Interest offers pay a yield on the uninvested cash in your account. Rates, caps, and whether the cash stays accessible vary, so read the conditions.
eToro
eToro pays up to 3.55% annual interest on the uninvested USD cash sitting in your trading account, accrued daily and paid monthly, with no lock-in.
Moomoo
New U.S. Moomoo customers can earn 8.1% APY on up to $20,000 of uninvested cash for the first 60 days, combining the 3.35% base Cash Sweep rate with a one-time 4.75% booster coupon.
RoboForex
RoboForex pays up to 10% per year on your trading account balance, credited monthly, with the rate set by how many lots of forex and metals you trade each month.