Settings > Settings Window - Company > Settings Window - Company > System > Change Your Cash Accounting Date
                                
                                Change Your Cash Accounting Date
To change the date on which you start using cash basis accounting:
- In the Home window on the Setup menu, choose Settings.
 - On the left side of the window, click Company and then System.
 - In the Cash-Basis 
 Accounting section, click 
 and select a new Cash Accounting Date from the calendar. - Click OK.