Future transactions are tracked via the Accounts Payable and Accounts Receivable features. If you receive a bill and would like to enter it into Accounted before you actually pay it, you would enter it as a "Payable Bill." If you send out an invoice or are owed money, you would enter it as a "Receivable Payment." These can be created using the menu options in the Company menu, or via the Toolbar buttons.

Once a payable bill or receivable payment is created, you will be able to view it in the appropriate account. When you actually pay a bill or receive a payment, you can use the appropriate menu item in the Company menu, or press the "Receive Payments" or "Pay Bills" toolbar icon. This will bring up a list of appropriate items, and allow you to pay or receive the items with any of your bank accounts.

Accounts Payable / Receivable can be turned on and off in the Company Settings Window > Company Information section.