Originally Posted by Critterlynn

You're over thinking this. If he does nothing, he will have a statement closing on Dec 15. If he has it changed and the next one closes on Jan 2nd, he will extend his statement by about 2 weeks. He will still have a payment in December based on his November statement.

Anytime I've changed a payment due / statement end date, it has extended my current billing cycle. Not saying it can't shorten it, but I've never had it happen.

As far as the extended intrest free period, it would only last one billing cycle anyway. After that, ts business as usual.