The general rule is that the credit union must credit a payment to a member’s account as of the date of receipt. The credit union can set reasonable requirements for making payments.
Reasonable requirements include:
• requiring that the account number or payment stub be provided with the payment,
• specifying that only checks or money orders be sent by mail,
• specifying that payment is to be made in US Dollars,
• setting reasonable cut off times for payments received by mail, by electronic means, by telephone, and in person. The cut-off time must be 5 p.m. or later, except for in-person payments at branches that close prior to 5 p.m.
If the lender specified reasonable requirements on the billing statement, but accepts a payment that does not conform to those requirements, the lender must credit the payment within five days of receipt.
In general, payments made at a creditor’s Website prior to the specified cut-off time would be considered timely.
You should review your statement and the credit card account agreement to determine the credit union's policies or contact the credit union for an explanation.