My recommendation:
Since this change is to the customer's benefit, notice is required 30 days after the change is effective. If you plan to convert on July 1st, then you could send notice via your statement message between 7/1/25 - 7/30/25 and still be in compliance. For new accounts opened in June, you provide the current notice as they will receive the revisions on their July statement. That eliminates the "two sets of T&C's in play."
You are expediting the availability of funds. More funds are being made available sooner since the thresholds are going up.
Notices made in August would be more than 30 days from the effective date and would be late.
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