR's all-in cost on a standard lot usually comes out lower. It is not a promotional rate. It is what the venue charges every account at that volume tier, which is the point: nothing here is negotiable or tiered by how much you deposit up front.
