Idle cash interest is calculated daily using the following formula:
Daily idle cash interest = Idle cash balance * (APR/360)
Idle cash interest takes into consideration on two main factors: days since enrollment and idle cash balance. Idle cash balance is defined as the end-of-day settled cash balance in an account.
Please see the table below for more details:
Days Since Enrollment | End-of-Day Settled Cash Balance | Annual Percentage Rate (APR) | Annual Percentage Yield (APY) |
1-15 | Any Amount | 0.10% | 0.10% |
16-105 | Any Amount | 3.11% | 3.15% |
≥106 | >$1.5M >$100k, ≤$1.5M >$50k, ≤$100k >$10k, ≤$50k ≤$10k | 3.10% 2.52% 1.07% 0.34% 0.10% | 3.14% 2.55% 1.08% 0.34% 0.10% |
Accounts with an active margin loan do not have an idle cash balance for that day. Instant funding is not included in an account's idle cash balance.
Rates are effective starting December 12, 2025. Please note that these rates are subject to change without prior notice.
Still got questions? Contact TradeUP Customer Support by email at support@tradeup.com or reach out to us on Live Chat!