Residual cash balances in non-base currencies will be converted automatically to the base currency of the account after 2 business days at no cost to clients. Nominal FX balances are defined as those less than 5.00 USD or the equivalent. Such residual non-base balances are regularly swept the night after settlement. Usually the cash settles T+2 trade date plus 2 business days after a FX conversion trade or after a closing stock trade. A non-base residual cash less than 5.00 USD will be swept into the account's Base Currency as long as no other unsettled activity remains like an accrued interest payable or receivable in that currency. Note that balances which are accrued but not yet posted, such as interest debits and credits, are not subject to being swept while in an accrual state but can be swept back to the Base Currency the day after being posted to the account's cash balance.
Additional Information
- How can I close a nominal Forex balance in my account? in the IBKR Knowledge Base.