Cap One allows you to change your due date, but not your statement date.
I just recieved the e-mail with the statement for my Platinum card today, 11/21 with a due date of 12/16.
I get paid once a month at the beginning of the month. So if I wanted the statement date to fall around the 5th of the month so I can pay it down to 10% every month before the statement cuts. What would I select as a due date?
12/16 is 25 days after 11/21 so would it be safe to assume choosing a due date on the 30th would make my statement date fall around the 5th? Will the due date always be 25 days after the statement date?
Am I understanding this correctly or do I just sound like an idiot right now? 
@Anonymous wrote:Cap One allows you to change your due date, but not your statement date.
I just recieved the e-mail with the statement for my Platinum card today, 11/21 with a due date of 12/16.
I get paid once a month at the beginning of the month. So if I wanted the statement date to fall around the 5th of the month so I can pay it down to 10% every month before the statement cuts. What would I select as a due date?
12/16 is 25 days after 11/21 so would it be safe to assume choosing a due date on the 30th would make my statement date fall around the 5th? Will the due date always be 25 days after the statement date?
Am I understanding this correctly or do I just sound like an idiot right now?
This thread is nearly a year old, but I think I can help with your question because I had almost the same exact situation.
I also get paid at the beginning of the month, and for simplicity I had Capital One set my due date to the 15th of the month. You're right about not being able to specify a 'statement date', but by changing the due date the statement (closing) date gets changed as well. My own statement closing date is usually the 18th, with my payment being due the 15th of the following month.
I see what you're trying to do, but I feel you might be over-thinking it. Keep in mind that unless you're applying for a mortgage or buying a car, it's not a horrible thing to allow a balance to post, and it can even be helpful (especially if you're wanting to get a CLI from Capital One - I got my largest after allowing balances to post for several months, but YMMV). I understand not wanting a 'huge' balance to post, but if you have a few fast-food purchases that miss your own 'cut-off' and make the statment, that's nothing to be too worried about.
Personally, I like allowing some balances to post... I've always felt it keeps lenders from being too 'jumpy' on those occasions I do carry a balance for a few months.