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):
- Accounts with a NAV of USD 100,000 or more receive interest at the full eligible rate.
- Accounts with NAV less than USD 100,000 receive interest at rates proportional to the account size.
- For example, an account with a NAV of USD 50,000 earns credit interest at a rate equal to one-half the rate paid to accounts with a NAV of USD 100,000 or more.
Currency and Balance Amount:
- Interest rates vary by currency and balance amount.
- No interest is paid on the first USD 10,000 (or equivalent) of cash.
- For the most up-to-date and detailed information on current interest rates, tiers, and calculations, visit the IBKR Pricing Interest Rates page.
Calculation and Posting:
- Interest is calculated using a blended rate based on tiers.
- Interest accrues daily based on end-of-day settled cash balances.
- Daily interest accruals are posted to the account on the third business day of the following month.
- If the accrued interest is less than $1.00 (or the minimum unit for the currency type held), it will accumulate with subsequent accruals and be posted to the account once it reaches $1.00.
- The rates that are listed are an annual rate. When calculating daily interest, the "Number Of Days In Year" are based on industry standards for money market activity.
- 365: AUD, CAD, CNH/CNY, GBP, HKD, KRW, ILS, INR, NZD, SGD
- 360: USD, EUR, CHF, CZK, JPY, SEK, NOK, DKK, HUF, MXN
- 365: USD cash balances held in the Insured Bank Deposit Sweep Program
Account Segments:
- Interest is earned on positive settled cash balances in the securities segment of an account.
- Interest is not paid on cash held in the commodities segment of an account.
Additional Information