The QuickBooks Support Phone Number is This phone support for QuickBooks is available from 5:00 am PT to 5:00 pm PT, Monday through Friday. If your QuickBooks Subscription includes Premium Support, you can locate that number by logging in to your Quicken account. The phone number will be at the top of the QuickBooks account page. The premium support is accessible from 5:00 am PT to 5:00 pm PT, Monday through Friday.