Brokerage investment savings accounts | Page 48 | General comparisons | Discussion forum

In reality, MMF and ISA funds are assumed to be available by the brokerage for purchase of other products such as equities, just like Cash ETFs
IF the order to sell the ISA or MMF is done before mutual fund cut off time which is typically in the order of 2pm Eastern, or perhaps a bit later with some brokerages.

I seem to recall brokerages, TDDI in particular, identified the potential problem and made the in-house TD ISA cutoff closer to 4pm. A few others IIRC have indicated 'best efforts' to make ISA funds available even if the ~2pm cutoff was missed.

Mordko is correct in saying that would not be an issue with margin accounts. At most, a day's interest might be payable.

That all said, it is a potential glitch with ISAs and MMFs that does not exist with Cash ETFs.