An internal account is the reflection of a Group's standing during the fiscal year. The current state of an internal account can be found in your account printout. Committees only need to be aware of their internal accounts, as they're budget's come directly from the EUS Operating Budget.
Departments, clubs and design teams, however, have liability accounts. This is because their money carries over year to year. They're temporary financial status is recorded in the internal account, their longterm financial status is in their liability account.