To specify the default tax rate and deposit rate in EasyBilling, follow these steps:

1. Go to the “Customize Document” menu and select “Preferences”.
2. The “Preferences” dialog box will be displayed.
3. Within this dialog box, navigate to either the “Tax Rate/Calculation” or “Deposit” tab to access the settings for the respective rates.
   
4. Set the desired default tax rate and deposit rate according to your requirements.