An account will be subject to interest charges despite maintaining an overall net long or credit cash balance under the following circumstances: 

1. The account maintains a short or debit balance in a given currency.

For example, an account maintaining a net cash credit balance equivalent to USD 5,000 comprised of a long USD balance of 8,000 and a short EUR balance equivalent to USD 3,000 would be subject to an interest debit based upon the short EUR balance.  There would be no offsetting credit on the long USD balance as it is less than the USD 10,000 Tier I level above which interest is earned.  

Account holders should note that in the event they purchase a security which is denominated in a currency that they do not hold in their account, IBKR will create a loan in that currency in order to settle the trade with the clearinghouse. If one wishes to avoid such loans and their associated interest charges, they would need to either deposit funds denominated in that particular currency or convert existing cash balances via the Ideal Pro (for balances of USD 25,000 or above) or odd lot (for balances less than USD 25,000) venue prior to entering into your trade. 

2. The credit balance is comprised  principally of proceeds from the short sale of securities. 

For example, an account maintaining a net cash credit balance of USD 12,000 which is comprised of a USD debit of 6,000 in the security sub-account (less the market value of any short stock positions) and a short stock market value credit of USD 18,000 would be charged interest on the Tier 1 debit of USD 6,000 and would earn no interest on the short stock credit as it falls below the USD 100,000 Tier I level.

3. The credit balance includes unsettled funds.

IBKR determines interest debits and credits solely based upon settled funds. Just as an account holder is not assessed interest charges on funds borrowed to purchase a security until such time that purchase transaction settles, the account holder will not receive an interest credit, or offset against a debit balance, on funds originating from the sale of a security until such time the transaction has settled (and IBKR has been credited funds by the clearinghouse).

Individuals who purchase or redeem mutual fund shares receive the next computed share price following the fund's receipt of the transaction order. Mutual fund orders are accumulated during the day and are transmitted to the fund at 15:59 for pricing. Once the fund determines its net asset value as of the close, this price will be posted to your Daily Activity Statement and to the TWS.

For regulatory purposes IBKR is required to segregate the securities assets within your account from the commodities assets.  Those commodities assets may include the market value of options on futures positions plus any cash required as margin as a result of commodities futures and options on futures positions.  Periodically, the margin requirement on your commodities positions will be recomputed and should this requirement decline, cash in excess of that required as commodities margin will be transferred from the commodities side of your account to the securities side.  Likewise, should the commodities margin requirement increase, IBKR will transfer any available cash from the securities side to the commodities side.  As SIPC insurance is provided to assets on the securities side of your account but not the commodities, this periodic transfer is performed to ensure that your cash balance is afford the greatest protection possible. It should be noted that these cash movements represent journal entries within your account which serve to fully offset each other and therefore have no impact upon the aggregate cash balance within your account (see the Total column within the Cash Report section of the Activity Statement).

In order for an employer to be set up so as to received this information, you will need to have them prepare and email to newaccounts@interactivebrokers.com a Rule 407 letter which confirms your employment and which serves as their request to receive duplicate statements and trade confirms. Assuming that your employer is a financial institution which, for in-house compliance purposes and/or as a result of regulatory mandate monitors the trading activities of their employees, they should be familiar with the preparation and contents of this letter. 

You may also want to first verify with your employer whether they are a participant in the IBEmployeeTrack^SM program which automatically identifies new IB accounts opened by employees and organizes into a single daily transmission the reports required for all.

Note that once established, this reporting cannot be terminated without confirmation from the employer that the delivery of statements and confirms is no longer required.

NOTE:

If this request is being driven by a change in the account holder's employment, the account holder should update their employment information within Account Management. In addition, if the account holder selects the Applicant Information and then Regulatory Information menu options within Account Management they will be presented with the following question:

Is the account holder or any immediate family member who resides in the same household, registered as a broker-dealer or an employee, director or owner of a securities or commodities brokerage firm?

Answering 'Yes' to that question will prompt a series of questions and generate a sample Rule 407 letter.