Error! You must have javascript enabled to use this form. Please enable Javascript in your browser. Super Functional, Super Optimal QuickBooks Files QuickBooks has not laid down a solid definition for a large file. However, there is a point when a file does get too big causing slowdowns to occur. View full press release Your Name: Your Email: To Email: To BCC: Subject: Comments: We respects your privacy, the information you entered above will not be used to send unsolicited email, and will not be rented or sold to a 3rd party. Your contact information will be shared with the recipient of this message - Privacy Policy Send