Account holders can designate a billing account from which all market data fees will be deducted. We recommend that you select the account that generates the greatest level of commission activity if your subscription provides for fee waiver and should your monthly commissions reach a minimum threshold (e.g., U.S. Securities & Commodities Market Data Bundle). IBKR will only look to the activity conducted in the billing account to determine waiver eligibility rather than aggregating the commission activity across all linked accounts.
In selecting the billing account, consideration should also be given to selecting the account with the highest level of equity as well as cash. This will minimize situations where the account has insufficient cash and the billing serves to increase the margin debit balance or where the account does not have margin permissions or maintains insufficient equity with loan value which, in both cases, will result in the liquidation of positions to cover the fees. IBKR will not act to automatically transfer cash across linked accounts to meet subscription obligations.