If you want to see an account's future charges & payments, you can view a simulated ledger from the billing simulation report.
Click Business Tools > Billing Manager from the left navigation menu.
Locate and click the account name you would like to view.
You can use the search function or click Customize Filter to narrow the search.
To the right of the account name, click the settings icon > Simulate Billing.
Click the calendar icon and select the desired simulation date.
Click Start Simulation.
The Simulated Ledger appears for the selected individual.