What is the cut-off time, and why is it important?
The cut-off time is the point at which all the money added and withdrawn in Flexible Accounts are collated and sent to the fund manager to buy or sell shares in the respective Money Market Funds. Your money needs to reach the fund manager before you can start earning interest on the Flexible Account.
The cut-off time for all Flexible Accounts is 5am UTC. In other words, any orders you make before 5am UTC on a business day will be sent to the fund manager on the same day, and you'll begin earning interest on the fund from the next day. Orders made after 5am UTC will be sent to Fidelity on the next business day, and you'll start earning interest a day after that.