What is "short sales proceeds" interest?

IBKR pays credit interest on positive settled cash balances and charges debit or margin interest on negative settled cash balances in securities accounts for each currency held. The interest rates and calculations depend on several factors:

Account Type and Net Asset Value (NAV):…

The Fee Rate represents the indicative rate (generally expressed as an interest rate) that the lender assesses to the borrower of the shares. This is the indicative borrow fee rate that clients will pay IBKR to short a stock. It is a debit from the account…

Generally, interest is charged and/or credited to the account in the currency of the respective cash balance.

Find out more on the interest and margin…

Clients can use the table from IBKR's website as a reference. The actual or expected total short stock balance can be entered here to determine what the blended SSPI rate received should be on settlement…