To contact QuickBooks help desk, you can reach them at 1-844-476-5438.QuickBooks Help Desk 1-844-476-5438 is a helpful and unique hotline number to resolve any query about QuickBooks Desktop Pro, Premier, and Plus.The QuickBooks Online Plus, Essentials, and Simple Start versions have working hours from 6 AM to 6 PM PT, Monday via Friday, and from 6 AM to 3 PM PT on Saturday